Near-IR Core-Substituted Naphthalenediimide Fluorescent Chemosensors for Zinc Ions: Ligand Effects on PET and ICT Channels
作者:Xinyu Lu、Weihong Zhu、Yongshu Xie、Xin Li、Yuan Gao、Fuyou Li、He Tian
DOI:10.1002/chem.201000461
日期:——
applications. Two NIR fluorescent turn‐on sensors N,N′‐di‐n‐butyl‐2‐(N‐2‐[bis(pyridin‐2‐ylmethyl)amino]ethyl})‐6‐(N‐piperidinyl)naphthalene‐1,4,5,8‐tetracarboxylic acid bisimide and N,N′‐di‐ n‐butyl‐2‐[N,N,N′‐tri(pyridin‐2‐ylmethyl)amino]ethyl‐6‐(N‐piperidinyl)naphthalene‐1,4,5,8‐tetracarboxylic acid bisimide (PND and PNT) for Zn2+ based on naphthalenediimide fluorophore are reported. Our strategy was
近红外(NIR)发射可为体外和体内生物学应用提供独特的优势。两个NIR荧光开启传感器N,N'-二-正丁基-2-(N- 2- [双(吡啶(2-吡啶基-2-甲基)氨基)乙基]}]-6(N-哌啶基)萘- -1,4,5,8-四羧酸双酰亚胺和ñ,ñ ' -二ñ丁基-2- [ ñ,ñ,ñ ' -三(吡啶-2-基甲基)氨基]乙基-6-(ñ - Zn 2+的哌啶基)萘-1,4,5,8-四羧酸双酰亚胺(PND和PNT)据报道基于萘二酰亚胺的荧光团。我们的策略是选择芯取代的萘二酰亚胺(NDI)作为新型NIR荧光团和Ñ,ñ -二(吡啶-2-基甲基)乙烷-1,2-二胺(DPEA)或Ñ,ñ,N' -三(吡啶-2-基甲基)乙烷-1-二胺(TPEA)分别作为受体,以提高对Zn 2+的选择性。在PND的情况下,吸收光谱和发射光谱的变化可忽略不计,这强烈表明次氮原子(直接连接到NDI部分N 1)几乎不受Zn 2+的干扰。Zn