THE INTERACTION OF THE EXCITED-STATES OF SAFRANINE-T WITH ALIPHATIC-AMINES IN ORGANIC-SOLVENTS

被引：26

作者：

ENCINAS, MV

PREVITALI, CM

BERTOLOTTI, SG

NEUMANN, MG

机构：

[1] UNIV SANTIAGO CHILE,FAC CIENCIAS,DEPT QUIM,SANTIAGO,CHILE

[2] UNIV NACL RIO CUARTO,DEPT QUIM & FIS,RA-5800 RIO CUARTO,ARGENTINA

[3] UNIV SAO PAULO,INST QUIM SAO CARLOS,BR-13560 SAO CARLOS,SP,BRAZIL

来源：

PHOTOCHEMISTRY AND PHOTOBIOLOGY | 1995年 / 62卷 / 01期

关键词：

D O I：

10.1111/j.1751-1097.1995.tb05240.x

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The reactions of the excited states of safranine T with aliphatic amines have been studied in methanol and acetonitrile. Quenching of the singlet and triplet states occurs by different mechanisms. Whereas the former excited state is quenched by a charge-transfer mechanism, the triplet state is quenched through proton transfer from the excited dye to the amine. This process leads to the unprotonated form of the dye in the triplet state, which is later quenched by amines to form the corresponding semireduced species. The monoprotonated triplet also undergoes self-quenching in both solvents (k = 1.2 X 10(8) M(-1) s(-1)).

引用

页码：65 / 70

页数：6

共 30 条

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