{"title":"假氮杂烯的光物理性质:7-氮杂酚衍生物","authors":"J. Waluk, B. Pakuła, S.J. Komorowski","doi":"10.1016/0047-2670(87)80005-9","DOIUrl":null,"url":null,"abstract":"<div><p>Three pseudoazulenes derived from 7-azaindole reveal photophysical properties characteristic of this class of compounds: strongly temperature-dependent S<sub>1</sub> → S<sub>0</sub> fluorescence, weak phosphorescence, very small S<sub>1</sub>—T<sub>1</sub> splitting, decrease in dipole moment on excitation to S<sub>1</sub> (ππ*) and S<sub>2</sub>(ππ*) states and dimerization at low temperatures in non-polar solvents. Photoacoustic studies show that internal conversion is the dominant channel for the deactivation of the lowest excited singlet state.</p></div>","PeriodicalId":16771,"journal":{"name":"Journal of Photochemistry","volume":"39 1","pages":"Pages 49-58"},"PeriodicalIF":0.0000,"publicationDate":"1987-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0047-2670(87)80005-9","citationCount":"4","resultStr":"{\"title\":\"Photophysics of pseudoazulenes: 7-azaindole derivatives\",\"authors\":\"J. Waluk, B. Pakuła, S.J. Komorowski\",\"doi\":\"10.1016/0047-2670(87)80005-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Three pseudoazulenes derived from 7-azaindole reveal photophysical properties characteristic of this class of compounds: strongly temperature-dependent S<sub>1</sub> → S<sub>0</sub> fluorescence, weak phosphorescence, very small S<sub>1</sub>—T<sub>1</sub> splitting, decrease in dipole moment on excitation to S<sub>1</sub> (ππ*) and S<sub>2</sub>(ππ*) states and dimerization at low temperatures in non-polar solvents. Photoacoustic studies show that internal conversion is the dominant channel for the deactivation of the lowest excited singlet state.</p></div>\",\"PeriodicalId\":16771,\"journal\":{\"name\":\"Journal of Photochemistry\",\"volume\":\"39 1\",\"pages\":\"Pages 49-58\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1987-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0047-2670(87)80005-9\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Photochemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0047267087800059\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Photochemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0047267087800059","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Photophysics of pseudoazulenes: 7-azaindole derivatives
Three pseudoazulenes derived from 7-azaindole reveal photophysical properties characteristic of this class of compounds: strongly temperature-dependent S1 → S0 fluorescence, weak phosphorescence, very small S1—T1 splitting, decrease in dipole moment on excitation to S1 (ππ*) and S2(ππ*) states and dimerization at low temperatures in non-polar solvents. Photoacoustic studies show that internal conversion is the dominant channel for the deactivation of the lowest excited singlet state.
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