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  • 02월 22일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

Ag Nanoaggregates-Induced Raman Scattering for Surface Analysis of Polymer Films

등록일
2008년 2월 11일 13시 07분 49초
접수번호
0282
발표코드
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발표시간
목 <발표Ⅰ>
발표형식
포스터
발표분야
물리화학
저자 및
공동저자
류현우, 신권수1, 김관
서울대학교 화학부,
1숭실대학교 화학과,
Many approaches can be applied to studies of molecular vibrations on surfaces and thin films, but it is extremely difficult to get information specifically on monolayered films. There is at least one very exception to this. This is the case when molecules adsorbed on nanostructured gold and silver surfaces exhibit a phenomenon known as surface-enhanced Raman scattering (SERS). We demonstrate in this work that surface Raman spectra can be obtained for polymer films by forming Ag nanoaggregates onto them. This differs from the conventional method of producing SERS-active samples where the analyte polymer is deposited onto a SERS active substrate, an approach that can only give a SERS spectrum of the buried metal-polymer interface. The present technique makes it possible to study the outermost, pre-existing surface of the polymer. We obtained a SERS spectrum of the external surface of poly(4-vinylpyridine) using this method. The formation parameters of the silver nanoparticles were adjusted to optimize the SERS intensity of poly(4-vinylpyridine).

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