Research output: Contribution to journal › Article › peer-review
Solid-phase transitions of polymorphs of 4-(4-N,N-dialkylaminophenyl)azobiphenyl-2,3’,4’-tricarbonitriles and their analogues. / Selivanova, G. A.; Skolyapova, A. D.; Dralyuk, R. I. et al.
In: Thermochimica Acta, Vol. 669, 10.11.2018, p. 88-98.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Solid-phase transitions of polymorphs of 4-(4-N,N-dialkylaminophenyl)azobiphenyl-2,3’,4’-tricarbonitriles and their analogues
AU - Selivanova, G. A.
AU - Skolyapova, A. D.
AU - Dralyuk, R. I.
AU - Karpova, E. V.
AU - Shundrina, I. K.
AU - Bagryanskaya, I. Yu
AU - Amosov, E. V.
AU - Basova, T. V.
AU - Tretyakov, E. V.
N1 - Publisher Copyright: © 2018 Elsevier B.V.
PY - 2018/11/10
Y1 - 2018/11/10
N2 - 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 HArom 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.
AB - 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 HArom 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.
KW - Azo dye
KW - Polymorphism
KW - Solid phase polymorphic modifications
KW - X-ray and DSC measurements
KW - AZOBENZENE DERIVATIVES
KW - DYES
KW - NONLINEAR-OPTICAL PROPERTIES
KW - AZO
KW - CHROMOPHORES
KW - COMPLEXES
UR - http://www.scopus.com/inward/record.url?scp=85053811771&partnerID=8YFLogxK
U2 - 10.1016/j.tca.2018.08.022
DO - 10.1016/j.tca.2018.08.022
M3 - Article
AN - SCOPUS:85053811771
VL - 669
SP - 88
EP - 98
JO - Thermochimica Acta
JF - Thermochimica Acta
SN - 0040-6031
ER -
ID: 16703067