Photoinduced Heating of Thin Nitrogen-Polymer Films

被引：0

作者：

Chernykh, E. A. ^{[1
]}

Kharintsev, S. S. ^{[1
,2
]}

Edrisov, A. T. ^{[3
]}

Khrustalev, D. P. ^{[3
]}

机构：

[1] Kazan Fed Univ, Kazan 420008, Russia

[2] Tatarstan Acad Sci, Inst Appl Res, Kazan 420111, Russia

[3] Nazarbayev Univ, Astana 010000, Kazakhstan

来源：

UCHENYE ZAPISKI KAZANSKOGO UNIVERSITETA-SERIYA FIZIKO-MATEMATICHESKIE NAUKI | 2018年 / 160卷 / 01期

关键词：

atomic force microscopy; thin films; polymer films; glass transition temperature; photoinduced heating; azo-polymers; azo-chromophores;

D O I：

暂无

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

In this work, the photo-induced heating of polymer films functionalized with azo-chromophore molecules has been studied for the first time. We have characterized the photoinduced heating of free-standing thin films with the use of scanning thermal microscopy with nanometer resolution. It has been shown that the film of 800 nm thickness being irradiated by resonant laser radiation (532 nm) and the power of 25 mW/cm(2) is heated by 1.7 K. Furthermore, a method has been introduced for determining the glass transition temperature of thin (<100 nm) polymer films based on thermo-induced atomic force microscopy (thermalassisted AFM). In the proposed approach, the change of the phase of oscillating AFM cantilever has been used to determine the glass transition temperature. An anomalous decrease in the glass transition temperature has been shown for both free-standing and supported azobenzene-functionalized polymeric thin films.

引用

页码：145 / 153

页数：9

共 18 条

[1] Light-induced motions in azobenzene-containing polymers [J].