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Fluorescence quenching reaction of chlorophyll a by tris(acetylacetonate)iron(III) in various solvents

Chlorophyll a is known as the prevailing light absorbing pigment giving a strong absorption and fluorescence emission in visible region. Quenching reactions of the chlorophyll a fluorescence by Fe(acac)3 were precisely investigated in various organic solvents which are benzene toluene, ethanol, meth...

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Main Authors: Nararak Leesakul,, Daweena Masen,, Grampp, Guenter
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:http://journalarticle.ukm.my/11360/1/03%20Nararak.pdf
http://journalarticle.ukm.my/11360/
http://www.ukm.my/jsm/english_journals/vol46num9_2017/contentsVol46num9_2017.html
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spelling my-ukm.journal.113602018-02-13T09:31:43Z http://journalarticle.ukm.my/11360/ Fluorescence quenching reaction of chlorophyll a by tris(acetylacetonate)iron(III) in various solvents Nararak Leesakul, Daweena Masen, Grampp, Guenter Chlorophyll a is known as the prevailing light absorbing pigment giving a strong absorption and fluorescence emission in visible region. Quenching reactions of the chlorophyll a fluorescence by Fe(acac)3 were precisely investigated in various organic solvents which are benzene toluene, ethanol, methanol, dmf, dmso and acetonitrile. Electron transfer performance of chlorophyll a by Fe(acac)3 was investigated from oxidative quenching reaction. Herein, the simplified Rehm-Weller relationship was used to calculate the free energy change of the photo-induced electron transfer reaction. Emission intensity decreased when the concentration of Fe(acac)3 quencher was increased. Non-linear Stern-Volmer plots are found to be affected by inner filter effect more than the ground state complex formation. Rate of quenching reactions (kq) were determined from the Stern-Volmer equation with corrected inner filter effect. The rates of quenching reactions occurred faster in high viscous solvents. Penerbit Universiti Kebangsaan Malaysia 2017-09 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/11360/1/03%20Nararak.pdf Nararak Leesakul, and Daweena Masen, and Grampp, Guenter (2017) Fluorescence quenching reaction of chlorophyll a by tris(acetylacetonate)iron(III) in various solvents. Sains Malaysiana, 46 (9). pp. 1369-1377. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol46num9_2017/contentsVol46num9_2017.html
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description Chlorophyll a is known as the prevailing light absorbing pigment giving a strong absorption and fluorescence emission in visible region. Quenching reactions of the chlorophyll a fluorescence by Fe(acac)3 were precisely investigated in various organic solvents which are benzene toluene, ethanol, methanol, dmf, dmso and acetonitrile. Electron transfer performance of chlorophyll a by Fe(acac)3 was investigated from oxidative quenching reaction. Herein, the simplified Rehm-Weller relationship was used to calculate the free energy change of the photo-induced electron transfer reaction. Emission intensity decreased when the concentration of Fe(acac)3 quencher was increased. Non-linear Stern-Volmer plots are found to be affected by inner filter effect more than the ground state complex formation. Rate of quenching reactions (kq) were determined from the Stern-Volmer equation with corrected inner filter effect. The rates of quenching reactions occurred faster in high viscous solvents.
format Article
author Nararak Leesakul,
Daweena Masen,
Grampp, Guenter
spellingShingle Nararak Leesakul,
Daweena Masen,
Grampp, Guenter
Fluorescence quenching reaction of chlorophyll a by tris(acetylacetonate)iron(III) in various solvents
author_facet Nararak Leesakul,
Daweena Masen,
Grampp, Guenter
author_sort Nararak Leesakul,
title Fluorescence quenching reaction of chlorophyll a by tris(acetylacetonate)iron(III) in various solvents
title_short Fluorescence quenching reaction of chlorophyll a by tris(acetylacetonate)iron(III) in various solvents
title_full Fluorescence quenching reaction of chlorophyll a by tris(acetylacetonate)iron(III) in various solvents
title_fullStr Fluorescence quenching reaction of chlorophyll a by tris(acetylacetonate)iron(III) in various solvents
title_full_unstemmed Fluorescence quenching reaction of chlorophyll a by tris(acetylacetonate)iron(III) in various solvents
title_sort fluorescence quenching reaction of chlorophyll a by tris(acetylacetonate)iron(iii) in various solvents
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2017
url http://journalarticle.ukm.my/11360/1/03%20Nararak.pdf
http://journalarticle.ukm.my/11360/
http://www.ukm.my/jsm/english_journals/vol46num9_2017/contentsVol46num9_2017.html
_version_ 1643738466354200576
score 13.211869

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