Selective Turn-on Fluorescent Chemosensors for Zn2+
碩士 === 國立交通大學 === 應用化學系碩博士班 === 100 === In this thesis, three chemosensors DP1, DP2 and DP3 based on dipyrrins were designed for Zn2+ detection. DP1 produced significant fluorescence enhancement (20 fold) in the presence of Zn2+ ion, while the metal ions Ag+, Ca2+, Cd2+, Co2+,Cu2+, Fe2+,Fe3+, Hg2+,...
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ndltd-TW-100NCTU55000402016-03-28T04:20:38Z http://ndltd.ncl.edu.tw/handle/83548961019625517788 Selective Turn-on Fluorescent Chemosensors for Zn2+ 以dipyrrin為基底設計之新型鋅(II)離子螢光感測分子之合成與應用 Liu, Hao-Ming 劉浩敏 碩士 國立交通大學 應用化學系碩博士班 100 In this thesis, three chemosensors DP1, DP2 and DP3 based on dipyrrins were designed for Zn2+ detection. DP1 produced significant fluorescence enhancement (20 fold) in the presence of Zn2+ ion, while the metal ions Ag+, Ca2+, Cd2+, Co2+,Cu2+, Fe2+,Fe3+, Hg2+, Mg2+, Mn2+, Ni2+ and Pb2+ produced only minor changes in fluorescence. After addition of more than one equivalent of Zn2+, the emission intensity reached a maximum, at which the quantum yield was 0.10. According to 1H NMR studies, addition of Zn2+ caused the disappearance of amine (NH) hydrogen signal. This observation indicates that Zn2+ binding with DP1 is mainly through one nitrogen atom at benzoimidazole moiety and two nitrogen atoms at the dipyrrin group. The binding ratio of DP1–Zn2+ complexes was determined as 1 : 1 according to Job plot. Using Benesi-Hildebrand plot, the binding constant of DP1–Zn2+ complexes was decided as 6.12 x 104 M-1. The detection limit of the DP1-Zn2+ was 0.236 μM. The quantum yield and the binding constant of the DP2-Zn2+ were 0.017 and 6.64*104 M-1, respectively. The detection limit was 0.325 μM of DP2 for binding Zn2+. The quantum yield and the binding constant of DP3–Zn2+ complexes were 0.026 and 1.47*105 M-1, respectively. The detection limit was 0.492 μM of DP3 for detecting Zn2+. 吳淑褓 2012 學位論文 ; thesis 106 zh-TW |
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碩士 === 國立交通大學 === 應用化學系碩博士班 === 100 === In this thesis, three chemosensors DP1, DP2 and DP3 based on dipyrrins were designed for Zn2+ detection. DP1 produced significant fluorescence enhancement (20 fold) in the presence of Zn2+ ion, while the metal ions Ag+, Ca2+, Cd2+, Co2+,Cu2+, Fe2+,Fe3+, Hg2+, Mg2+, Mn2+, Ni2+ and Pb2+ produced only minor changes in fluorescence. After addition of more than one equivalent of Zn2+, the emission intensity reached a maximum, at which the quantum yield was 0.10. According to 1H NMR studies, addition of Zn2+ caused the disappearance of amine (NH) hydrogen signal. This observation indicates that Zn2+ binding with DP1 is mainly through one nitrogen atom at benzoimidazole moiety and two nitrogen atoms at the dipyrrin group. The binding ratio of DP1–Zn2+ complexes was determined as 1 : 1 according to Job plot. Using Benesi-Hildebrand plot, the binding constant of DP1–Zn2+ complexes was decided as 6.12 x 104 M-1. The detection limit of the DP1-Zn2+ was 0.236 μM. The quantum yield and the binding constant of the DP2-Zn2+ were 0.017 and 6.64*104 M-1, respectively. The detection limit was 0.325 μM of DP2 for binding Zn2+. The quantum yield and the binding constant of DP3–Zn2+ complexes were 0.026 and 1.47*105 M-1, respectively. The detection limit was 0.492 μM of DP3 for detecting Zn2+.
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author2 |
吳淑褓 |
author_facet |
吳淑褓 Liu, Hao-Ming 劉浩敏 |
author |
Liu, Hao-Ming 劉浩敏 |
spellingShingle |
Liu, Hao-Ming 劉浩敏 Selective Turn-on Fluorescent Chemosensors for Zn2+ |
author_sort |
Liu, Hao-Ming |
title |
Selective Turn-on Fluorescent Chemosensors for Zn2+ |
title_short |
Selective Turn-on Fluorescent Chemosensors for Zn2+ |
title_full |
Selective Turn-on Fluorescent Chemosensors for Zn2+ |
title_fullStr |
Selective Turn-on Fluorescent Chemosensors for Zn2+ |
title_full_unstemmed |
Selective Turn-on Fluorescent Chemosensors for Zn2+ |
title_sort |
selective turn-on fluorescent chemosensors for zn2+ |
publishDate |
2012 |
url |
http://ndltd.ncl.edu.tw/handle/83548961019625517788 |
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