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Controlled Synthesis of Diphosphine-Protected Gold Cluster Cations Using Magnetron Sputtering Method
| Content Provider | MDPI |
|---|---|
| Author | Wang, Lewei Omoda, Tsubasa Koyasu, Kiichirou Tsukuda, Tatsuya |
| Copyright Year | 2022 |
| Description | We demonstrated, for the first time, atomically precise synthesis of gold cluster cations by magnetron sputtering of a gold target onto a polyethylene glycol (PEG) solution of 1,3-bis(diphenylphosphino)propane $(Ph_{2}PCH_{2}CH_{2}CH_{2}PPh_{2}$, dppp). UV-vis absorption spectroscopy and electrospray ionization mass spectrometry revealed the formation of cationic species, such as [Au(dppp)_{n}$]^{+}$ (n = 1, 2), [Au_{2}(dppp)_{n}$]^{2+}$ (n = 3, 4), [Au_{6}(dppp)_{n}$]^{2+}$ (n = 3, 4), and [Au_{11}(dppp)_{5}$]^{3+}$. The formation of [Au(dppp)_{2}$]^{+}$ was ascribed to ionization of $Au(dppp)_{2}$ by the reaction with PEG, based on its low ionization energy, theoretically predicted, mass spectrometric detection of deprotonated anions of PEG. We proposed that [Au(dppp)_{2}$]^{+}$ cations thus formed are involved as key components in the formation of the cluster cations. |
| Starting Page | 1330 |
| e-ISSN | 14203049 |
| DOI | 10.3390/molecules27041330 |
| Journal | Molecules |
| Issue Number | 4 |
| Volume Number | 27 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-02-16 |
| Access Restriction | Open |
| Subject Keyword | Molecules Analytical Chemistry Ligand-protected Gold Cluster Magnetron Sputtering Atomically Precise Synthesis Polyethylene Glycol |
| Content Type | Text |
| Resource Type | Article |
