Institutes of Physics Science and Information Technology, Anhui University, Hefei 230601, PR China; Department of Chemistry, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230601, PR China.
Institutes of Physics Science and Information Technology, Anhui University, Hefei 230601, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2020 Jan 5;224:117448. doi: 10.1016/j.saa.2019.117448. Epub 2019 Aug 3.
Amounts of strategies implemented to obtain improved two-photon absorption responses but remains challenging. Herein, a serials zwitterionic chromophores, TSEO1-3, with D-π-A configuration were rational designed and synthesized. Notably, by minor modification of the side chain, the obtained TSEO3 exhibited enhanced two-photon activity and considerable two-photon imaging in vitro and in vivo. It manifested that appropriate modifications of side chains that are linked to conjugated frameworks can improve the intermolecular packing order and boost charge transfer favoring two-photon activity.
尽管已经实施了许多策略来提高双光子吸收响应，但这仍然具有挑战性。在此，我们设计并合成了一系列具有 D-π-A 构型的两性离子生色团 TSEO1-3。值得注意的是，通过对侧链进行微小修饰，得到的 TSEO3 表现出增强的双光子活性和体外及体内可观的双光子成像。这表明，与共轭框架相连的侧链的适当修饰可以改善分子间堆积顺序并促进有利于双光子活性的电荷转移。
