AGGREGATION AND MICELLE-LIKE NANO-STRUCTURE OF TWO AZO POLYELECTROLYTES

TUO Xinlin; WANG Xiaogong; LIU Deshan

doi:null

您当前的位置：

首页 >

文章列表页 >

AGGREGATION AND MICELLE-LIKE NANO-STRUCTURE OF TWO AZO POLYELECTROLYTES

Research Article | 更新时间：2021-03-19

- AGGREGATION AND MICELLE-LIKE NANO-STRUCTURE OF TWO AZO POLYELECTROLYTES
- Acta Polymerica Sinica Issue 4, Pages: 462-466(2002)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：20 August 2002，
扫描看全文
TUO Xinlin, WANG Xiaogong, LIU Deshan. AGGREGATION AND MICELLE-LIKE NANO-STRUCTURE OF TWO AZO POLYELECTROLYTES. [J]. Acta Polymerica Sinica (4):462-466(2002)
DOI：

TUO Xinlin, WANG Xiaogong, LIU Deshan. AGGREGATION AND MICELLE-LIKE NANO-STRUCTURE OF TWO AZO POLYELECTROLYTES. [J]. Acta Polymerica Sinica (4):462-466(2002) DOI：

摘要

研究了两种具有不同化学结构的阴离子型偶氮聚电解质在四氢呋喃/水混合溶剂中的聚集行为 .利用紫外可见光谱和透射电镜等研究了偶氮聚电解质的聚集过程以及相应聚集体的形貌以及介质pH对聚集的影响 .结果表明

在四氢呋喃 /水混合溶剂中

随着水含量的增加

偶氮生色团逐渐聚集

其紫外光谱上最大吸收峰位置逐渐蓝移

而强度逐渐下降 .在较高浓度条件下

形成的聚集体可以用透射电镜直接观察到

呈现直径为 80nm左右的球形超分子结构 .与相应的偶氮两亲性小分子相比

这两种偶氮聚电解质形成的聚集体具有更高的稳定性 .由于羧酸基团和偶氮生色团相互连接的方式不同

溶液pH对这两种聚集体具有完全相反的影响 .偶氮生色团的聚集会严重影响偶氮生色团反式至顺式的异构化效率 .

Abstract

Aggregation behaviors of two anionic azo polyelectrolytes with different chemical structures were studied in the tetraphydrofuran(THF)／water mixture．The aggregating process was traced by UV-Vis absorption spectroscopy and the aggregates formed were imaged with transmission electron microscopy(TEM)．The pH effect on the aggregation was also investigated．With the increasing of water content in THF／water mixture

the azo chromohpores in the polyelectrolytes aggregate gradually

which results in an obvious blue-shift of the absorption maximum and a decrease of absorption intensity in the UV-Vis spectra．In the solutions with high concentration of azo polyelectrolytes

the aggregates were visualized with TEM to be nano particles with average diameter of about 80 nm．Results shows that the aggregates are much more stable than the related aggragates formed form small azo functionalized amphiphile．In addition

due to the difference in the architecture style of zao chromophores and carboxyl groups

pH of the medium has an opposite effect on the PCAPE and PPAPE aggregates．

关键词

偶氮聚电解质聚集纳米聚集体

Keywords

references

更多指标>

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

PREPARATION, pH SENSITIVITY AND THERMO-OPTIC PROPERTIES OF AZO POLYELECTROLYTES

CONSTRUCTION OF AZO POLYELECTROLYTE SELF-ASSEMBLED MULTILAYERS BY DIPPING AND SPIN-COATING

The Association Behavior and Rheological Properties of PS-b-PAA Amphiphilic Diblock Copolymer Polyeletrolyte Micelles in Water

pH EFFECT ON ELECTROSTATIC LAYER-BY-LAYER SELF-ASSEMBLY OF A SIDE-CHAIN AZO POLYELECTROLYTE

SPIN SELF-ASSEMBLY OF A POLYACRYLATE-BASED AZO POLYELECTROLYTE AND MULTILAYER PHOTORESPONSIVE BEHAVIOR

Related Author

No data

Related Institution

No data

Postal code：100190
Tel：010-62588927 Email：gfzxb@iccas.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备05002797号-8 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰