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Spectroscopic evidence for adsorption-induced polymerisation of terthiophene at silver surfaces

被引：15
作者：
Compagnini, G
De Bonis, A
Cataliotti, RS
Marletta, G
机构：
[1] Univ Catania, Dipartimento Sci Chim, I-95125 Catania, Italy
[2] Univ Perugia, Dipartimento Chim, I-06100 Perugia, Italy
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2000年 / 2卷 / 22期
关键词：
D O I：
10.1039/b005892k
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：
The adsorption process of 2,2':2',5″-terthiophene molecules on two different types of silver surfaces was studied by means of surface enhanced Raman scattering (SERS) and UV-Vis absorption spectroscopy. Both techniques support the hypothesis of an adsorption-induced polymerisation process of these molecules. The vibrational pattern of the chemisorbed layer was found to be almost identical with that of bulk polythiophene samples and a red shift from 3.5 to 2.5 eV of the electronic absorption is observed in agreement with the Kuhn-Kuhn model. A concomitant decrease in visible photoluminescence was also observed.
引用
收藏
页码：5298 / 5301
页数：4
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