Construction of Crystalline One‐Dimensional Infinite Argentophilic Silver Alkynyl Assemblies and their Luminescence Properties

Quasi-Isomeric Anion-Templated Silver Nanoclusters: Effect of Bulkiness on Luminescence

Anion-templated silver nanoclusters are fascinating to study because of their diverse structures, which are dictated by the nature of both anions and ligands. Here, we used the bulky 1-ethynyladamantane as one of the protecting ligands alongside trifluoracetate to successfully synthesize a chlorine-templated silver nanocluster─Cl@Ag19(C12H15)11(C2O2F3)7. Elucidation of its structure by single crystal X-ray diffraction revealed the structure to be a chlorine-centered Ag19 cage with protection by alkynyl and carboxylic ligands. This cluster is non-emissive at room temperature and showed green emission with a large Stokes shift at low temperature. The crystal structure was found to be quasi-isomeric with a previously reported Ag19 cluster protected by tert-butyl acetylene, which is emissive at room temperature. Detailed photoluminescence studies and structure-property correlation revealed that the arrangement of the silver skeleton which is influenced by the bulky substituent of the ligand might be responsible for the difference in emission properties.

A one-dimensional infinite silver alkynyl assembly [Ag8(C[triple bond, length as m-dash]C t Bu)5(CF3COO)3(CH3CN)] n : synthesis, crystal structure and properties

A high-yield silver alkynyl assembly [Ag₈(CC^tBu)₅(CF₃COO)₃(CH₃CN)]_n (1) constructed from [AgCC^tBu]_n ligand, CF₃COOAg and CH₃CN auxiliary ligands with a one-dimensional infinite chain structure has been obtained in one pot. Compound 1 has been well-defined and characterized. The photocurrent properties and the temperature-sensitive luminescent properties of 1 have been investigated.

A high-yield one-dimensional infinite silver alkynyl assembly [Ag₈(CC^tBu)₅(CF₃COO)₃(CH₃CN)]_n (1) displays excellent photocurrent properties and temperature-sensitive luminescence properties.