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Physico-Chemical and Light-Induced Properties of Quinoline Azo-dyes Polymers

1
Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Torun, Grudziadzka 5, 87-100 Torun, Poland
2
Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska St., 01601 Kyiv, Ukraine
3
Institute of Mathematics and Physics, UTP University of Science and Technology, S. Kaliskiego 7, 85-796 Bydgoszcz, Poland
4
Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
5
Faculty of Physics, Warsaw University of Technology, 75 Koszykowa Str., 00-662 Warszawa, Poland
6
Sieć Badawcza Łukasiewicz-Instytut Technologii Elektronowej, Al. Lotnikow 32/46, 02-668 Warszawa, Poland
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2020, 21(16), 5755; https://doi.org/10.3390/ijms21165755
Received: 15 July 2020 / Revised: 1 August 2020 / Accepted: 8 August 2020 / Published: 11 August 2020
(This article belongs to the Section Materials Science)
We present investigation of optical and photochromic properties as well as of surface quality of thin films of novel methacrylic polymers with 8-hydroxyquinoline azo-dyes in side-chain. Additionally, thermal stability of polymer powders was examined and their glass transition temperature was determined. Optical properties (extinction coefficient and refractive index) were determined by spectroscopic ellipsometry (SE) combined with absorbance measurements. Photoresponsive behavior was investigated by determination of photoisomerization rates under irradiation with unpolarized 365 nm light, as well as by conduction of holographic grating inscription experiment. Thin film quality was determined by atomic force microscopy (AFM) measurements. Thermal analysis was performed by thermogravimetric (TG), derivative thermogravimetric (DTG) and differential scanning calorimetry (DSC) measurements. We found that optical properties as well as photoisomerization rates of investigated polymers are dependent on the substituent in the para position of the phenyl ring. Surface relief grating inscription was successfully generated only for materials with chromophores containing dimethylamino (N(CH3)2) and methyl (CH3) substituents, but all materials exhibited birefringence grating in the bulk. Surface of most thin films was very smooth, but its quality was impaired by neutral (H) as well as carboxyl (COOH) substituent. Thermal stability of copolymers with side-chain chromophores was improved compared to pure poly(methyl methacrylate) (PMMA). View Full-Text
Keywords: quinoline azo-dye polymers; optical properties; refractive index; surface relief grating; AFM; photoisomerization quinoline azo-dye polymers; optical properties; refractive index; surface relief grating; AFM; photoisomerization
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MDPI and ACS Style

Chomicki, D.; Kharchenko, O.; Skowronski, L.; Kowalonek, J.; Kozanecka-Szmigiel, A.; Szmigiel, D.; Smokal, V.; Krupka, O.; Derkowska-Zielinska, B. Physico-Chemical and Light-Induced Properties of Quinoline Azo-dyes Polymers. Int. J. Mol. Sci. 2020, 21, 5755. https://doi.org/10.3390/ijms21165755

AMA Style

Chomicki D, Kharchenko O, Skowronski L, Kowalonek J, Kozanecka-Szmigiel A, Szmigiel D, Smokal V, Krupka O, Derkowska-Zielinska B. Physico-Chemical and Light-Induced Properties of Quinoline Azo-dyes Polymers. International Journal of Molecular Sciences. 2020; 21(16):5755. https://doi.org/10.3390/ijms21165755

Chicago/Turabian Style

Chomicki, Dariusz; Kharchenko, Oksana; Skowronski, Lukasz; Kowalonek, Jolanta; Kozanecka-Szmigiel, Anna; Szmigiel, Dariusz; Smokal, Vitalii; Krupka, Oksana; Derkowska-Zielinska, Beata. 2020. "Physico-Chemical and Light-Induced Properties of Quinoline Azo-dyes Polymers" Int. J. Mol. Sci. 21, no. 16: 5755. https://doi.org/10.3390/ijms21165755

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