Abstract
Evanescent wave induced fluorescence spectroscopy and time-correlated single-photon counting have been combined to provide a method of studying the fluorescence decay profiles of fluorophores at a solid/solution interface. Using these techniques the photophysical properties of tetrasulphonated aluminium phthalocyanine (AlS4Pc) in methanol and water solution have been studied at a fused silica interface. In a poor solvent, such as methanol, AlS4Pc is shown to form an adsorbed monolayer on the fused silica surface and exhibit a fluorescence decay profile that deviates from the simple, first-order, single-exponential kinetics of the bulk solution. By changing the solvent to water, which is a good solvent for AlS4Pc, the surface/bulk differences are not observed. The ability of time-resolved fluorescence spectroscopy to distinguish between concentration and quantum-yield effects on evanescent wave induced fluorescence intensity, is clearly demonstrated.
| Original language | English |
|---|---|
| Pages (from-to) | 825-830 |
| Number of pages | 6 |
| Journal | Journal of the Chemical Society - Faraday Transactions |
| Volume | 87 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1991 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
Cite this
Time-resolved evanescent wave induced fluorescence spectroscopy : Part 1. - Deviations in the fluorescence lifetime of tetrasulphonated aluminium phthalocyanine at a fused silica/methanol interface. / Rumbles, Gary; Brown, Alan J.; Phillips, David.
In: Journal of the Chemical Society - Faraday Transactions, Vol. 87, No. 6, 1991, p. 825-830.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Time-resolved evanescent wave induced fluorescence spectroscopy
T2 - Part 1. - Deviations in the fluorescence lifetime of tetrasulphonated aluminium phthalocyanine at a fused silica/methanol interface
AU - Rumbles, Gary
AU - Brown, Alan J.
AU - Phillips, David
PY - 1991
Y1 - 1991
N2 - Evanescent wave induced fluorescence spectroscopy and time-correlated single-photon counting have been combined to provide a method of studying the fluorescence decay profiles of fluorophores at a solid/solution interface. Using these techniques the photophysical properties of tetrasulphonated aluminium phthalocyanine (AlS4Pc) in methanol and water solution have been studied at a fused silica interface. In a poor solvent, such as methanol, AlS4Pc is shown to form an adsorbed monolayer on the fused silica surface and exhibit a fluorescence decay profile that deviates from the simple, first-order, single-exponential kinetics of the bulk solution. By changing the solvent to water, which is a good solvent for AlS4Pc, the surface/bulk differences are not observed. The ability of time-resolved fluorescence spectroscopy to distinguish between concentration and quantum-yield effects on evanescent wave induced fluorescence intensity, is clearly demonstrated.
AB - Evanescent wave induced fluorescence spectroscopy and time-correlated single-photon counting have been combined to provide a method of studying the fluorescence decay profiles of fluorophores at a solid/solution interface. Using these techniques the photophysical properties of tetrasulphonated aluminium phthalocyanine (AlS4Pc) in methanol and water solution have been studied at a fused silica interface. In a poor solvent, such as methanol, AlS4Pc is shown to form an adsorbed monolayer on the fused silica surface and exhibit a fluorescence decay profile that deviates from the simple, first-order, single-exponential kinetics of the bulk solution. By changing the solvent to water, which is a good solvent for AlS4Pc, the surface/bulk differences are not observed. The ability of time-resolved fluorescence spectroscopy to distinguish between concentration and quantum-yield effects on evanescent wave induced fluorescence intensity, is clearly demonstrated.
UR - http://www.scopus.com/inward/record.url?scp=0000076863&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000076863&partnerID=8YFLogxK
U2 - 10.1039/FT9918700825
DO - 10.1039/FT9918700825
M3 - Article
AN - SCOPUS:0000076863
VL - 87
SP - 825
EP - 830
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
SN - 1463-9076
IS - 6
ER -