Enhancement of surface phonon modes in the Raman spectrum of ZnSe nanoparticles on adsorption of 4-mercaptopyridine

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NCJ Number
304239
Journal
Journal of Chemical Physics Volume: 140 Issue: 7 Dated: February 2014
Author(s)
SYED K. ISLAM
JOHN R. LOMBARDI
Date Published
2014
Annotation

This article reports that by chemically etching a thin film of crystalline ZnSe with acid, the authors observed a strong Raman enhancement of the surface phonon modes of ZnSe on adsorption of a molecule (4-mercaptopyridine).

Abstract

The surface is composed of oblate hemi-ellipsoids, which has a large surface-to-bulk ratio. The assignment of the observed modes (at 248 and 492 cm−1) to a fundamental and first overtone of the surface optical mode is consistent with observations from high-resolution electron energy loss spectroscopy as well as calculations. (publisher abstract modified)

Grant Number(s)
2009-DN-BX-K185
Agencies
NIJ-Sponsored
Publication Type
Research (Applied/Empirical)
Award
Development Of Advanced Raman Spectroscopy Methods And Databases For The Evaluation Of Trace Evidence And The Examination Of Questioned Documents-Phase II
Date Published: January 1, 2014

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