Influence of supramolecular interactions on photoresponsive behavior of azobenzene poly(amide imide)s

Anna Kozanecka-Szmigiel , J. Konieczkowska , Krzysztof Świtkowski , Jerzy Antonowicz , B. Trzebicka , D. Szmigiel , E. Schab-Balcerzak

Abstract

This study presents the comparison between the photoresponsive behavior of a series of six poly(amide imide)s bearing azobenzene-derivative chromophores as side groups. The solubility, molecular weight, glass transition temperature and thermal stability of the polymers are reported. The chosen azopolymers contain one or two azochromophores in the repeating units attached to the main chain at different locations, i.e., one of the aromatic cores of azobenzene is a part of backbone connected in the 2 and 4 position with either the amide or/and imide groups. UV-vis spectroscopy shows that the chromophore position affects the polymer absorption band. The photoinduced birefringence measurements reveal large differences in the photoresponsive behavior of the materials. The birefringence of order of 0.02 and 0.05 is achieved for the polymers of moderate molecular weight containing one azo-dye per structural unit attached between the amide groups or for the polymers with two chromophores per structural unit placed between both the amide and imide groups, respectively. The lack of optical anisotropy is observed for the polymers of a low molecular weight containing the azochromophores located between the imide groups, indicating a very low efficiency of the trans-cis isomerization process in these materials. The explanation of the observed relationship based on H-bond formation is confirmed by FTIR and 1H NMR analysis. © 2015 Elsevier B.V. All rights reserved.
Author Anna Kozanecka-Szmigiel (FP / SRD)
Anna Kozanecka-Szmigiel,,
- Structural Research Division
, J. Konieczkowska - [Center of Polymer and Carbon Materials of the Polish Academy of Sciences]
J. Konieczkowska,,
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, Krzysztof Świtkowski (FP / SRD)
Krzysztof Świtkowski,,
- Structural Research Division
, Jerzy Antonowicz (FP / SD)
Jerzy Antonowicz,,
- Semiconductors Division
, B. Trzebicka - [Center of Polymer and Carbon Materials of the Polish Academy of Sciences]
B. Trzebicka,,
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, D. Szmigiel - [Instytut Technologii Elektronowej]
D. Szmigiel,,
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, E. Schab-Balcerzak - [University of Silesia (UŚ)]
E. Schab-Balcerzak,,
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- Uniwersytet Śląski w Katowicach
Journal seriesJournal of Photochemistry and Photobiology A-Chemistry, ISSN 1010-6030
Issue year2016
Vol318
Pages114-123
Publication size in sheets0.5
ASJC Classification3100 General Physics and Astronomy; 1500 General Chemical Engineering; 1600 General Chemistry
DOIDOI:10.1016/j.jphotochem.2015.12.010
URL http://www.scopus.com/inward/record.url?eid=2-s2.0-84952342513&partnerID=40&md5=5b62752c1d4806a4147abe71261a98eb
Languageen angielski
File
kozanecka2015jop.pdf 1.64 MB
Score (nominal)25
Score sourcejournalList
ScoreMinisterial score = 25.0, 10-06-2020, ArticleFromJournal
Ministerial score (2013-2016) = 25.0, 10-06-2020, ArticleFromJournal
Publication indicators Scopus Citations = 16; WoS Citations = 11; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 0.863; WoS Impact Factor: 2016 = 2.625 (2) - 2016=2.493 (5)
Citation count*18 (2020-08-19)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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