Visible Light Excitable Zn<sup>2+</sup> Fluorescent Sensor Derived from an Intramolecular Charge Transfer Fluorophore and Its in Vitro and in Vivo Application
作者:Fang Qian、Changli Zhang、Yumin Zhang、Weijiang He、Xiang Gao、Ping Hu、Zijian Guo
DOI:10.1021/ja806489y
日期:2009.2.4
this work, an intramolecular charge transfer (ICT) fluorophore of smaller aromatic plane, 4-amino-7-nitro-2,1,3-benzoxadiazole, was adopted to construct visible light excited fluorescent Zn(2+) sensor, NBD-TPEA. This sensor demonstrates a visible ICT absorption band, a large Stokes shift, and biocompatibility. It emits weakly (Phi = 0.003) without pH dependence at pH 7.1-10.1, and the lambda(ex) and
对生活系统的紫外线和传感器引起的干扰构成了体内 Zn(2+) 成像的障碍。在这项工作中,采用较小芳香平面的分子内电荷转移 (ICT) 荧光团 4-氨基-7-硝基-2,1,3-苯并恶二唑构建可见光激发荧光 Zn(2+) 传感器 NBD-热塑性弹性体。该传感器具有可见的 ICT 吸收带、较大的斯托克斯位移和生物相容性。它在 pH 7.1-10.1 时发出微弱 (Phi = 0.003) 而不依赖于 pH,并且 lambda(ex) 和 lambda(em) 为 469 (epsilon(469) = 2.1 x 10(4) M(-1) cm(- 1)) 和 550 nm,分别。NBD-TPEA 显示出独特的选择性 Zn(2+) 放大荧光(Phi = 0.046,epsilon(469) = 1.4 x 10(4) M(-1) cm(-1)),发射位移从 550 到 534 nm , 这可以归因