Hindered fluorescence quenching in an insulated molecular wireThis is one of a number of contributions from the current members of the Dyson Perrins Laboratory to mark the end of almost 90 years of organic chemistry research in that building, as all its current academic staff move across South Parks Road to a new purpose-built laboratory.
作者:Peter N. Taylor、Andrew J. Hagan、Harry L. Anderson
DOI:10.1039/b306727k
日期:——
fluorescence quenching using three different electron-acceptors (methyl viologen 13(2+), dipropyl-4,4'-bipyridinium disulfonate 14 and anthraquinone-2,6-disulfonate 15(2-)) shows that the threaded cyclophanes inhibit electron-transfer from the excited state of the dumbbell by steric shielding, and by electrostatic shielding in the case of methyl viologen.
使用水性Glaser偶联剂已经制备了在1(2)内的[3]轮烷2,其由穿过两个阳离子环烷基1(2+)的阴离子亚苯基亚乙炔基哑铃2(4-)组成。使用三种不同的电子受体(甲基紫精13(2+),二丙基-4,4'-联吡啶二磺酸盐14和蒽醌-2,6-二磺酸盐15(2-))进行荧光猝灭的Stern-Volmer分析显示,带螺纹的Cyclphanes通过空间屏蔽,以及在甲基紫精的情况下通过静电屏蔽,抑制了来自哑铃激发态的电子转移。