상세정보
학술지
Photoinduced Charge-Transfer Association of Tetracyanoquinodimethane with Aminobiphenyls
- 발행일
- 200805
- 출처
- Bulletin of the Korean Chemical Society, v.29 no.5, pp.948-952
- ISSN
- 0253-2964
- 출판사
- 대한화학회 (KCS)
- 협약과제
- 08ZK1100, 생체내장형 신경계 인터페이스 시스템 개발, 정상돈
- 초록
- 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.
- KSP 제안 키워드
- 2-Aminobiphenyl, Absorption band, As 4, Association constants, Charge transfer complex(CTC), Excited states, Ion pairs, Molecular association, Photo-irradiation, Photoinduced charge, Polar solvent