title: Ag50(Dppm)6(SR)30and Its Homologue AuxAg50-x(Dppm)6(SR)30Alloy Nanocluster: Seeded Growth, Structure Determination, and Differences in Properties.
abstract: A large thiolate/phosphine coprotected Ag50(Dppm)6(SR)30nanocluster was synthesized through the further growth of Ag44(SR)30nanocluster and characterized by X-ray photoelectron spectroscopy (XPS), electrospray ionization mass spectrometry (ESI-MS), and single-crystal X-ray analysis. This new nanocluster comprised a 32-metal-atom dodecahedral kernel and two symmetrical Ag9(SR)15P6ring motifs. The 20 valence electrons correspond to shell closure in the Jellium model. Moreover, this nanocluster could be alloyed by templated/galvanic metal exchange to the homologue AuxAg50-x(Dppm)6(SR)30nanocluster; the latter showed much higher thermal stability than the Ag50(Dppm)6(SR)30nanocluster. Further experiments were conducted to study the optical, electrical, and photoluminescence properties of both nanoclusters. Our work not only reports two new larger size nanoclusters but also reveals a new way to synthesize larger size silver and alloy nanoclusters, that is, controlled growth/alloying.
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, PR China.
authors.forename: Wenjun
authors.initials: W
authors.lastname: Du
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, PR China.
authors.forename: Shan
authors.initials: S
authors.lastname: Jin
authors.affiliation: Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University , Xiangtan, Hunan 411105, PR China.
authors.forename: Lin
authors.initials: L
authors.lastname: Xiong
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, PR China.
authors.forename: Man
authors.initials: M
authors.lastname: Chen
authors.affiliation: School of Materials and Chemical Engineering, Anhui Jianzhu University , Hefei, Anhui 230601, PR China.
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, PR China.
authors.forename: Xuejuan
authors.initials: X
authors.lastname: Zou
authors.affiliation: Department of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University , Xiangtan, Hunan 411105, PR China.
authors.forename: Yong
authors.identifier: 0000-0003-0585-2045
authors.initials: Y
authors.lastname: Pei
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, PR China.
authors.forename: Shuxin
authors.identifier: 0000-0003-0403-3953
authors.initials: S
authors.lastname: Wang
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, PR China.
authors.forename: Manzhou
authors.identifier: 0000-0002-3068-7160
authors.initials: M
authors.lastname: Zhu