Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 468, Issue -, Pages 252-261Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2014.12.055
Keywords
Polydiacetylene; Color stability; Thermochromism; Polymer matrices; Organic media; Thin films
Categories
Funding
- RD&E Funding, National Science and Technology Development Agency (NSTDA) of Thailand [P-12-01411]
- 90th Anniversary of Chula-longkorn University Fund (Ratchadaphiseksomphot Endowment Fund)
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University
- Nanotechnology Center (NANOTEC), Ministry of Science and Technology, Thailand
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Polydiacetylene (PDA)-based materials exhibit color transition when subjected to external stimuli, making them attractive for sensing technology. The utilization of PDA-based materials can be largely extendedby fabricating in different polymer matrices, which normally involves organic solvents as media. Recently, our group has developed PDA/zinc oxide (ZnO) nanocomposites, exhibiting reversible thermochromismin aqueous medium. In this contribution, we demonstrate that the PDA/ZnO nanocomposite can bedispersed in various organic solvents including 1,2-dichlorobenzene, chlorobenzene, toluene, ethanol, butanol, hexanol, chloroform and tetrahydrofuran. The color of pure PDA changes from blue to red inthese solvents while the PDA/ZnO nanocomposite remains blue after 30 days. The color reversibility andcolortransition temperature of the PDA/ZnO nanocomposite are hardly affected in these organic solventscompared to the system of aqueous medium. We further demonstrate that the PDA/ZnO nanocomposite can be embedded in common polymer matrices such as poly(styrene), poly(methyl methacrylate), poly(ethylene) and poly(vinyl alcohol) by using a simple mixing process. We have found that colorreversibility of the PDA/ZnO nanocomposite depends on property of the polymer matrices and persists upto about 200 degrees C in some systems. The ability to prepare PDA-based materials in different organic solventsand polymer matrices is very important for their utilization in various applications. (C) 2015 Elsevier B.V. All rights reserved.
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