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Nonradiative Energy Migration in Spherical Nanoparticles Theoretical Model and Monte Carlo Study (vol 126, pg 11209, 2022)

作     者:Kulak, Leszek Schlichtholz, Agnieszka Bojarski, Piotr 

作者机构:Faculty of Applied Physics and Mathematics Gdańsk University of Technology Narutowicza 11/12 Gdańsk 80-233 Poland Faculty of Mathematics Physics and Informatics University of Gdańsk Wita Stwosza 57 Gdańsk 80-308 Poland 

出 版 物:《JOURNAL OF PHYSICAL CHEMISTRY C》 (J. Phys. Chem. C)

年 卷 期:2022年第126卷第37期

页      面:16075-16075页

核心收录:

学科分类:081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程(可授工学、理学学位)] 0703[理学-化学] 

主  题:Approximation Fluorescence Fluorophores Molecules Nanoparticles 

摘      要:Analytical model of nonradiative energy migration (homotransfer) within the set of chemically identical fluorophores distributed on the surface of a spherical nanoparticle is for the first time presented. The expression for emission anisotropy decay is obtained. The method of Green’s function was used to solve the master equation describing this stochastic process. An expansion in powers of the fluorophore density to investigate this finite volume problem was employed. A very good result for the Green function directly related to emission anisotropy was obtained by using the Padé approximant. It was found that emission anisotropy decay depends strongly not only on the number of fluorophores linked to the spherical nanoparticles but also on the ratio of critical radius to nanoparticle radius, which is crucial for the optimal design of antenna-like nanostructures. Coherence of the model was verified by Monte Carlo simulations and excellent quantitative agreement was found between theoretical and Monte Carlo simulation results.

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