SYNTHESIS AND PHOTOPHYSICAL PROPERTIES OF NOVEL CONJUGATED RIGID-ROD POLY(BENZOBISOXAZOLE)S

GUO Peiying; WANG shanfeng; LEI Hui; WU Pingping; HAN Zhewen

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SYNTHESIS AND PHOTOPHYSICAL PROPERTIES OF NOVEL CONJUGATED RIGID-ROD POLY(BENZOBISOXAZOLE)S

Research Article | 更新时间：2021-03-19

- SYNTHESIS AND PHOTOPHYSICAL PROPERTIES OF NOVEL CONJUGATED RIGID-ROD POLY(BENZOBISOXAZOLE)S
- Acta Polymerica Sinica Issue 1, Pages: 86-92(2005)
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- Published：20 February 2005，
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GUO Peiying, WANG shanfeng, LEI Hui, WU Pingping, HAN Zhewen. SYNTHESIS AND PHOTOPHYSICAL PROPERTIES OF NOVEL CONJUGATED RIGID-ROD POLY(BENZOBISOXAZOLE)S. [J]. Acta Polymerica Sinica (1):86-92(2005)
DOI：

GUO Peiying, WANG shanfeng, LEI Hui, WU Pingping, HAN Zhewen. SYNTHESIS AND PHOTOPHYSICAL PROPERTIES OF NOVEL CONJUGATED RIGID-ROD POLY(BENZOBISOXAZOLE)S. [J]. Acta Polymerica Sinica (1):86-92(2005) DOI：

摘要

设计并合成了一系列共轭高分子——聚亚苯基苯并二噁唑 (PBO)

聚亚乙烯基苯并二噁唑 (PBOV)和聚亚丁二噁唑 (PBODV)

并对它们进行了表征 .用紫外吸收光谱和荧光光谱对聚合物的溶液和薄膜进行了详细的研究

研究结果表明分子结构中双键的引入可以降低聚合物的光带能隙

λmax从PBO溶液的428.5nm(Eg=2.76eV)

到PBOV溶液的 480.5nm(Eg=2.46eV)

再到PBODV溶液的496.0nm (Eg=2.38eV) .共轭程度的增加使得聚合物溶液更容易发生集聚从而导致荧光自熄灭.

Abstract

New conjugated rigid-rod polymers

poly(p-phenylene-benzobisoxazole) (PBO)

poly(benzabiso-xazole-2

6-diylvinylene) (PBOV)

and poly(benzobisoxazole-2

6-diyldivinylene) (PBODV) were synthesized

and their molecular structures．thermal stabilities and morphology of polymers were determined by FTIR

1H-NMR

TGA and WAXD respectively．The photophysical properties of polymer／MSA solutions were investigated by UV and photoluminescence spectroseopies The UV spectra and photoluminescence spectra of these new polymers in methanesulfonic acid suggest that the absorption spectra and optical bandgap of PBODV and PBOV have a red shift compared with those of the conjugated PBO. That is caused by the different conjugation structures in molecular chains of PBO

PBOV and PBODV.

关键词

高分子合成光物理性能紫外荧光光谱聚苯并二噁唑

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