Solid-phase transitions of polymorphs of 4-(4-N,N-dialkylaminophenyl) azobiphenyl-2,3 ',4 '-tricarbonitriles and their analogues

Solid-phase transitions of polymorphs of 4-(4-N,N-dialkylaminophenyl) azobiphenyl-2,3 ',4 '-tricarbonitriles and their analogues Full article

Journal

Thermochimica Acta
ISSN: 0040-6031 , E-ISSN: 1872-762X

Output data

Year: 2018, Volume: 669, Pages: 88-98 Pages count : 11 DOI: 10.1016/j.tca.2018.08.022

Tags

Azo dye; Polymorphism; X-ray and DSC measurements; Solid phase polymorphic modifications

Authors

Selivanova G.A. ¹ , Skolyapova A.D. ^1,2 , Dralyuk R.I. ² , Karpova E.V. ^1,2 , Shundrina I.K. ¹ , Bagryanskaya I.Yu. ^1,2 , Amosov E.V. ¹ , Basova T.V. ³ , Tretyakov E.V. ^1,2

Affiliations

1	(Данные Web of science) Russian Acad Sci, Siberian Branch, Inst Organ Chem, 9 Ac Lavrentiev Ave, Novosibirsk 630090, Russia
2	(Данные Web of science) Novosibirsk State Univ, 2 Pirogova Str, Novosibirsk 630090, Russia
3	(Данные Web of science) Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, 3 Ac Lavrentiev Ave, Novosibirsk 630090, Russia

A new series of push pull azo-dyes containing tricyanodiphenyl electron-withdrowing block, namely (4-N,N-dialkylaminophenyl)azobiphenyl-2,3',4'-tricarbonitriles, was proposed and synthesized. The azo-dyes possess high temperature stability and are prone to form polymorph modifications. DSC measurements indicated solid phase transitions of these polymorphs. X-ray diffraction (XRD) analysis revealed that in all solved structures, there is a network of short intermolecular contacts between H-Arom atoms and N atoms of cyano groups. The supramolecular structure of these contacts depends on the alkyl chain length in the aniline moiety, and changes after temperature induced phase transitions.

Selivanova G.A. , Skolyapova A.D. , Dralyuk R.I. , Karpova E.V. , Shundrina I.K. , Bagryanskaya I.Y. , Amosov E.V. , Basova T.V. , Tretyakov E.V.
Solid-phase transitions of polymorphs of 4-(4-N,N-dialkylaminophenyl) azobiphenyl-2,3 ',4 '-tricarbonitriles and their analogues
Thermochimica Acta. 2018. V.669. P.88-98. DOI: 10.1016/j.tca.2018.08.022 WOS Scopus РИНЦ

Published print:

Nov 1, 2018

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