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                            Library & Multimedia
 Mercaptopyridine Surface-Functionalized CdTe Quantum Dots with Enhanced Raman Scattering Properties
NCJ Number
              255342
Journal

*Journal of Physical Chemistry C* Volume: 112 Dated: 2008 Pages: 996-1000
Author(s)
          Yanfei Wang;
                        Junhu Zhang;
                        Huiying Jia;
                        Minjie Li;
                        Jianbo Zeng;
                        Bai Yang;
                        Bing Zhao;
                        Weiqing Xu;
                        John R. Lombardi
Date Published

2008
Length
              5 pages
Annotation
              This article reports on a project that concluded 3 nm diameter CdTe quantum dots can generate enhanced Raman scattering.
Abstract
              It was determined that the Raman signal of 4-mercaptopyridine (4-Mpy) adsorbed on CdTe quantum dots shows a 104 enhancement compared with that of bulk 4-Mpy. The enhanced phenomenon based on CdTe quantum dots also provides new insight to help understand the enhancement mechanism. A charge-transfer mechanism is most likely responsible for the observed enhancement, since plasmon resonances are ruled out. This study points to the possibility of using quantum dots, with chemisorption in some important practical systems, such as the application of quantum dots as nanosized building blocks and markers in biological imaging. (publisher abstract modified)
      
  
          Additional Details
Grant Number(s)
        2006-DN-BX-K034


  
  
        
  Agencies
        NIJ-Sponsored


  
  
        
  Award
        Development of Advanced Raman Spectroscopy Methods and Databases for the Evaluation of Trace Evidence and the Examination of Questioned Documents
    
  
  
Date Published: January 1, 2008
    
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