Refractive index engineering of transparent ZrO2-polydimethylsiloxane nanocomposites
- Authors
- Lee, Sangkyu; Shin, Hyeon-Jin; Yoon, Seon-Mi; Yi, Dong Kee; Choi, Jae-Young; Paik, Ungyu
- Issue Date
- Feb-2008
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY, v.18, no.15, pp.1751 - 1755
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY
- Volume
- 18
- Number
- 15
- Start Page
- 1751
- End Page
- 1755
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/178980
- DOI
- 10.1039/b715338d
- ISSN
- 0959-9428
- Abstract
- Transparent ZrO2-polydimethylsiloxane (PDMS) nanocomposites with high refractive index were prepared by dispersing ZrO2 nanoparticles in a PDMS matrix via ligand molecule engineering. The ligand molecule consists of a diamine head group that adsorbs strongly onto the ZrO2 nanoparticles, and a siloxane tail group with a double-tailed structure that can be easily stretched within the PDMS matrix and yields a greater steric hindrance compared to single-tailed structure. The transmission electron micrograph shows that the designed Si-based ligand molecule has a role to play in keeping ZrO2 nanoparticles fully-dispersed even after the ZrO2 nanoparticles were transferred into the PDMS matrix. UV-vis spectra indicate that ZrO2-PDMS nanocomposite had a high transparency of 93.3% in the whole visible range. The refractive index of the ZrO2-PDMS nanocomposite could be varied from 1.39 to 1.65 simply by increasing the ZrO2 content from 0 to 20.8% v/v.
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