An investigation on the fluorescence quenching of 9-aminoacridine by certain pyrimidines

被引:9
|
作者
Manivannan, C. [1 ]
Renganathan, R. [1 ]
机构
[1] Bharathidasan Univ, Sch Chem, Tiruchirappalli 620024, Tamil Nadu, India
关键词
9-Aminoacridin; Fluorescence quenching; Uracils; ELECTRON-TRANSFER; METHYLENE-BLUE; DYNAMICS; STATE; GUANINE; DAMAGE; PROBE; DYE; DBO;
D O I
10.1016/j.saa.2011.07.080
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
The fluorescence quenching of 9-aminoacridine by certain substituted uracils in water was studied using absorption, steady state and time resolved measurements. The bimolecular quenching rate constants (k(q)), binding constant K and number of binding sites (n) were calculated based on the fluorescence quenching data. The free energy change (Delta G(et)) for electron transfer process was calculated by Rehm-Weller equation. From lifetime measurement we observed that the quenching was mainly due to static mechanism involving ground state complex formation. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:475 / 480
页数:6
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