A bistable [2]catenane switched by hetero-radical pairing interactions
作者:Yang Zhang、Qiong Chen、Yan Wang、Xujun Zheng、Haiying Wang、Fahe Cao、Andrew C.-H. Sue、Hao Li
DOI:10.1039/d0cc02012e
日期:——
containing both a 1,5-dioxynaphthalene (DNP) and a naphthalene-1,4,5,8-bis(dicarboximide) (NDI) unit, was obtained by using template-directed synthesis via click chemistry. In the fully oxidized state, the CBPQT4+ component encircles the DNP unit, driven by donor–acceptor interactions. Upon reduction of both the CBPQT4+ ring and the NDI unit, the CBPQT2(˙+) ring undergoes shuttling and resides on the
Novel naphthalimides with two heterocyclic side chains of 2-nitroimidazole for bioreductive binding were designed, synthesized, and used as fluorescent markers for hypoxic cells. Their evaluation for imaging tumor hypoxia was carried Out in V79 cells, CHO cells, and 95D cells in vitro by using fluorescence scan ascent. A(2) and A(4) showed a very large differential fluorescence between hypoxic and oxic cells (V79 cells) in vitro and are promising candidate markers for hypoxic cells. (c) 2005 Elsevier Ltd. All rights reserved.