| 학회 |
한국공업화학회 |
| 학술대회 |
2009년 가을 (10/15 ~ 10/16, 서울산업대학교 내 서울테크노파크) |
| 권호 |
13권 2호 |
| 발표분야 |
고분자(포스터) |
| 제목 |
Thermochromic Reversibility in Ultrasensitive Polydiacetylene Supramolecules |
| 초록 |
We report here on the thermochromic properties of conjugated polydiacetylene (PDA) supramolecules derived from the lithium salt of 10,12-pentacosadiynoic acid (PCDA). A homogeneous solution was obtained upon heating an aqueous solution of PCDA and lithium acetate to 60 oC. Cooling this solution to room temperature yielded white Li-PCDA as the precipitate. Thus synthesized Li-PCDA was extremely sensitive to UV irradiation; blue PDA could be obtained with just one second of UV treatment (254 nm, 1 mJ/cm2). More interestingly, the PDA supramolecules obtained from Li-PCDA exhibited reversible thermochromism. An irradiated blue PDA film changed to red on heating, and regained the original blue color upon removal of the heat source. |
| 저자 |
이수미, Sangeetha Balakrishnan, 김종만
|
| 소속 |
한양대 |
| 키워드 |
Polydiacetylene; PDA; sensor
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| E-Mail |
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