Solvent effects on the absorption and emission spectra of organic compounds have been widely observed. It is usually found that the positions, intensities and shapes of its bands are usually modified by these solvents. The solvent effects on intramolecular charge transfer (ICT) process have been extensively reported, whereas the solvent effect on photoinduced electron transfer (PET) process is scarce. In this contribution, it was disclosed that boronic acid derived salicylidenehydrazone complexes (BSs), BS-DPE and BS-DPBDE, with two perpendicular ICT states developed a non-fluorescent PET compounds through separating its two ICT states by boron node. Relative strong acidic proton in non-hydrogen-bond accepting solvent were proved to actuate the vanishment of PET and reinstatement of its fluorescence.

已经广泛观察到溶剂对有机化合物的吸收和发射光谱的影响。通常发现其带的位置，强度和形状通常被这些溶剂修饰。溶剂对分子内电荷转移（ICT）过程的影响已得到广泛报道，而溶剂对光致电子转移（PET）过程的影响却很少。在该贡献中，公开了具有两个垂直ICT状态的硼酸衍生的水杨基hydr复合物（BSs），BS-DPE和BS-DPBDE通过通过硼节点分离其两个ICT状态而开发了非荧光PET化合物。事实证明，在非氢键键合溶剂中的相对强酸性质子可激活PET的消失并恢复其荧光。