Facile redox state manipulation in Cu(i) frameworks by utilisation of the redox-active tris(4-(pyridin-4-yl)phenyl)amine ligand. Issue 34 (9th June 2015) - Hua, Carol
Abstract : Two Cu(i ) frameworks were synthesised with the NPy3 ligand and Cu(ii ) salts to yield electroactive Cu(i ) frameworks whose spectral properties varied as a function of the redox state. Abstract : The incorporation of a redox-active tris(4-(pyridine-4-yl)phenyl)amine (NPy3 ) ligand into the Cu(i ) coordination frameworks [CuNPy3 NO3 ·solvent] n and [CuNPy3 Cl·solvent] n has been shown to facilitate redox state switching in the materials. In both cases, the initial Cu(ii ) metal centre was reduced in situ during the solvothermal synthesis under relatively mild conditions where the use of chloride and nitrate counterions resulted in significantly different structures. Solid state electrochemical and Vis/NIR spectroelectrochemical experiments facilitated the characterisation and manipulation of the accessible redox states, demonstrating the highly tunable nature of the spectral properties – a property of significant interest in the design of advanced materials.