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

作者：Manivannan C; Renganathan R^*

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2011, 82(1): 475-480.

DOI：10.1016/j.saa.2011.07.080

• 9-Aminoacridin
• Fluorescence quenching
• Uracils

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.

• 出版日期2011-11