[Zn(1-(2-pyridyl)-1,4,7,10-tetraazacyclododecane)(phthalimidato)]NO3 | 793717-84-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 异喹啉及其衍生物
• 英文名称: [Zn(1-(2-pyridyl)-1,4,7,10-tetraazacyclododecane)(phthalimidato)]NO3
• CAS: 793717-84-7
• 化学式: C₂₁H₂₇N₆O₂Zn*NO₃
• 分子量: 522.879
• InChiKey: IHFYAUBCIAWQKN-UHFFFAOYSA-M

反应信息

• 作为产物：
  描述：

  1-(2-pyridyl)-1,4,7,10-tetraazacyclododecane 以 乙醇 、 水 为溶剂， 生成 [Zn(1-(2-pyridyl)-1,4,7,10-tetraazacyclododecane)(phthalimidato)]NO3
  参考文献：
  名称：

  Metal Chelation-Controlled Twisted Intramolecular Charge Transfer and Its Application to Fluorescent Sensing of Metal Ions and Anions

  摘要：

  Two fluorescent ligands, N-(2-(5-cyanopyridyl))cyclen (L5) and N-(2-pyridyl)cyclen (L6) (cyclen = 1,4,7,10-tetraazacyclododecane), were designed and synthesized to control twisted intramolecular charge transfer (TICT) by metal chelation in aqueous solution. By complexation with Zn2+, L6 exhibited TICT emissions at 430 nm (excitation at 270 nm) in 10 mM HEPES (pH 7.0) with l = 0.1 (NaNO3) at 25 degreesC due to the perpendicular conformation of a pyridine ring with respect to a dialkylamino group, which was fixed by Zn2+-N(pyridine) coordination, as proven by potentiometric pH, UV, and fluorescence titrations and X-ray crystal structure analysis. We further describe that the 1:1 complexation of ZnL6 with guests such as succinimide, phosphates, thiolates, and dicarboxylates, which compete with a nitrogen in the pyridine ring for Zn2+ in ZnL6, induces considerable emission shift from TICT emissions (at 430 nm) to locally excited emissions (at ca. 350 nm) in neutral aqueous solution at 25 degreesC.

  DOI：

  10.1021/ja040095v