| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 가을 (10/09 ~ 10/10, 일산킨텍스) |
| 권호 |
33권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Thin Films of Self-assembled PS-b-PEO Diblock Copolymer Micelles Containing CdS and TiO2 Nanoparticles:Morphology and Photocatalytic Studies |
| 초록 |
The self-assembly of inorganic nanoparticle/block copolymer (BCP) hybrid systems has been extensively studied in recent years. Herein, we engineered CdS and TiO2 within PS-b-PEO block copolymer (SEO) thin films. Hydrophobically modified CdS nanoparticles were synthesized using a modified kinetic-trapping method and TiO2 was synthesized by sol-gel process. The CdS and TiO2 nanoparticles were distributed in PS and PEO domains, respectively, of a micellar solution of PS-b-PEO block copolymer. The addition of CdS quantum dot into BCP/TiO2 sol-gel mixture changes the morphology from mixed wire/hexagonal packing to complete ordered hexagonal packing arrangement. UV-Vis studies showed an enhanced and red shifted absorption of CdS/TiO2-SEO with increasing the concentration of CdS. Photoluminescence studies showed a quenching of CdS emission in the presence of TiO2. An enhanced photocatalytic degradation of methylene blue has been observed in the case of CdS/TiO2-SEO thin film. |
| 저자 |
Dinakaran Kannaiyan1, 김동하2
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| 소속 |
1Ewha Womans Univ., 2이화여자대 |
| 키워드 |
block copolymer; CdS; TiO2; photocatalyst
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| E-Mail |
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