Multiple functionalities of highly conductive and flexible photo- and thermal-responsive colorimetric cellulose films. Issue 1 (2nd January 2022)

• Record Type: Journal Article
• Authors: Wibowo, Anky Fitrian; Han, Joo Won; Kim, Jung Ha; Prameswati, Ajeng; Park, Jihyun; Aisyah, Siti; Entifar, Nurmaulia; Lee, Jonghee; Kim, Soyeon; Lim, Dong Chan; Moon, Myoung-Woon; Kim, Min-Seok; Kim, Yong Hyun
• Is Part Of: Materials research letters. Volume 10:Issue 1(2022)
• Page Start: 36
• Page End: 44
• Publication Date: 2022-01-02
• Subjects: photochromic -- thermochromic -- cellulose -- spiropyran -- flexible electrodes; Materials science -- Research -- Periodicals; Biomedical materials -- Research -- Periodicals; Composite materials -- Research -- Periodicals; Biomedical materials -- Research; Composite materials -- Research; Materials science -- Research; Periodicals; 620.1105
• DOI: 10.1080/21663831.2021.2013330
• Languages: English
• ISSNs: 2166-3831

Abstract

Abstract : Photochromic materials have attracted considerable interest because of their ability to undergo reversible color switching. We report highly conductive and flexible spiropyran-embedded cellulose films with multiple optical and electrical functionalities, showing negative photo- and thermochromism. Combining silver nanowires and conductive polymer with cellulose/spiropyran films achieves a very low sheet resistance of 6.7 ohm/sq. The optimized films show outstanding mechanical stability with negligible electrical loss (resistance change < 2%) after 1000 bending cycles. The photo- and thermal-responsive conductive cellulose/spiropyran films can be used to directly visualize information and as flexible heating devices, pressure-responsive sensors, and colorimetric thermometers with high device performance. GRAPHICAL ABSTRACT: UF0001 IMPACT STATEMENT: We demonstrate highly conductive, flexible, transparent, and reversibly color-switchable films based on a spiropyran-incorporated cellulose acetate biopolymer. The films can realize high performance photoelectronics that include reversibly tunable color switching.