摘要
Although inorganic anion templates are highly appreciated in the synthesis of nanosized silver clusters,supramolecular clusters used as templates to mold silver nanoclusters remain as-yet-unknown due to their existence as volatile forms in solution.Here,we report the synthesis of a novel silver-thiolate nanocluster(SD/Ag58a),comprising an outer tetrahedral cage of 58 silver atoms and a central supramolecular cluster[CH_(3)OH@(SO_(4))_(4)(H_(2)O)6]8−(hereafter abbreviated as CS_(4)H_(6)).Ternary CS_(4)H_(6) cluster was constructed from an(SO_(4))_(4) tetrahedron encaging one CH_(3)OH molecule inside and six water molecules sitting between paired SO_(4)^(2−)ions to form the[SO_(4)…H_(2)O…SO_(4)]hydrogen bonds(H-bonds).Also,the CS4H6 could coordinate to the inner wall of the Ag58 cage by forming Ag-O bonds,exerting templating effect on the formation of SD/Ag58a.Moreover,SD/Ag58a showed a photocurrent response upon visible light irradiation and emitted luminescence in the near-infrared(NIR)region at a cryogenic temperature.This work exemplifies the ternary supramolecule templating effect in the construction of silver nanocluster and facilitates understanding of the structure of complex solvated anion cluster in atomic precision.
基金
supported financially by the National Natural Science Foundation of China(grant nos.91961105,21822107,21571115,and 21827801)
the Fok Ying Tong Education Foundation(grant no.171009)
the Natural Science Foundation of Shandong Province(grant nos.ZR2020ZD35,ZR2019ZD45,JQ201803,and ZR2017MB061)
the Taishan Scholar Project of Shandong Province of China(grant nos.tsqn201812003 and ts20190908)
the Qilu Youth Scholar Funding of Shandong University
Project for Scientific Research Innovation Team of Young Scholar in Colleges and Universities of Shandong Province(grant no.2019KJC028).
