最新刊期
卷 ， 期 3 ， 2013
- 摘要：Two kinds of coumarin substituted diacetylene monomers,named as CODA and CO2DA,were designed and synthesized.The effect of the flexible spacer on their interfacial behavior,photo-polymerization of their resulting LB films and the chirality formation of polydiacetylene (PDA) backbone was investigated and discussed in detail.LB films of coumarin substituted diacetylene monomer could be prepared at 35 mN/m on water subphase through LB technique.Although the above CODA monomers were achiral,the CODA LB films exhibited obvious CD signal,which should be ascribed to the overcrowded packing of coumarin units upon compression.As for CO2DA sample,no obvious CD signal could be observed.Strong collective noncovalent interaction (- stacking) was believed to be responsible for the formation of the chiral supramolecular assemblies.When exposed to UV irradiation with 254 nm light,LB films derived from CODA could be polymerized into blue phase and yield obvious chirality for PDA chain although CODA monomer was achiral.However,no obvious CD signal could be observed for the films derived from CO2DA PDA backbone.It was demonstrated that the intermolecular irregular arrangement of the coumarin groups in the LB films was not favorable for the topo-polymerization and chirality formation of PDA backbone.关键词：Flexible spacer;Coumarin;Polydiacetylene;LB films;Supramolecular chirality
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发布时间：2021-03-19 - 摘要：Optically active poly(meth)acrylamides were synthesized by the stereospecific radical polymerization of (S)-N-(2-hydroxy-1-phenylethyl)methacrylamide ((S)-HPEMA) and (S)-N-(2-hydroxy-1-phenylethyl)acrylamide ((S)-HPEA) in the absence and presence of Lewis acid ytterbium trifluoromethanesulfonate (Yb(OTf)3).The effect of the Lewis acid on the radical polymerization of (S)-HPEMA and (S)-HPEA was investigated.In the presence of a catalytic amount of the Lewis acid,the isotactic specificity of the polymers remarkably increased when the radical polymerization proceeded in methanol and n-butanol. However,the isotactic selectivity disappeared when the radical polymerization proceeded in DMSO.The interaction between the Lewis acid and monomers (S)-HPEMA and (S)-HPEA was investigated by 1H-NMR.It was found that the monomers strongly interacted with the Lewis acid in methanol-d4,which included the coordination of the amide group to the rare earth metal ion and the hydrogen bond between the hydroxyl group of the monomers and the trifluoromethanesulfonate ion of the Lewis acid.The plausible mechanism of stereocontrol in the radical polymerization of (S)-HPEMA and (S)-HPEA was analyzed.The monomers are activated by the interaction with the Lewis acid,and the activated monomer is preferentially polymerized.Therefore,the Lewis acid is incorporated into the propagating chain end.The Lewis acid could interact with two or more structural units,because of its high coordination numbers and more than one triflate ions,and control the stereochemistry of the polymerization to an isotactic-selective manner.The Lewis acid might weakly interact with the polymer chain to be readily transferred to another monomer and activate it.关键词：Stereospecific polymerization;Optically active polymer;Methacrylamide;Tacticity;Stereoregularity
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发布时间：2021-03-19 - 摘要：Six new polysaccharide carbamate derivatives,［6-cyclohexyl-2,3-bis(3,5-dimethylphenyl)］- carbamate,［6-cyclohexyl-2,3-bis(3,5-dichlorophenyl)］carbamate and ［6-cyclohexyl-2,3-bis(4- chlorophenyl)］carbamate of cellulose and amylose,were synthesized by a sequential regioselective process based on the protection and deprotection of 6-position of a glucose unit.These derivatives were then used as the chiral stationary phases (CSPs) for high-performance liquid chromatography (HPLC) after being coated on the surface of aminopropyl silica gel.The structures of the obtained derivatives were characterized by 1H-NMR and FTIR spectroscopies,and their chiral recognition abilities were evaluated using nine racemates by HPLC.Some racemates were better resolved on the new derivatives,compared with the well-known monosubstituted and disubstituted phenylcarbamate derivatives,such as tris(3,5-dimethylphenylcarbamate),tris(3,5-dichlorophenylcarbamate),tris(4-chlorophenylcarbamate) and tris(cyclohexylcarbamate) of the cellulose and amylose with high chiral recognition ability.The higher order structure of the new derivatives seems to be changed through the selective introduction of a cyclohexyl group onto the 6-position of the glucose unit,which must influence the chiral recognition ability of the new derivatives.The obtained results indicate that three novel cellulose derivatives show higher chiral recognition ability than three amylose derivatives for most of the racemates in the study.And the property and position of substituents at 2-,3- and 6-position of glucose unit have a great influence on the chiral recognition ability of cellulose and amylose carbamate derivatives.关键词：Cellulose;Amylose;Phenylcarbamate;Chiral stationary phases (CSPs);Chiral recognition;Carbamate;HPLC
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发布时间：2021-03-19 - 摘要：Polyaniline-(enzyme-hydrolyzed lignin)(PANI-Lignin) nanocomposites were prepared via an in situ polymerization from aniline by using enzyme-hydrolyzed lignin (EHL) as a dispersant.The EHL content ranging from 0 to 30 wt% was used to optimize the structure and properties of the PANI-Lignin nanocomposites.The PANI-Lignin nanocomposites were characterized by using FTIR,UV-Vis spectra,field emission scanning electron microscopy (FE-SEM),transmission electron microscopy (TEM),thermogravimetric analysis (TGA) and wide angle X-ray diffraction.Meanwhile,the silver ions adsorbability of the PANI-Lignin nanocomposites was examined by a static sorption technique.It was found that the EHL content affected greatly on the structure and properties of the PANI-Lignin nanocomposites.The typical FE-SEM and TEM images of the PANI-Lignin nanocomposite with the EHL content of 10 wt% showed that nanoparticles with an average diameter of 70 nm were obtained.The adsorption capacity of silver ions onto the PANI-Lignin nanocomposites with the EHL content of 0 wt%~30 wt% increased first,and then decreased.The maximal adsorption capacity was up to 565.4 mg/g for the PANI-Lignin nanocomposite with the EHL content of 10 wt% and the initial silver ions concentration of 0.05 mol/L.The product of PANI-Lignin composite with the EHL content of 10 wt% after adsorption was investigated by transmission electron microscopy and wide angle X-ray diffraction.The results showed that silver nanobelts with length up to 1 cm,width of 0.220~4.38 m and thickness of 219~311 nm were achieved after adsorption of silver ions onto the PANI-Lignin nanocomposite with the EHL content of 10 wt%.This result indicates that the PANI-Lignin nanocomposite possesses a strongly reactive adsorbability of silver ions.Therefore,the successful preparation of the PANI-Lignin nanocomposites can provide an effective method to the removal and recovery of silver ions from wastewater.关键词：Polyaniline;Enzyme-hydrolyzed lignin;Nanocomposite;Silver-ion absorbent
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发布时间：2021-03-19 - 摘要：Functionalized graphene (FG) was firstly synthesized by reacting graphene oxide (GO) nanosheets with vinyl trimethoxy silane (A-171) and simultaneously reducing by dimethylhydrazine in dimethylformamide (DMF) solvent.Investigation results confirmed that the A-171 molecules were attached on the surface of FG sheets by SiOC,meanwhile most of residual oxygen-containing functional groups of GO were reduced and the sp2-hybridized structure of graphene was restored.The introduction of A-171 molecules led to an excellent dispersibility and completely exfoliation of FG with a thickness of about 0.9 nm in the tetrahydrofuran (THF) solvent.Subsequently,FG/silicone composites were prepared via solution blending method.Finally,X-ray diffraction,scanning electron microcopy,dynamic mechanical analysis,thermogravmetric analysis and tensile test were performed to measure the morphology and properties of the FG/silicone composites.Results showed that compared with untreated graphene,FG had a better dispersion in the composites,as well as a stronger interfacial adhesion with silicone matrix.The tensile strength of the composites increased with increasing FG content.When the content of FG reached 0.5 wt%,the composite showed a tensile strength of 4.73 MPa,which is 87.7% higher than that of neat silicone.The 5% weight loss temperature and the glass transition temperature of the composite exhibited a 20.1 K and 23.9 K increase by addition of 0.5 wt% FG.关键词：Functionalized graphene;Silicone;Composites;Tensile strength;Thermal stability
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发布时间：2021-03-19 - 摘要：With tetrahydrofuran or cyclohexanone as dissolvent,Friedel-Crafts reaction grafting of polyvinyl chloride and polystyrene was realized through microwave irradiation.Graft of PVC-g-PS was successfully prepared.Influence of heating method,reaction temperature,type and mass fraction of catalyst on grafting reaction and grafting ratio was investigated.Graft structure of PVC-g-PS was characterized through FTIR,the mechanism and features were discussed.Results showed that Friedel-Crafts reaction grafting of polyvinyl chloride and polystyrene can carry out through heating by oil bath or microwave irradiation.Under heating with oil bath the graft of PVC-g-PS occurs at the meta position of the benzene ring,and the graft ratio is only 0.27%; while in the case of microwave irradiation,the graft of PVC-g-PS occurs at ortho-para positions of the benzene ring,and the graft ratio reaches up to 23%.Anhydrous AlCl3,FeCl3 or SnCl4 can all catalyze Friedel-Crafts reaction grafting of polyvinyl chloride and polystyrene,but the best catalytic activity is observed for anhydrous AlCl3.When the mass fraction of anhydrous AlCl3 is 3%,the highest graft ratio reaches up to 29%,but when mass fraction of anhydrous AlCl3 is over 3%,the graft ratio declines,PVC begins degradation and produces olefinic bonds.Research results demonstrate that microwave irradiation is an effective way of realizing Friedel-Crafts reaction grafting of polyvinyl chloride and polystyrene.关键词：Polyvinyl chloride;Polystyrene;Microwave irradiation;Friedel-Crafts reaction;Graft
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发布时间：2021-03-19 - 摘要：The block copolymer or graft copolymer formed by the in situ interface chemical reaction can be used as effective compatibilizer in the process of polymer blending materials.The structural evolution of an A/B/S ternary mixture is investigated in which the A and B components can undergo a reversible chemical reaction to form S which may act as a compatibilizer.The free-energy Lattice Boltzmann simulation method (LBM) was adopted in this study.In this theoretical frame work,the chemical reaction terms can be incorporated into the second order parameter drift-diffusion equation via a specific forcing term.Using this method,the effect of chemical reaction rate,shear velocity and oscillatory frequency on the structure evolution was simulated.We provided the space distribution and the time evolution of compatibilizer S.The simulative results denoted that the component S can reduce the size of the dispersed phase greatly.Increasing the chemical reaction rate too much can lead the compatibilizer to form independent phase zone and not distribute in the interface.The high shear velocity and low oscillatory frequency got the phase structure to be stretched especially closed to the shear boundary.They are the crucial factors determining the structure evolution of blend mixture under shear flow.Finally,these results provide guidelines for controlling the morphology of this complex mixture.关键词：Chemically reactive mixtures;Shear flow;Lattice Boltzmann simulation
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发布时间：2021-03-19 - 摘要：Poly(-caprolactone)-b-poly(L-lysine) (PCL-b-PLys) that was synthesized by ring-opening polymerization,self-assembled into spherical micelles with PCL core and PLys shell in aqueous solution,and the intensity-averaged diameter was about 287 nm.Using the micelle as template,HAuCl4 was reduced by HCHO in basic solution (i.e.,pH 10) and with ultrasonication for 4 min,the coordination of the primary amines of PLys with gold resulted in the growth and accumulation of gold in the micellar shell,and finally led to the formation of the micelle@gold nanoshell.To the best of our knowledge,the micelle@gold nanoshell was prepared for the first time,and then fully characterized by UV-Vis,XPS,WXRD,TEM,DLS,TGA,photothermal conversion and in vitro tumor cell-killing experiment.The average diameter of the micelle@gold nanoshell was about 380 nm,which was about 30%~40% bigger than the original micelle,and the mass fraction of gold accounted for about 2/3.Moreover,it showed strong surface plasmon resonance absorption in the near infrared region,and gave a high photothermal conversion efficiency of 63%.After near-infrared laser irradiation for 10 min,about 60% of Hela cells were killed,while the gold nanoshells had low cytotoxicity.Collectively,the micelle@gold nanoshells demonstrated good biocompatibility,and could efficiently kill tumor cells in vitro,making them potential for photothermal tumor therapy.关键词：PCL-b-PLys;Micelle@gold nanoshell;NIR-absorbance;Photothermal therapy
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发布时间：2021-03-19 - 摘要：Polymer particles with core-shell structure,P(St-NVP),based on styrene (St) and N-vinyl-2-pyrrolidone (NVP) were prepared through emulsion polymerization using potassium persulflate (KPS) as the initiator,methylenebisacrylamide (MBA) as the crosslinker in the presence of polystyrene (PSt) seed latex particles synthesized by surfactant-free emulsion polymerization.Using the P(St-NVP) particles as template,P(St-NVP)/Ag composites were obtained by chemical deposition.The morphology,component,structure and catalytic performance of the composite particles were characterized and investigated by Fourier transform infrared spectroscopy,X-ray diffraction,scanning electron microscopy,transmission electron microscopy,laser diffraction particle size analysis and UV-visible spectroscopic techniques.The results revealed that the P(St-NVP)/Ag composite particles were of spherical particles with quite narrow size distribution.The particle size was between 400 nm and 700 nm,depending on the preparation conditions.The size decreased with the increase in the amount of the crosslinker and the concentration of the seed latex polymer.Ag nanoparticles of about 10 nm in diameter were well coated on the surface of,or implanted inside,the particles due to the complexation of functional groups on polymer chains.The observed diffraction peaks of the composite particles showed that the Ag particles were of face centered cubic crystal structure.The composite particles with Ag nanoparticles were used as the oxidant in 4-nitrophenol reduction to 4-aminophenol with NaBH4 as the reducer,and the reduction was significantly enhanced with the presence of Ag nanoparticles.关键词：Styrene;N-vinyl-2-pyrrolidone;Composite particles;Silver nanoparticles;Catalytic performance
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发布时间：2021-03-19 - 摘要：A sandwich-like sample configuration of three polymer layers was designed and used for rheological probing of the chain interdiffusion of two miscible polydisperse polymers in the melt state.It was found that the interdiffusion process can be probed by the growth of the rheological responses with time as long as the polymer pair constituting the interface has an adequate difference in rheological properties and is miscible.To understand the rheological signal of the interdiffusion process,a phenomenal rheological model combined with a fitted model for the experimental data was proposed.With the two models,two important model parameters concerning the interdiffusion dynamics were discussed.The results show that the interdiffusion process can be probed by rheological properties and the dynamics of inter diffusion is greatly affected by the difference in the molecular weight between the polymer pair.The first parameter,the exponent for the time dependent behavior of the interpenetration distance,was found to be larger than the typical value of 1/2,which is ascribed to the dynamic dilution process as proposed in tube theories.While,by the other parameter,the characteristic time tc,the interdiffusion coefficient can be estimated.It is noted that these two parameters were found to be frequency-dependent,which can be mainly ascribed to the polydispersity of the molecular weight.Finally,the results indicate that the fast-mode model is reasonable for the understanding of the interdiffusion process.关键词：Interdiffusion;Rheological responses;Frequency dependent behavior;Polymer melt
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发布时间：2021-03-19 - 摘要：Thermoplastic polyurethane (TPU) and its composites filled with glass fiber (GF) or glass beads (GB) were studied,which were prepared by incorporation of antioxidant,dispersant and release agent via melt blending.The effects of fillers on the thermal properties,microstructure and rheological behavior of TPU were investigated by TGA,SEM and dynamic rheological test.Dynamic rheological studies showed that TPU was of thermal-sensitivity,determined by the hard segment content of the molecular chains.Hence,in addition to shear effect,the effect of temperature was needed to be especially considered during processing.By means of small amplitude oscillatory shear method,the effects of the fillers on the rheological properties of TPU matrix were obtained,and the results indicated that the fillers endowed the composites with higher complex viscosity,lower thermal-sensitivity,broader scale of processing temperature and better processing ability.The filler shapes as well as filler content showed big effects on the increasing of complex viscosity,which could be analyzed by equivalent diameter.The SEM studies indicated that the GF or GB dispersed well and had good interfacial interactions with the TPU matrix,thus resulting in better heat resistance of the composites compared with pure TPU,which was reflected in thermal gravimetric curves.Whats more,the effects of GF and GB on thermal properties of TPU were analyzed from the point of view of specific surface area.关键词：TPU;Composite;Rheology;Interface;Heat resistance
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发布时间：2021-03-19 - 摘要：A water-soluble solvent,i.e.,epsilon-caprolactam (CPL),was used as the diluent and microporous poly(phenylene sulfide) (PPS) membranes were prepared through the thermally induced phase separation method.One of the greatest advantages of using CPL is that the solvent is soluble to water and is able to be extracted by water,which is very clean and friendly to environment.By selecting a suitable composition,the pour-pressing process was used to make PPS flat membranes for performance and morphology characterization.The phase behavior of PPS/CPL blend was first depicted to identify the phase separation process of this binary system.The effects of cooling rate and polymer concentration on the morphologies and performances of PPS membranes were then investigated.The studies showed this binary system underwent solid-liquid phase separation via nucleation and growth of polymer crystals and then produced a structure described as polymer spherulite-like.The process upon slow cooling permits the system to develop into a leafy structure with more open pores and larger pore size than the rapid cooling process,which endows the membranes with a large permeation water flux.It was indicated through experiments that there was an operative window to prepare a poly(phenylene sulfide) membrane with pure water flux greater than 100 L/m2h and pore size about 4~5 m.The effect of polymer concentration was also studied and it was found that the permeability of microporous membranes decreased as the concentration of PPS increased.The membranes without any permeability were prepared when the polymer concentration was greater than 50 wt% due to too low porosity of the membranes.关键词：PPS;CPL;Microporous membrane;TIPS
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发布时间：2021-03-19 - 摘要：Thermoresponsive protein nanocapsules were prepared via in situ precipitation polymerization using protein bovine serum album (BSA) as the model protein,N-isopropyl acrylamide (NIPAM) as the monomer,and N,N'-methylene bis-acrylamide (BIS) as the crosslinker.To synthesize such nanocapsules,BSA was first attached with polymerizable groups through reacting with N-acryloxysuccinimide (NAS),and the degree of reaction was examined using MALDI-TOF mass spectrometer.By adjusting the NIPAM/BSA ratio,BSA nanocapsules (nBSA) with different sizes (7.4 nm to 17 nm) were synthesized successfully and confirmed by dynamic light scattering (DLS) and transmission electron microscopy (TEM).Thermoresponsive behavior of nBSA was studied by monitoring the size-temperature trending test through DLS.Reversible thermoresponsive property of obtained nBSA was observed from DLS test,with responsive temperatures ranging from 33℃ to 41℃ accordingly of different sized protein nanocapsules synthesized from various NIPAM/BSA ratios.There is an obvious particle size increase of all synthesized BSA nanocapsules after their exposure to higher temperatures above their responsive ones.The observed particle sizes of nBSA at higher temperatures were increased by 16 to 33 times accordingly.By observing the HeLa cell viability after incubation with the nanocapsules at different concentrations for 24 h,the result shows the nanocapsules exhibit low cytotoxicity.This work provides a new synthesis method of thermoresponsive protein nanocapsules for various applications.关键词：Thermoresponsive;Nanoparticle;N-isopropylacrylamide;Protein encapsulation
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发布时间：2021-03-19 - 摘要：Core-containing backbone hydrolysable hyperbranched polyacetals (HBPAs) were synthesized via the transacetalization polymerization process between a AB2 type monomer (2-(4-(dimethoxymethyl)-phenoxy)ethanol) and a B2 type core (benzaldehyde dimethyl acetal).By continuously removing the alcohol with lower boiling point,the reaction moves toward the direction of polymerization.The molecular weight and polydispersity could be modulated by varying the core feed ratio.Higher core feed ratio led to lower molecular weight and polydispersity.Under weak acidic conditions,the backbone of the polymer broke down and yielded 4-(2-hydroxyethoxy)-benzaldehyde as the final degradation product.The experiments showed that their hydrolysis rates were also obviously affected by the core content in the hyperbranched polyacetals.Increasing core feed ratio can accelerate the hydrolysis rate.By introducing core molecules,the structure and properties of hyperbranched polyacetals can be controlled to a certain extent.关键词：Transacetalization polymerization;Hyperbranched polyacetals;Hydrolysable backbone
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发布时间：2021-03-19 - 摘要：Studies on evolution of crystal patterns of single-layer lamellae of three star-shaped poly(ethylene oxide)s (PEO) samples with 3,4 and 8 arms and a 5000 molecular weight for each arm and a 5000 linear PEO sample were reported.With increasing crystallization temperature the dendritic-to-seaweed and seaweed-to-faceted crystal pattern transitions in these samples were observed.Plotting the transition temperatures with the arm number generated a morphology diagram that clearly reflected the effect of macromolecular topology on the crystal pattern formation and selection.Increasing the arm number of the star-shaped PEOs results in a topological change from an anisotropic line to an isotropic sphere,so the molecular motion also alters from a sliding motion of linear macromolecules to a coordination motion of star-shaped macromolecules.These changes further affect the two key issues of crystal pattern formation:the diffusion and crystallization of macromolecules,so the crystal pattern formation and selection of star-shaped macromolecules depend on their molecular topology.关键词：Poly(ethylene oxide);Crystallization;Pattern formation;Star-shaped polymers
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发布时间：2021-03-19 - 摘要：Using trihydroxymethyl propane triacrylate (TMPTA) and styrene (St) as the monomers and 2,2-azobis-(isobutyronitrile) (AIBN) as the initiator,uniform and crosslinked microspheres of P(TMPTA-St) were prepared through precipitation polymerization in ethanol.Monomer conversion,yields of microspheres and soluble oligomers were determined,size and size distribution of the microspheres were examined by scanning electron microscope.Results indicate that uniform microspheres were obtained with 10 wt% to 60 wt% of TMPTA in the monomers with a yield of about 50% for the microspheres at 60 wt% of TMPTA.Monomer conversion and microsphere yield were increased with TMPTA amount.Increase in AIBN was also useful to increase monomer conversion and microsphere yield; the soluble oligomers were also increased at the same time.By adding water in ethanol while keeping AIBN at 2 wt% relative to the monomers,monomer conversion of above 90% was achieved with the yield of the microspheres at about 83%.An optimized protocol,by which about 98% of monomer conversion and 90% of uniform microspheres were achieved,is recommended,in which 26 vol% of water was added to ethanol as the polymerization solvent combined with 6 wt% of AIBN.The results were interpreted and the mechanism of the polymerization was discussed.关键词：Trihydroxymethyl propane triacrylate-styrene;Precipitation polymerization;Uniform polymer microspheres;Water-ethanol mixed solvent;Oligomers
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发布时间：2021-03-19
Research Article
- 摘要：Click chemistry,proposed by Sharpless in 2001,has become a powerful and versatile synthetic tool because of some unique advantages,such as mild and simple reaction conditions,high efficiency and selectivity,and exceptional tolerance towards a wide range of functional groups and reaction conditions.In this review,the development of click chemistry (e.g.,its history,characteristics and classifications) is firstly introduced.Subsequently,this paper focuses on the applications of click chemistry in the synthesis of a variety of topological polymers,including linear,brush-shaped,star-like,cyclic polymers,and dendrimers.Finally,the limitations and prospects of click chemistry are also discussed.关键词：Click chemistry;Topological polymers;Functional polymers
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发布时间：2021-03-19
Reviews
- 摘要：A novel organic ligand 2-pyridylaldehyde-4'-dodecyloxybenzoyl hydrazone ( L ) with a long alkyl chain and a coordination group was designed and synthesized.The molecular structure of L was confirmed by 1H nuclear magnetic resonance (1H-NMR) spectrum,Fourier-transform infrared (FTIR) spectrum,electrospray ionization-mass (ESI-MS) spectrum and elemental analysis (EA). L itself could gel the mixture of ethanol and water at suitable weight ratios to form white gels (defined as L gel) by mixing method. L could also gel the ethanol and water mixture with a series of metal ions,including Co(Ⅱ),Ni(Ⅱ),Zn(Ⅱ) and Cu(Ⅱ) to form metallogels.The SEM observation revealed that networks of fibers were formed in both the L gel and the Cu(Ⅱ) based metallogels.As indicated by the ultraviolet (UV) absorption spectra,the drastic decrease in the extinction coefficient at max as the concentration of L confirmed the formation of aggregates of L molecules in ethanol.The rheological properties of the gel samples were tested by plate rheometer.The metallogels displayed improved strength and gel stability compared to L gel at the same gel concentration.Furthermore,the coordination complex of L and Cu(Ⅱ) at molar ratio of 2 ∶1 was synthesized and confirmed by ESI-MS.According to the FTIR spectra and UV absorption spectra of the coordination complex and the CuAc2 based metallogel,the coordination between L and metal ions was found to exist in the metallogel.关键词：Supramolecular gel;Ligand;Metallogel;Coordination
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发布时间：2021-03-19
Research Bulletin
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