2013 Fiscal Year Final Research Report

High functionalization of macrocyclic host compounds based on dynamic octadentate cyclen-metal complexes

Research Project

Project/Area Number	24750133
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Multi-year Fund
Research Field	Functional materials chemistry
Research Institution	Osaka City University
Principal Investigator	ITO Hiroshi 大阪市立大学, 大学院理学研究科, 特任講師 (90506734)
Project Period (FY)	2012-04-01 – 2014-03-31
Keywords	超分子化学 / 金属錯体 / サイクレン / 分子認識 / 構造有機化学 / キラリティー / ランタノイド / ナトリウム
Research Abstract	A series of macrotricyclic host compounds based on two octadentate cyclen-metal complexes was synthesized and applied for the recognition of guest anions using the internal cavity. The dinuclear complexes dynamically changed their molecular structures depending on solvent, side chains, and guest molecules. Especially, molecular recognitions by sodium complex was firstly achieved by using a sophisticatedly designed disodium complex. Chirality recognition of guest anions by chiral di-lanthanoid complexes was detected by the difference of emission intensity of the lanthanoid cations, which can be distinguished by naked eyes in some cases. We also developed two novel methods for the control of molecular dynamics of octadentate cyclen-metal complexes: a bimodal control of molecular dynamics, and reversible molecular switching using organic reactions.