期刊
LANGMUIR
卷 35, 期 38, 页码 12350-12355出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.9b01527
关键词
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资金
- National Natural Science Foundation of China [U1532141, 21631001, 21602002, 21871001, 21803001]
- Ministry of Education
- Education Department of Anhui Province [KJ2017A010]
- 211 Project of Anhui University
A photo-induced transformation from [Au-23(S-c-C-6)(16)](-)(TOA)(+) to Au-28(S-c-C-6)(20) nanocluster was first reported in this work. The [Au-23(S-c-C-6)(16)](-)(TOA)(+) nanocluster is first excited to [Au-23(S-c-C-6)(16)](center dot-)(TOA)(+) by photons with energy higher than its E-g (E-g = HOMO - LUMO energy gap), and then, the negatively charged [Au-23(S-c-C-6)(16)](center dot-) nanocluster was oxidized to the neutral state by transfering one electron to O-2. The unstable neutral cluster [Au-23(S-c-C-6)(16)](0) obtained was decomposed into smaller nanocluster and finally reassembled into the Au-28(S-c-C-6)(20) nanocluster. Time-dependent UV-vis, matrix-assisted laser desorption/ionization time of flight mass spectrometry, electron paramagnetic resonance, and electrospray ionization mass spectrometry characterizations were performed to monitor the nanocluster size transformation.
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