Construction and Molecular Understanding of an Unprecedented, Reversibly Thermochromic Bis-Polydiacetylene
- Authors
- Lee, Songyi; Lee, Joonseong; Lee, Minji; Cho, Yu Kyung; Baek, Junwoo; Kim, Jinwook; Park, Sungnam; Kim, Myung Hwa; Chang, Rakwoo; Yoon, Juyoung
- Issue Date
- 6월-2014
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- polydiacetylenes; PDA sensors; thermochromic sensors; theoretical simulations; transient absorption spectroscopy
- Citation
- ADVANCED FUNCTIONAL MATERIALS, v.24, no.24, pp.3699 - 3705
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED FUNCTIONAL MATERIALS
- Volume
- 24
- Number
- 24
- Start Page
- 3699
- End Page
- 3705
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/98361
- DOI
- 10.1002/adfm.201304147
- ISSN
- 1616-301X
- Abstract
- A new type of bis-PDA, in which two PDAs are linked via an intervening p-phenylene group, is developed. The Bis-PDA-Ph displays exceptional thermochromic reversibility owing to the presence of unique hydrophobic interactions between alkyl chains as well as aryl moieties. The Bis-PDA-Ph has a well-packed structure that causes it to display a clear blue to red colorimetric transition at elevated temperatures. To elucidate the molecular origin of the thermochromic response, a theoretical simulation of the new PDA, the results of which successfully explain the thermochromic reversibility phenomenon, is conducted. Furthermore, Bis-PDA-Ph-embedded polymer fibers are used as a thermochromic sensor material. It displays excellent reversibility between 20-120 degrees C, which is the largest temperature range reported thus far for PDA based sensors. Finally, transient absorption spectroscopy is employed for the first time to analyze the temperature-dependent fluorescence change of the new PDA.
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