Scholarlink

<p>A binuclear Zn(II)-Zn(II) complex <b>2b-</b>Zn<sub>2</sub> from a macrocyclic ligand <b>2b</b> has been shown to be stable in an aqueous solution, exhibiting absorption (λ<sub>max</sub> ≈ 367&#xa0;nm) and weak blue fluorescence (λ<sub>em</sub> ≈ 424&#xa0;nm). The weak fluorescence intensity of the zinc complex could be dramatically increased when the solution was cooled. Upon addition of pyrophosphate ion (PPi), the resulting product gave a large bathochromic shift in both absorption (Δλ<sub>max</sub> by ~ 57&#xa0;nm) and fluorescence (Δλ<sub>em</sub> by ~ 106&#xa0;nm). Spectroscopic studies indicated that the resulting emissive species could be aggregation of the macrocyclic ligand that was accompanied with partial hydrolysis of imine bonds.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A Binuclear Zn(II) Complex Giving A Large Fluorescent Response Upon Binding PPi Anion

  • 期刊论文

  • 发表日期：

    2025年5月21日

查看全文
  • Joanne Li,
  • Yonghao Li,
  • Yi Pang

摘要

A binuclear Zn(II)-Zn(II) complex 2b-Zn2 from a macrocyclic ligand 2b has been shown to be stable in an aqueous solution, exhibiting absorption (λmax ≈ 367 nm) and weak blue fluorescence (λem ≈ 424 nm). The weak fluorescence intensity of the zinc complex could be dramatically increased when the solution was cooled. Upon addition of pyrophosphate ion (PPi), the resulting product gave a large bathochromic shift in both absorption (Δλmax by ~ 57 nm) and fluorescence (Δλem by ~ 106 nm). Spectroscopic studies indicated that the resulting emissive species could be aggregation of the macrocyclic ligand that was accompanied with partial hydrolysis of imine bonds.