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Surface-enhanced Raman scattering of TSPP, Ag(II)TSPP, and Pb(II)TSPP adsorbed on AgI and AGCl colloids

1991; Pergamon Press; Volume: 47; Issue: 11 Linguagem: Inglês

10.1016/0584-8539(91)80253-f

1873-3824

Chunbo Mou, Dongming Chen, Xiuyan Wang, Baozhong Zhang, Tian‐Jing He, Houwen Xin, Fan-Chen Liu,

Surface Chemistry and Catalysis

Surface-enhanced Raman scattering (SERS) was measured for meso-tetrakis(4-sulfonatophenyl)porphine (TSPP) and its metal derivatives Ag(II)TSPP and Pb(II)TSPP adsorbed on AgI colloids, and for TSPP adsorbed on AgCl colloids. The experiments show that TSPP molecules adsorbed on AgI colloids undergo a silver incorporation, while TSPP adsorbed on AgCl colloids are converted into the porphyrin diacid H4TSPP2+ and the metalloporphyrin Ag(II)TSPP. The concentration dependences of SERS spectra for TSPP adsorbed on the two substrates are quite different.