Quantifying factors that influence metal ion release in photocaged complexes using ZinCast derivatives
作者:Celina Gwizdala、Charlene V. Singh、Tracey R. Friss、John C. MacDonald、Shawn C. Burdette
DOI:10.1039/c2dt30135k
日期:——
tridentate ZinCast-1 utilizes a bis-pyridin-2-ylmethyl-aniline ligand that forms a 5,5-chelate ring upon metal binding. The related photocages ZinCast-2 with a N-[2-(pyridine-2-yl)ethyl]-N-(pyridine-2-ylmethyl)aniline (5,6-chelate ring) and ZinCast-3 with a N,N-bis[2-(pyridine-2-yl)ethyl]aniline (6,6-chelate ring) were synthesized for comparative studies. The complexes formed by the ions Cu2+, Zn2+ and
已经制备并表征了两代用于Zn 2+的基于硝基苯甲酚的光笼。第一个系列包括三齿ZinCast-1,利用双吡啶-2-基甲基苯胺配体,该配体在与金属结合时形成5,5-螯合物环。具有N- [2-(吡啶-2-基)乙基] -N-(吡啶-2-基甲基)苯胺(5,6-螯合物环)的相关光笼ZinCast-2和具有N,N的ZinCast-3合成了双[2-(吡啶-2-基)乙基]苯胺(6,6-螯合物环)用于比较研究。由离子Cu 2 +,Zn 2+和Cd 2+形成的络合物用UV-Vis光谱法分析了三种ZinCast及其光产物(ZinUnc)的混合物。研究表明,ZinCast-1形成具有最高稳定性的复合物,而ZinCast-3在解笼时在金属亲和力方面表现出最显着的变化。这些结果表明,必须考虑氮原子供体能力的变化以及初始配合物的稳定性,以设计具有所需性质的光笼。合成的结果用于设计ZinCast-4和ZinCast-5,这