Nonlinear phosphorescence quenching mechanism of gadolinium labeled porphyrin by oxygen on filter paper

Huimin Zhao; Lixin Zang; Feng Qin; Peng Wang; Hua Zhao; Zhiguo Zhang; Wenwu Cao

doi:10.1016/j.jphotochem.2015.10.007

Nonlinear phosphorescence quenching mechanism of gadolinium labeled porphyrin by oxygen on filter paper

Huimin Zhao, Lixin Zang, Feng Qin, Peng Wang, Hua Zhao, Zhiguo Zhang, Wenwu Cao

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Nonlinear phosphorescence quenching mechanism of gadolinium labeled hematoporphyrin monomethyl ether (Gd-HMME) by oxygen on the filter paper was studied. The intensity Stern-Volmer plot was found to be approximately linear for oxygen concentration from 10% to 100%, but showing a negative curvature from 0% to 10%. The lifetime plot has similar changing trend. The intensity plot is slightly higher than the lifetime plot reflecting the existence of static quenching. The nonlinear responses were related to the nonlinear solubility of oxygen, which perfectly satisfy the nonlinear solubility model. Data analysis indicates that the static quenching rate constant is unchanged and the percentage of static quenching is about 35% ± 3% in the whole range of oxygen concentration.

Original language	English (US)
Pages (from-to)	7-11
Number of pages	5
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	316
DOIs	https://doi.org/10.1016/j.jphotochem.2015.10.007
State	Published - Feb 1 2016

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
General Physics and Astronomy

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10.1016/j.jphotochem.2015.10.007

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title = "Nonlinear phosphorescence quenching mechanism of gadolinium labeled porphyrin by oxygen on filter paper",

abstract = "Nonlinear phosphorescence quenching mechanism of gadolinium labeled hematoporphyrin monomethyl ether (Gd-HMME) by oxygen on the filter paper was studied. The intensity Stern-Volmer plot was found to be approximately linear for oxygen concentration from 10% to 100%, but showing a negative curvature from 0% to 10%. The lifetime plot has similar changing trend. The intensity plot is slightly higher than the lifetime plot reflecting the existence of static quenching. The nonlinear responses were related to the nonlinear solubility of oxygen, which perfectly satisfy the nonlinear solubility model. Data analysis indicates that the static quenching rate constant is unchanged and the percentage of static quenching is about 35% ± 3% in the whole range of oxygen concentration.",

author = "Huimin Zhao and Lixin Zang and Feng Qin and Peng Wang and Hua Zhao and Zhiguo Zhang and Wenwu Cao",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2016",

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T1 - Nonlinear phosphorescence quenching mechanism of gadolinium labeled porphyrin by oxygen on filter paper

AU - Zhao, Huimin

AU - Zang, Lixin

AU - Qin, Feng

AU - Wang, Peng

AU - Zhao, Hua

AU - Zhang, Zhiguo

AU - Cao, Wenwu

PY - 2016/2/1

Y1 - 2016/2/1

N2 - Nonlinear phosphorescence quenching mechanism of gadolinium labeled hematoporphyrin monomethyl ether (Gd-HMME) by oxygen on the filter paper was studied. The intensity Stern-Volmer plot was found to be approximately linear for oxygen concentration from 10% to 100%, but showing a negative curvature from 0% to 10%. The lifetime plot has similar changing trend. The intensity plot is slightly higher than the lifetime plot reflecting the existence of static quenching. The nonlinear responses were related to the nonlinear solubility of oxygen, which perfectly satisfy the nonlinear solubility model. Data analysis indicates that the static quenching rate constant is unchanged and the percentage of static quenching is about 35% ± 3% in the whole range of oxygen concentration.

AB - Nonlinear phosphorescence quenching mechanism of gadolinium labeled hematoporphyrin monomethyl ether (Gd-HMME) by oxygen on the filter paper was studied. The intensity Stern-Volmer plot was found to be approximately linear for oxygen concentration from 10% to 100%, but showing a negative curvature from 0% to 10%. The lifetime plot has similar changing trend. The intensity plot is slightly higher than the lifetime plot reflecting the existence of static quenching. The nonlinear responses were related to the nonlinear solubility of oxygen, which perfectly satisfy the nonlinear solubility model. Data analysis indicates that the static quenching rate constant is unchanged and the percentage of static quenching is about 35% ± 3% in the whole range of oxygen concentration.

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JO - Journal of Photochemistry and Photobiology A: Chemistry

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Nonlinear phosphorescence quenching mechanism of gadolinium labeled porphyrin by oxygen on filter paper

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