Photophysics of trans-stilbene analogues: Indolo[3,2-b]indole and its heterosubstituted sulfur and selenium derivatives
書誌事項
- 公開日
- 1997-03
- 権利情報
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- https://www.elsevier.com/tdm/userlicense/1.0/
- DOI
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- 10.1016/s0301-0104(97)00018-9
- 公開者
- Elsevier BV
この論文をさがす
説明
Abstract The rates of radiative and nonradiative depopulation channels of the lowest excited singlet and triplet states have been determined for indolo[3,2- b ]indole and its derivatives in which one or two nitrogen atoms have been replaced by sulfur or selenium. Introduction of the heavy atom leads to activation of both S 0 ← S 1 internal conversion and T 1 ← S 1 intersystem crossing. The nonradiative rates of T 1 depopulation are affected much more strongly than the radiative ones. The results are interpreted in terms of a trans -stilbene-like character of excited indoloindoles containing heavy heteroatoms. The evidence for the geometry change upon excitation is also provided by the results of luminescence anisotropy measurements.
収録刊行物
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- Chemical Physics
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Chemical Physics 216 (1-2), 179-192, 1997-03
Elsevier BV