SURFACE ENHANCED RAMAN-SCATTERING OF BENZO[C]CINNOLINE

被引：8
|
作者：
NETO, N
NOCENTINI, M
MUNIZMIRANDA, M
SBRANA, G
机构：
[1] UNIV FLORENCE,DEPT CHEM,I-50121 FLORENCE,ITALY
[2] CNR,CTR COMPOSTI ETEROCICL,I-50121 FLORENCE,ITALY
来源：
JOURNAL OF MOLECULAR STRUCTURE | 1990年 / 218卷
关键词：
D O I：
10.1016/0022-2860(90)80304-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
SER spectra of benzo[c]cinnoline adsorbed on silver sols have been investigated and compared with previous results obtained for three diazines and 2,2′-bipyrimidine. Intense SER spectra were obtained for a very low concentration (5 × 10-5 M) of the adsorbate and the presence of a strong band in the 200-250 cm-1 region, attributed to AgN vibration, proves the relevant role of chemisorption. Unlike other diaza-aromatic molecules, SERS intensity for this molecule are not appreciably affected by the presence of NaCl. Creighton's surface selection rules, based on a vibrational assignment of benzo[c]cinnoline supported by zero order frequency calculations, suggest an "edge-on" orientation of the adsorbate on Ag particles. © 1990.
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页码：423 / 428
页数：6
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