Contact
    Start Publications Effect of acidity on morphologies and photodimerization ...
    ←  Publication Finder
    KSV NIMA

    Effect of acidity on morphologies and photodimerization kinetics in Langmuir-Blodgett monolayers of styrylquinoline derivatives

    Year: 2017

    Journal: Chin. Chem. Lett., Volume 28, JUN, page 1285–1289

    Authors: Ma, Yingxue; Lin, Lu; Zhang, Li; Liu, Minghua; Guo, Yuan; Lu, Zhou

    Organizations: National Natural Science Foundation of China [21473217, 21227802, 21303216]; Chinese Ministry of Science and Technology [2013CB834504]

    Keywords: Second harmonic generation; Photodimerization; Langmuir-Blodgett monolayers; Topo-chemical reaction; Acidity effect

    The real-time second harmonic generation was employed to investigate the [2+2] photodimerization of styrylquinoline (SQ) derivatives in Langmuir-Blodgett (LB) monolayers deposited from aqueous subphases with different acidity. It was discovered that the photodimerization rate constant significantly decreased upon the addition of acid. The additional atomic force microscopy measurements revealed that surface morphologies were correlated to the photodimerization kinetics. These experimental results provide direct evidence for the topo-chemical mechanisms of [2+2] photodimerization in LB films. The current study demonstrates that the intermolecular interactions and aggregation structures play important roles in the photochemical properties at surfaces. (C) 2017 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
    View publication