中国物理B ›› 2001, Vol. 10 ›› Issue (13): 59-64.

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

SURFACE CAPPING OF TiO2 COLLOIDAL NANOPARTICLES STUDIED BY FOURIER TRANSFORM RAMAN SPECTRA

汪昕1, 陆祖宏1, 邓慧华2, 郁清3, 毛海舫4, 铃木敏重5   

  1. (1)Chien-Shiung WU Laboratory, Southeast University, Nanjing 210096, China; (2)Chien-Shiung WU Laboratory, Southeast University, Nanjing 210096, China; Tohoku National Industrial Institute, Agency of Industrial Science and Technology, MITI, Sendai 983-8551, Japan; (3)Institute of Chemistry & Chemical-Engineering Intermediate Chemistry Laboratory, Nanjing University, Nanjing 210093, China; (4)Shanghai Institute of Organic Chemistry, The Chinese Academy of Sciences, Shanghai 200032, China; (5)Toh
  • 收稿日期:2001-01-01 出版日期:2001-11-20 发布日期:2001-11-20
  • 基金资助:
    Project supported by the Senior Visiting Scholarship Foundation of Key Laboratory in Advanced University of Ministry of Education, China and partly by the National Natural Science Foundation of China under Grant Nos. 61525102 and 69371032).

SURFACE CAPPING OF TiO2 COLLOIDAL NANOPARTICLES STUDIED BY FOURIER TRANSFORM RAMAN SPECTRA

Wang Xin (邓慧华)a, Lu Zu-hong (汪昕)a, Deng Hui-hua (郁清)b, Yu Tsing (毛海舫)c, Mao Hai-fang (铃木敏重)d, Suzuki Toshishige (陆祖宏)5   

  1. a Chien-Shiung WU Laboratory, Southeast University, Nanjing 210096, China; b Chien-Shiung WU Laboratory, Southeast University, Nanjing 210096, China; Tohoku National Industrial Institute, Agency of Industrial Science and Technology, MITI, Sendai 983-8551, Japan; c Institute of Chemistry & Chemical-Engineering Intermediate Chemistry Laboratory, Nanjing University, Nanjing 210093, China; d Shanghai Institute of Organic Chemistry, The Chinese Academy of Sciences, Shanghai 200032, China; (5)Toh
  • Received:2001-01-01 Online:2001-11-20 Published:2001-11-20
  • Supported by:
    Project supported by the Senior Visiting Scholarship Foundation of Key Laboratory in Advanced University of Ministry of Education, China and partly by the National Natural Science Foundation of China under Grant Nos. 61525102 and 69371032).

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摘要： Surface capping of TiO2 colloid nanoparticles with tetrasulfonated gallium phthalocyanine chloride (GaTsPc) was studied by Fourier Transform (FT) Raman spectra. A striking FT-Raman signal enhancement of GaTsPc is observed, indicating that a surface complex is formed during surface capping of GaTsPc dye molecules on TiO2 colloid via sulfonate groups. This effect is attributed to a strong Raman resonance with the charge transfer transition in the surface complex. Surface complexation also have considerable influences on the FT-Raman signals for TiO2 nanoparticles.

Abstract: Surface capping of TiO2 colloid nanoparticles with tetrasulfonated gallium phthalocyanine chloride (GaTsPc) was studied by Fourier Transform (FT) Raman spectra. A striking FT-Raman signal enhancement of GaTsPc is observed, indicating that a surface complex is formed during surface capping of GaTsPc dye molecules on TiO2 colloid via sulfonate groups. This effect is attributed to a strong Raman resonance with the charge transfer transition in the surface complex. Surface complexation also have considerable influences on the FT-Raman signals for TiO2 nanoparticles.

Key words: surface modification, enhancement effect, colloidal nanoparticle, fourier transform raman spectra

中图分类号: 

  • 7380