Spectroscopic and photoconductive properties of polymers containing trans-1,2-bis(9-carbazolyl)cyclobutane units sensitized by 2,4,7-trinitrofluorenone

Polymer Photochemistry Pub Date : 1985-01-01 DOI:10.1016/0144-2880(85)90027-2

Shigeo Tazuke, Takashi Inoue, Shogo Saito , Sumio Hirota , Hiroshi Kokado

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引用次数: 8

Abstract

A number of polymers containing trans-1,2-bis(9-carbazolyl)cyclobutane (DCzB) were examined for their photoconductivity in the presence of 2,4,7-trinitrofluorenone (TNF) and the results were correlated with the photophysical properties (excimer formation, energy migration, fluorescence quantum yield and fluorescence lifetime). Excimer formation by DCzB groups is sterically hindered whereas energy migration occurs efficiently in the DCzB polymers. Also, charge-transfer interaction with TNF is stronger for the DCzB polymers than for poly(9-vinylcarbazole) (PVCz). Photoconductivity of the DCzB polymers was better than that of PVCz when the charge-transfer band of the TNF-carbazole pair was irradiated, which agreed well with the photophysical observation. Although carrier generation and carrier transport processes could not be separately discussed at the moment, DCzB was shown to be a promising chromophore for photoconductive polymers.

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2,4,7-三硝基芴酮敏化含有反式-1,2-二(9-咔唑基)环丁烷单元的聚合物的光谱和光导性质

研究了含有反式-1,2-二(9-咔唑基)环丁烷(DCzB)的聚合物在2,4,7-三硝基芴酮(TNF)存在下的光电导率，并研究了其光物理性质(准分子形成、能量迁移、荧光量子产率和荧光寿命)。DCzB基的准分子形成在空间上受到阻碍，而能量迁移在DCzB聚合物中有效发生。此外，DCzB聚合物与TNF的电荷转移相互作用比聚(9-乙烯基咔唑)(PVCz)更强。当tnf -咔唑对的电荷转移带辐照时，DCzB聚合物的光电导率优于PVCz，这与光物理观察结果吻合较好。虽然载流子产生和载流子输运过程目前还不能单独讨论，但DCzB被证明是光导聚合物中一种很有前途的发色团。

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来源期刊

Polymer Photochemistry

CiteScore

1.20

自引率

0.00%

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