Photoinduced charge-transfer association of tetracyanoquinodimethane with aminobiphenyls

被引：0

作者：

Department of Chemistry, Chosun University, Gwangju 501-759, Korea, Republic of ^{[1
]}

不详 ^{[2
]}

机构：

[1] Department of Chemistry, Chosun University

[2] IT Convergence Research Laboratory, ETRI

来源：

Bull. Korean Chem. Soc. | 2008年 / 5卷 / 948-952期

关键词：

2-Aminobiphenyl; 4-Aminobiphenyl; 7,7′,8,8′- Tetracyanoquinodimethane (TCNQ); Benzidine; Photoinduced electron transfer;

D O I：

10.5012/bkcs.2008.29.5.948

中图分类号：

学科分类号：

摘要：

The molecular association of acceptors with electron donors is studied in the highly-polar solvent CH3CN. Tetracyanoquinodimethane (TCNQ) forms a stable charge-transfer complex with donor molecules such as 4-aminobiphenyl (4-AB), benzidine (BD) and 2-aminobiphenyl (2-AB) with high association constants. The complexes of TCNQ with 4-AB or BD show new absorption bands at around 800 and 500 nm, which can be identified as reduced TCNQ•- and TCNQ 2- species, respectively. These bands grow quickly upon photo-irradiation, implying that the charge-transfer complexes are easily formed in an excited state. Conversely, a small spectral manifestation of the charge transfer was observed in the case of 2-AB complex. It is demonstrated that the structural orientation between the geminate ion pairs could play an important role in building a stable complex.

引用

页码：948 / 952

页数：4

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