Cu2+-complexes as quenchers of photocatalytic activity of visible light-absorbing photosensitizers: An application in detection of nucleic acids

Cu2+-complexes as quenchers of photocatalytic activity of visible light-absorbing photosensitizers: An application in detection of nucleic acids
复制标题

Cu2+配合物作为可见光吸收光敏剂光催化活性的猝灭剂:在核酸检测中的应用

DOI:
10.1016/j.ica.2016.04.023
复制
发表时间:
2016
影响因子:
2.8
通讯作者:
Mokhir
Mokhir
中科院分区:
化学3区
文献类型:
--
作者:
Schikora;Mokhir

文献摘要

参考文献

相似文献

光敏剂是催化剂,其在用光照射时可以产生单线态氧。该反应已被证明适用于生物分子(例如核酸)的扩增检测。在已知的核酸响应性光敏剂中,通常应用有机猝灭剂。在本文中,我们探索了5-吡啶-2-基-1H-吡唑基配体的Cu 2+络合物作为这种类型的代表性光敏剂的猝灭剂。结果表明,该配合物能有效地猝灭光敏剂的荧光,抑制光催化产生单线态氧。猝灭的机制被认为是依赖于光敏剂的性质。例如,曙红被发现被淬灭的接触机制,而In 3+(焦脱镁叶绿酸-a)氯化物-的动力学机制。我们的结论是,基于Cu 2+的络合物可以被认为是通常应用的有机猝灭剂的廉价且易于调节的替代品。
Photosensitizers are catalysts, which can generate singlet oxygen upon their irradiation with light. This reaction has been shown to be suitable for the amplified detection of biomolecules, e.g. nucleic acids. In known nucleic acid-responsive photosensitizers organic quenchers are usually applied. Herein we explored a Cu2+-complex of a 5-pyridin-2-yl-1H-pyrazolyl ligand as a quencher of representative photosensitizers of this type. We demonstrated that this complex can efficiently quench fluorescence of the photosensitizers and inhibit the photocatalytic generation of singlet oxygen. The mechanism of quenching was found to be dependent on the nature of the photosensitizer. For example, eosin was found to be quenched by the contact mechanism, whereas In3+(pyropheophorbide-a)chloride – by the dynamic mechanism. We concluded that Cu2+-based complexes can be considered as cheap and easy to tune alternatives to usually applied organic quenchers.
通过荧光报告基团监测 Cu2+-与 DNA-Clip-phen 缀合物的结合和以金属为中心的氧化还原过程
DOI: 10.1002/zaac.201300077
发表时间: 2013
期刊: Zeitschrift für anorganische und allgemeine Chemie
影响因子: --
作者:
Arndt Sprödefeld;A. Kiel;D. Herten;R. Krämer
通讯作者: R. Krämer
DOI: 10.1039/c2cc33827k
发表时间: 2012-01-01
影响因子: 4.9
作者:
Dutta, Subrata;Flottmann, Benjamin;Mokhir, Andriy
通讯作者: Mokhir, Andriy
单个金属配合物的单分子研究
DOI: 10.1117/12.700430
发表时间: 2007
影响因子: 1.8
作者:
A. Kiel;Anne Järve;J. Kovács;A. Mokhir;R. Krämer;D. Herten
通讯作者: D. Herten
DOI: 10.1146/annurev-bioeng-061008-124920
发表时间: 2009
影响因子: 9.7
作者:
Bao G;Rhee WJ;Tsourkas A
通讯作者: Tsourkas A
DOI: 10.1021/ja0041324
发表时间: 2002-02-13
影响因子: 15
作者:
Kuhn, H;Demidov, VV;Frank-Kamenetskii, MD
通讯作者: Frank-Kamenetskii, MD