Trans-cis photoisomerization in nanostructured floating layers and x-ray diffraction study of Langmuir-Schaefer films of nonyloxypheylazocinnamic acid. (24th May 2017)

• Record Type: Journal Article
• Authors: Pisani, M.; Maiorova, L. A.; Francescangeli, O.; Fokin, Dm. S.; Nikitin, K. S.; Burmistrov, V. A.; Kuvshinova, S. A.; Mengucci, P.; Koifman, O. I.
• Is Part Of: Molecular crystals and liquid crystals. Volume 649(2017)
• Page Start: 2
• Page End: 10
• Publication Date: 2017-05-24
• Subjects: Floating M-monolayer -- 2D nanoaggregates -- UV-irradiation -- Langmuir-Schaefer films -- X-ray diffraction; Molecular crystals -- Periodicals; Liquid crystals -- Periodicals; Liquid crystals; Molecular crystals; Periodicals; 548
• DOI: 10.1080/15421406.2017.1303917
• Languages: English
• ISSNs: 1542-1406

Abstract

ABSTRACT: Azo-functionalised materials are of special interest due to their photochromic nature, i.e. reversible trans – cis isomerisation upon photoirradiation. The structure and properties of Langmuir monolayers of nonyloxyphenylazocinnamic acid (NOPACA) with and without exposure to UV-irradiation were studied. The NOPACA floating layer structure was determined by using a quantitative method of compression isotherm analysis. The results showed that the structure of two dimensional face-on M -nanoaggregates, the stable structural elements of floating monolayers, changes when exposed to UV-irradiation. Langmuir-Schaefer films of NOPACA were prepared by deposition of floating layers and studied using X-ray diffraction technique.