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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Penerbit Universiti Kebangsaan Malaysia
2017
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| Online Access: | http://journalarticle.ukm.my/11360/1/03%20Nararak.pdf |
| _version_ | 1796931459809804288 |
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| author | Nararak Leesakul, Daweena Masen, Grampp, Guenter |
| author_facet | Nararak Leesakul, Daweena Masen, Grampp, Guenter |
| author_sort | Nararak Leesakul, |
| collection | UKM |
| 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. |
| first_indexed | 2024-03-06T04:18:17Z |
| format | Article |
| id | ukm.eprints-11360 |
| institution | Universiti Kebangsaan Malaysia |
| language | English |
| last_indexed | 2024-03-06T04:18:17Z |
| publishDate | 2017 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| record_format | dspace |
| spelling | ukm.eprints-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 |
| spellingShingle | Nararak Leesakul, Daweena Masen, Grampp, Guenter Fluorescence quenching reaction of chlorophyll a by tris(acetylacetonate)iron(III) in various solvents |
| title | 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_short | 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 |
| url | http://journalarticle.ukm.my/11360/1/03%20Nararak.pdf |
| work_keys_str_mv | AT nararakleesakul fluorescencequenchingreactionofchlorophyllabytrisacetylacetonateironiiiinvarioussolvents AT daweenamasen fluorescencequenchingreactionofchlorophyllabytrisacetylacetonateironiiiinvarioussolvents AT gramppguenter fluorescencequenchingreactionofchlorophyllabytrisacetylacetonateironiiiinvarioussolvents |