title: In Situ Two-Phase Ligand Exchange: A New Method for the Synthesis of Alloy Nanoclusters with Precise Atomic Structures.
abstract: A new method termed "in situ two-phase ligand exchange" was developed to obtain alloy nanoclusters. With this approach, a series of alloy nanoclusters were obtained for the first time, including Au20Ag1(SR)15, Au21-xAgx(SR)15(x = 4-8), Au21-xCux(SR)15(x = 0, 1), and Au21-xCux(SR)15(x = 2-5) (R = tert-butyl). Interestingly, single-crystal X-ray crystallography (SC-XRD) shows that their frameworks are all alike except for Au21-xCux(SR)15(x = 2-5), indicating that more Cu dopants alter the structure. Au21-xCux(SR)15(x = 2-5) exhibits a significantly different configuration. The optical absorption spectra of these bimetal nanoclusters (NCs) show distinct characteristic peaks, indicating that the metal-doping remarkably affects the electronic structure of NCs. The DFT calculations were also employed for determination of NC 1-3 frameworks and understanding their optical properties.
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, People's Republic of China.
authors.forename: Sha
authors.initials: S
authors.lastname: Yang
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, People's Republic of China.
authors.forename: Jinsong
authors.initials: J
authors.lastname: Chai
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, People's Republic of China.
authors.forename: Yongbo
authors.initials: Y
authors.lastname: Song
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, People's Republic of China.
authors.forename: Jiqiang
authors.initials: J
authors.lastname: Fan
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, People's Republic of China.
authors.forename: Tao
authors.initials: T
authors.lastname: Chen
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, People's Republic of 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, People's Republic of China.
authors.forename: Haizhu
authors.identifier: 0000-0003-3010-1331
authors.initials: H
authors.lastname: Yu
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, People's Republic of China.
authors.forename: Xiaowu
authors.initials: X
authors.lastname: Li
authors.affiliation: Department of Chemistry and Center for Atomic Engineering of Advanced Materials, Anhui University , Hefei, Anhui 230601, People's Republic of China.
authors.forename: Manzhou
authors.identifier: 0000-0002-3068-7160
authors.initials: M
authors.lastname: Zhu