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Reference type: Journal
Authors: Kim Y, Jeon JB, Chang JY
Article Title: Molecularly imprinted fullerene-silica nanocomposite particles for sensitive and selective recognition of diethylstilbestrol.
Publication date: 2016
Journal: Materials Letters
Volume: 182
Page numbers: 235-239.
DOI: 10.1016/j.matlet.2016.06.099
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0167577X16310539

Abstract: A highly sensitive, molecularly imprinted fluorescent sensor was fabricated using a C60 fullerene as the signal transducer and silica as the imprinting matrix. The incorporation of C60 and the formation of diethylstilbestrol (DES) imprinted sites in the silica network were achieved by the sol-gel method. C60 has a narrow band gap between the ground and excited states, resulting in a weak photoluminescence. However, C60 showed a strong emission when it was incorporated into a molecularly imprinted silica matrix. DES imprinted fullerene-silica nanocomposite particles (MIFSNCs) showed an intense fluorescence emission with the peak maximum at ~600 nm. The fluorescence intensity of MIFSNCs significantly decreased with increasing DES concentration. MIFSNCs exhibited a linear Stern-Volmer relationship for DES and its structural analogs. The quenching constant of MIFSNCs for DES was about five times higher than those for DES analogs, indicating the highly selective recognition property
Template and target information: diethylstilbestrol, DES
Author keywords: molecular imprinting, Fullerene, fluorescence quenching, Silica particle, diethylstilbestrol

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