THE TICT EXCITED-STATE OF SECONDARY AROMATIC-AMINES

被引：27

作者：

ROTKIEWICZ, K ^{[1
]}

RETTIG, W ^{[1
]}

机构：

[1] TECH UNIV BERLIN,IWAN N STRANSKI INST PHYS & THEORET CHEM,W-1000 BERLIN 12,GERMANY

来源：

JOURNAL OF LUMINESCENCE | 1992年 / 54卷 / 04期

关键词：

D O I：

10.1016/0022-2313(92)90069-L

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The fluorescence spectra, quantum yields and lifetimes of 4-(methylamino)benzonitrile (MABN), its 3-methylated derivative (3-MMABN) and of 4-(amino)benzonitrile (ABN) were measured and discussed. Only 3-MMABN shows dual fluorescence. The long wave anomalous band is of forbidden nature and therefore assigned to the TICT state. It occurs most strongly for water as solvent due to: i) its high polarity, ii) a specific protic-solvent induced quenching of the short wave band. The results are discussed on the basis of two sterically hindered ground state conformers for 3-MMABN, and of the energetic separation of 1L(a) and 1L(b) states. The explanation is supported by the results of force field calculations.

引用

页码：221 / 229

页数：9

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