Thin-film polydiacetylenes of a stable blue phase based on symmetrical and unsymmetrical diacetylene N-arylcarbamates

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Abstract

The conditions and features of the formation of Langmuir monolayers of symmetrical and asymmetrical diacetylene N-arylcarbamates and the structural organization of Langmuir-Schaefer films based on them were studied. Photopolymerization of monolayer solid films of two types of molecules was monitored using absorption spectroscopy and showed the transition of diyne molecules to the blue phase polydiacetylene state. The efficiency of the solid-phase topochemical polymerization reaction in a film of symmetrical diynes turned out to be 5 times higher than in a film of asymmetrical diyne molecules. The morphology of monolayer surfaces before and after UV irradiation was studied using scanning electron microscopy.

About the authors

А. S. Alekseev

A. M. Prokhorov General Physics Institute of the Russian Academy of Science

Author for correspondence.
Email: alexanderalekseev@yandex.ru
Russian Federation, Moscow

S. Yu. Vyaz’min

Zh. I. Alferov Federal State Budgetary Institution of Higher Education and Science Saint Petersburg National Research Academic University of the Russian Academy of Science

Email: alexanderalekseev@yandex.ru
Russian Federation, St. Petersburg

A. В. Ivanov

A. M. Prokhorov General Physics Institute of the Russian Academy of Science

Email: alexanderalekseev@yandex.ru
Russian Federation, Moscow

V. V. Klechkovskaya

NRC “Kurchatov Institute”

Email: alexanderalekseev@yandex.ru

Shubnikov Institute of Crystallography of Kurchatov Complex of Crystallography and Photonics

Russian Federation, Moscow

М. S. Lukasov

NRC “Kurchatov Institute”

Email: alexanderalekseev@yandex.ru

Shubnikov Institute of Crystallography of Kurchatov Complex of Crystallography and Photonics

Russian Federation, Moscow

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