Highly Sensitive Fluorescent Probes for Zinc Ion Based on Triazolyl-Containing Tetradentate Coordination Motifs
摘要:
Two new 1,2,3-triazolyl-containing N4-tetradentate ligands show nanomolar affinity for Zn2+ under physiological conditions. Furthermore, they are easily derivatizable to afford fluorescent probes suitable for sensitive Zn2+ detection. Structural characterizations in both solid and solution states suggest that N3 and N2 in the 1,2,3-triazolyl moiety coordinate with Zn2+ in A and B to afford five-membered and six-membered coordination rings, respectively. The probes show sensitive fluorescence enhancement and ratiometric responses to Zn2+.
Copper(I) Acetate: A Structurally Simple but Highly Efficient Dinuclear Catalyst for Copper-Catalyzed Azide-Alkyne Cycloaddition
作者:Changwei Shao、Guolin Cheng、Deyong Su、Jimin Xu、Xinyan Wang、Yuefei Hu
DOI:10.1002/adsc.200900768
日期:——
this article, the structurally well‐defined dinuclear complex copper(I) acetate was studied in detail and was developed as a highly practical and efficient catalyst for the copper(I)‐catalyzed azide‐alkyne cycloaddition. The “bare” phenylethynylcopper(I) (i.e., with no exogeneous ligands) was isolated as an intermediate, which can be converted into an active catalytic species by treatment with acetic