KFU. Card publication. Photoinduced Heating of Freestanding Azo-Polymer Thin Films Monitored by Scanning Thermal Microscopy

KAZAN
FEDERAL UNIVERSITY

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PHOTOINDUCED HEATING OF FREESTANDING AZO-POLYMER THIN FILMS MONITORED BY SCANNING THERMAL MICROSCOPY

Form of presentation

Articles in international journals and collections

Year of publication

2017

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Authors, employees of KFU

Saykin Semen Konstantinovich, author

Salakhov Myakzyum Khalimulovich, author

Fishman Aleksandr Izrailovich, author

Kharincev Sergey Sergeevich, author

Other authors

Alekseev Aleksandr Mikhaylovich, author

Authors, students KFU

Chernykh Elena Aleksandrovna, author

Bibliographic description in the original language

Kharintsev S.S., Chernykh E.A. , Fishman A.I., Saikin S.K., Alekseev A.M., and Salakhov M.Kh., Photoinduced Heating of Freestanding Azo-Polymer Thin Films Monitored by Scanning Thermal Microscopy, J. Phys. Chem. C, 2017, 121 (5), pp 3007–3012

Annotation

Despite numerous attempts to capture a temperature rise in azobenzene-functionalized polymer thin films exposed to laser irradiation, so far no attention has been paid to direct temperature measurements. Here, we characterize a photoinduced heating of freestanding thin films using nanoscale resolution scanning thermal microscopy. The polymer films under study are composed of epoxy-based oligomers with chemically attached nitroazobenzene chromophores. A temperature change of 1.7 K only is observed when an 800 nm thick film is subject to resonant 532 nm illumination with a modest intensity of 25 mW/cm2. A freestanding and glass substrate supported 20 nm azo-polymer films exhibit an anomalous depression of the glass transition temperature by approximately 80 and 70 K, respectively, that is probed with thermally assisted atomic force microscopy. Our results show that the photoinduced heating can negatively affect an ordered state of the azo dyes within the polymer ultrathin film (<100 nm)

Keywords

photo-induced heating, scanning thermal microscopy, glass transition temperature

The name of the journal

J. Phys. Chem. C

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=151848&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Saykin Semen Konstantinovich	ru_RU
dc.contributor.author	Salakhov Myakzyum Khalimulovich	ru_RU
dc.contributor.author	Fishman Aleksandr Izrailovich	ru_RU
dc.contributor.author	Kharincev Sergey Sergeevich	ru_RU
dc.contributor.author	Alekseev Aleksandr Mikhaylovich	ru_RU
dc.contributor.author	Chernykh Elena Aleksandrovna	ru_RU
dc.date.accessioned	2017-01-01T00:00:00Z	ru_RU
dc.date.available	2017-01-01T00:00:00Z	ru_RU
dc.date.issued	2017	ru_RU
dc.identifier.citation	Kharintsev S.S., Chernykh E.A. , Fishman A.I., Saikin S.K., Alekseev A.M., and Salakhov M.Kh., Photoinduced Heating of Freestanding Azo-Polymer Thin Films Monitored by Scanning Thermal Microscopy, J. Phys. Chem. C, 2017, 121 (5), pp 3007–3012	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=151848&p_lang=2	ru_RU
dc.description.abstract	J. Phys. Chem. C	ru_RU
dc.description.abstract	Despite numerous attempts to capture a temperature rise in azobenzene-functionalized polymer thin films exposed to laser irradiation, so far no attention has been paid to direct temperature measurements. Here, we characterize a photoinduced heating of freestanding thin films using nanoscale resolution scanning thermal microscopy. The polymer films under study are composed of epoxy-based oligomers with chemically attached nitroazobenzene chromophores. A temperature change of 1.7 K only is observed when an 800 nm thick film is subject to resonant 532 nm illumination with a modest intensity of 25 mW/cm2. A freestanding and glass substrate supported 20 nm azo-polymer films exhibit an anomalous depression of the glass transition temperature by approximately 80 and 70 K, respectively, that is probed with thermally assisted atomic force microscopy. Our results show that the photoinduced heating can negatively affect an ordered state of the azo dyes within the polymer ultrathin film (<100 nm)	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	photo-induced heating	ru_RU
dc.subject	scanning thermal microscopy	ru_RU
dc.subject	glass transition temperature	ru_RU
dc.title	Photoinduced Heating of Freestanding Azo-Polymer Thin Films Monitored by Scanning Thermal Microscopy	ru_RU
dc.type	Articles in international journals and collections	ru_RU