| 학회 |
한국고분자학회 |
| 학술대회 |
2011년 봄 (04/07 ~ 04/08, 대전컨벤션센터) |
| 권호 |
36권 1호 |
| 발표분야 |
신진연구자 특별 심포지움 |
| 제목 |
Effect of the Molecular Size of Analytes on Polydiacetylene Chromism |
| 초록 |
The pH chromism of polydiacetylene is examined with respect to the molecular size and acidity of acid analytes, along with the alkyl spacer length of primary amine-functionalized diacetylene (DA) lipids. pH turns out to be an important parameter to charge amine headgroups of PDA but a change in pH does not necessarily result in PDA color change. The molecular size of acid analytes is identified as another factor that can produce a configurational change in PDA amine headgroups, followed by perturbation of the ene-yne conjugated backbone. In addition, the length of flexible alkyl spacer between the amine headgroup and the amide group of the diacetylene lipids is found to strongly affect the degree of PDA chromatic transition. The longer alkyl spacer shows a smaller chromatic transition from ‘blue phase’ to ‘red phase.’ The alkyl spacer seems to provide a certain degree of freedom to the amine headgroup, thus decreases the transfer of headgroup steric effects to the PDA backbone. |
| 저자 |
서동환1, 김형준2, 김진상1
|
| 소속 |
1Dept. of Chemical Engineering, 2Kongju Univ. |
| 키워드 |
conjugated polymers; polymeric materials; polydiacetylenes
|
| E-Mail |
|
