Fluorescence quenching of N,N-bis(2,5-di-tert-butylphenyl)-3,4:9,10-perylenebis(dicarboximide) (DBPI) by silver nanoparticles

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• 作者：Samy A. El-Daly ; Mohammed M. Rahman ; Kahlid A. Alamry ; Abdullah M. Asiri
• 关键词：N ; N-bis(2 ; 5-di-tert-butylphenyl)-3 ; 4 ; 9 ; 10-perylenebis(dicarboximide) ; Silver nanoparticles ; Quenching ; Fesem
• 刊名：Journal of Luminescence
• 出版年：April, 2014
• 年：2014
• 卷：148
• 期：Complete
• 页码：303-306
• 全文大小：645 K

文摘

The interaction of a perylene derivative namely N,N-bis(2,5-di-tert-butylphenyl)-3,4:9,10-perylenebis(dicarboximide) (DBPI) with colloidal silver nanoparticles (AgNPs) was studied in ethanol and ethylene glycol using steady state fluorescence quenching measurements. The Stern-Volmer quenching rate constant (K_sv) was calculated as 4.03脳10⁹ and 29.14脳10⁹ M^鈭? in ethanol and ethylene glycol, respectively. From fluorescence quenching data, static quenching and energy transfer play a major role in the fluorescence quenching of DBPI by AgNPs. The apparent association constant (k_app) was calculated as 1.26脳10⁸ M^鈭? in EtOH and 1.83脳10⁹ M^鈭? in ethylene glycol. Due to potential AgNPs interaction with DBPI, the average AgNPs size is increased slightly from ~37.1 nm (As-prepared) to 48.9 nm.