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Reference type: Journal
Authors: Paik P, Mastai Y, Kityk I, Rakus P, Gedanken A
Article Title: Synthesis of amino acid block-copolymer imprinted chiral mesoporous silica and its acoustically-induced optical Kerr effects.
Publication date: 2012
Journal: Journal of Solid State Chemistry
Volume: 192
Page numbers: 127-131.
DOI: 10.1016/j.jssc.2012.03.058
Alternative URL: http://www.sciencedirect.com/science/article/pii/S002245961200223X

Abstract: Chiral mesoporous SiO2 (CMS) have been synthesized and studied the Acoustically-Induced Optical Kerr Effects (AIOKE) and the results have been compared with non-chiral mesoporous silica. The CMS with controllable pore sizes (of ~3 nm) and high surface areas of ca. 650 m2g-1 was synthesized by mimicking the intrinsic chirality of the amino acid block copolymers. The chiral mesoporous materials were characterized through HRTEM, BET, small-angle XRD, 29Si-NMR and circular dichroism. AIOKE measurements have been performed using an Er:glass 20 ns laser with a 10 Hz frequency repetition. The optimal AIOKE results of the CMS were achieved for 9.7% of the chromophore in the matrices. We found that the AIOKE for the CMS mimicked with chiral block copolymers is quite high compared to the non-chiral SiO2. A difference in AIOKE for these two compounds is observed, enabling CMS that can be used for the design of the acoustically-operated quantum electronic devices
Template and target information: amino acid block-copolymers
Author keywords: mesoporous silica, Optical Kerr effects, block-copolymers, Chiral imprinting


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