Fluorescence studies of quantum dots and zinc tetraamino phthalocyanine conjugates
Fluorescence studies of quantum dots and zinc tetraamino phthalocyanine conjugates
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DOI：
10.1016/j.inoche.2009.06.028
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发表时间：
2009-09-01
影响因子：
3.8
通讯作者：
Nyokong, Tebello
中科院分区：
文献类型：
--
作者：
Britton, Jonathan;Antunes, Edith;Nyokong, Tebello
以巯基丙酸（MPA）为包封剂，以n -乙基- n（3-二甲氨基丙基）碳二亚胺（EDC）和n -羟基琥珀酰亚胺（NHS）为偶联剂，将CdTe量子点与四氨基酞菁锌（ZnTAPc）共价连接。结果表明，ZnTAPc和CdTe量子点之间形成酰胺键。连接的ZnTAPc- qd配合物和QDs与ZnTAPc的混合物（即没有化学连接）都表现出福斯特共振能量转移（FRET）。ZnTAPc猝灭QDs，猝灭常数约为10(3)M-1。(C) 2009 Elsevier B.V.版权所有
CdTe Qds capped with mercapto propionic acid (MPA) were covalently linked to zinc tetraamino phthalocyanine (ZnTAPc) using N-ethyl-N(3-dimethylaminopropyl) carbodiimide (EDC) and N-hydroxy succinimide (NHS) as the coupling agents. The results presented give evidence in favour of the formation of an amide bond between ZnTAPc and CdTe QDs. Both the linked ZnTAPc-QD complexes and a mixture of QDs and ZnTAPc (i.e. without chemical linking) showed Forster resonance energy transfer (FRET). ZnTAPc quenched the QDs emission, giving quenching constants in the order of 10(3) M-1. (C) 2009 Elsevier B.V. All rights reserved.