| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 봄 (04/10 ~ 04/12, 부산컨벤션센터(BEXCO)) |
| 권호 |
44권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Controlled Phase Separation in Poly(p-phenyleneethynylene) Thin Films and its Relationship to Vapor Sensing Properties |
| 초록 |
Herein, we report synthesis and mesoporous film formation of hydrophobic poly(p-phenyleneethynylene)s (PPEs) and present porosity-dependent quenching studies using 1,3,5-trinitrotoluene (TNT) vapors. Non-solvent vapor-induced phase separation (NVIPS) was used to induce pore formation during film casting, and the concentration of PPEs solution was controlled carefully to fabricate different film thickness. We found that the structure of the sidechains of the PPEs strongly influence the range of the relative humidity at which controlled pore generation occurs, which could be rationalized from interfacial energies calculated from contact angle measurements. Porosity of the PPE films resulted in increased efficiency of fluorescence quenching towards TNT vapor. The control of the porous structure as well as film thickness constitutes a promising strategy for enhancing the efficiency of chemosensor and in more general applications requiring fine-tuned polymer-gas interactions. |
| 저자 |
김도완1, 함동효1, 권순형1, 임지우2, 차국헌1
|
| 소속 |
1서울대, 2경희대 |
| 키워드 |
poly(p-phenyleneethynylene; mesoporous film; chemosensor
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| E-Mail |
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