Aggregation of tetrakis(p-sulfonatophenyl)porphyrin within modified mesoporous MCM-41

Citation
W. Xu et al., Aggregation of tetrakis(p-sulfonatophenyl)porphyrin within modified mesoporous MCM-41, J PHYS CH B, 105(8), 2001, pp. 1543-1546
Citations number
29
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF PHYSICAL CHEMISTRY B
ISSN journal
1520-6106 → ACNP
Volume
105
Issue
8
Year of publication
2001
Pages
1543 - 1546
Database
ISI
SICI code
1520-6106(20010301)105:8<1543:AOTWMM>2.0.ZU;2-F
Abstract
We report the formation of monomeric and aggregated tetrakis(p-sulfonatophe nyl)porphyrin encapsulated within an aluminosilicate mesostructure, specifi cally MCM-41, under different pH conditions. It was necessary to stabilize the synthesized MCM-41 through use of a silylation reagent, (aminopropyl)tr iethoxysilane, which cross-links oxygen on the surface (thus rigidifying th e walls of the mesoporous material) and functionalizes the interface for pr oper guest-host interaction. XRD, UV-vis absorption, and fluorescence measu rements are used as spectroscopic tools to characterize the various product s.