{"title":"Flash photolysis study of diaminopyridines","authors":"J. Wolleben, A.C. Testa","doi":"10.1016/0047-2670(87)80004-7","DOIUrl":null,"url":null,"abstract":"<div><p>The triplet—triplet absorption spectra of three diaminopyridines have been assigned from variable-temperature flash photolysis studies. In all cases the lowest triplet state is ππ* with a phosphorescence lifetime of about 2 s at 77 K in ethyl ether—pentane—ethyl alcohol. Complete neglect of differential overlap—configuration interaction calculations were performed to supplement the interpretation of the fluorescence and phosphorescence data and to provide a satisfactory correlation of the observed and predicted behavior of these molecules.</p></div>","PeriodicalId":16771,"journal":{"name":"Journal of Photochemistry","volume":"39 1","pages":"Pages 41-47"},"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)80004-7","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Photochemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0047267087800047","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The triplet—triplet absorption spectra of three diaminopyridines have been assigned from variable-temperature flash photolysis studies. In all cases the lowest triplet state is ππ* with a phosphorescence lifetime of about 2 s at 77 K in ethyl ether—pentane—ethyl alcohol. Complete neglect of differential overlap—configuration interaction calculations were performed to supplement the interpretation of the fluorescence and phosphorescence data and to provide a satisfactory correlation of the observed and predicted behavior of these molecules.
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