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학술지 Preparation and Characterization of a Triple Layered Au-PMMA-PbSe Hybrid Nanocomposite: Manipulation of PMMA Spacer Layer by Oxygen Plasma Etching
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저자
김완중, 최제봉, 김상희, 김애란, 유동진
발행일
201508
출처
Bulletin of the Korean Chemical Society, v.36 no.8, pp.1966-1973
ISSN
0253-2964
출판사
대한화학회 (KCS), Wiley
DOI
https://dx.doi.org/10.1002/bkcs.10379
초록
A hybrid triple-layered nanocomposite structure of plasmonic gold (Au), polymethylmethacrylate (PMMA), and lead selenide (PbSe) quantum dot (QD) on quartz substrate was developed. The fabricated nanocomposite exhibited well-established triple-layered morphology (Au-PMMA-QD on quartz), but had different coupling distances between Au, on the bottom, and PbSe QD, on the top. Control of the coupling distances in terms of different thicknesses of a PMMA spacer layer was examined by etching for different durations, from 7 to 30 min. The corresponding thicknesses of the PMMA layer ranged from ~3.8 to ~88 nm at an etching rate of 2 nm/min. Atomic force microscopy measurements showed that the well-established triple-layered hybrid nanocomposite structure had the heights of ~15 nm (Au) and ~4 nm (PbSe QD). X-ray photoelectron spectroscopy results revealed the characteristic peaks assigned to each nanoparticle and polymer layer. The results illustrated the triple-layered structures with different PMMA spacer layers, with no cross interference between the layers.
키워드
Lead selenide quantum dots, Nanocomposite, Oxygen plasma etching, Plasmonic gold nanoparticle, Polymer spacer
KSP 제안 키워드
5 nm, Atomic force microscope(AFM), Cross interference, Different thicknesses, Layered hybrid, Layered morphology, Layered nanocomposite, Layered structure, Lead selenide, Oxygen plasma etching, Quartz substrate