作者:Jianxiong Han、Chaoming Xie、Yun-Shuai Huang、Manfred Wagner、Wendong Liu、Xiaolong Zeng、Jiahui Liu、Shijie Sun、Kaloian Koynov、Hans-Jürgen Butt、Si Wu
DOI:10.1021/jacs.1c05648
日期:2021.8.18
healable materials, photoactivated drugs, nanocarriers, extracellular matrices, etc. However, reactive intermediates from photodynamic bonds usually lead to side reactions, which limit the use of photodynamic bonds. Here, we report that the Ru–Se coordination bond is a new photodynamic bond that reversibly dissociates under mild visible-light-irradiation conditions. We observed that Ru–Se bonds form
光动力键在黑暗中是稳定的,在光照射下可以可逆地解离/形成。光动力键是响应性或可修复材料、光活化药物、纳米载体、细胞外基质等的有前途的构建块。然而,光动力键的反应中间体通常会导致副反应,这限制了光动力键的使用。在这里,我们报告 Ru-Se 配位键是一种新的光动力键,在温和的可见光照射条件下可逆解离。我们观察到 Ru-Se 键是通过硒醚配体与 [Ru(tpy)(biq)(H 2 O)]Cl 2 的配位形成的(tpy = 2,2':6',2"-terpyridine, biq = 2,2'-biquinoline) 在黑暗中,而 Ru-Se 键在可见光照射下可逆解离。在 Ru-Se 键的形成和解离中没有检测到副反应。为了证明 Ru-Se 键适用于不同的操作环境,我们使用 Ru-Se 键制备了光响应两亲物、表面和聚合物凝胶。具有 Ru-Se 键的两亲物在暗/光照射循环中显示出球形胶束和碗状组装体之间的可逆形态转变。用含