Surfactant‐aided surface‐enhanced Raman scattering of Zn(II), Co(II), Ni(II), Cu(II) and free‐base tetrakis(4‐sulphonatophenyl)porphyrins

Ok‐Keun ‐K Song, Eun‐Joo ‐J Shin, Minyung Lee, Dongho Kim, Joo‐Tak ‐T Han, Jong‐Gi ‐G Jee, Minjoong Yoon

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Although surface‐enhanced Raman scattering (SERS) has been recognized as a powerful tool for investigating the vibrational structure of molecules, the requirement that the molecules under study should have appropriate functional groups to interact with the metal surface has been a major problem in applying the SERS effect to many chemical or biological systems. It is shown that the introduction of a surfactant such as cetyltrimethylammonium bromide in a silver sol results in a strong Raman signal enhancement of negatively charged water‐soluble metallotetrakis(4‐sulphonatophenyl)porphyrins. Without introducing CTAB into a silver sol, these porphyrin molecules did not show any colour change and consequently no SERS effect was observed. Such a surfactant‐aided SERS effect will provide the possibility of applying SERS to new molecular systems.

Original languageEnglish
Pages (from-to)667-672
Number of pages6
JournalJournal of Raman Spectroscopy
Volume23
Issue number12
DOIs
Publication statusPublished - 1992 Dec

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Spectroscopy

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