Confocal microprobe Raman spectroscopy for investigating the aggregation process at the liquid/air interface

Citation
B. Ren et al., Confocal microprobe Raman spectroscopy for investigating the aggregation process at the liquid/air interface, CHEM P LETT, 328(1-2), 2000, pp. 17-22
Citations number
30
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
0009-2614 → ACNP
Volume
328
Issue
1-2
Year of publication
2000
Pages
17 - 22
Database
ISI
SICI code
0009-2614(20000922)328:1-2<17:CMRSFI>2.0.ZU;2-0
Abstract
The unique advantage of confocal microprobe Raman spectroscopy was used to study the aggregation process of tetrakis (p-sulfonatophenyl) porphyrin (TS PP) occurring at the liquid/air interface. For the low ionic strength solut ion, very strong Raman signals of aggregates from the liquid/air interface were detected while those were absent in the bulk solution. This is attribu ted to the increase of the interfacial concentration of aggregates and the assistance of the resonance Raman effect. For higher ionic strength solutio ns, a strong resonance Raman signal can be detected from both phases with d ifferent features which could be due to the formation of larger aggregates. (C) 2000 Published by Elsevier Science B.V.