Organosoluble Au102(SPh)44 Nanomolecules: Synthesis, Isolation, Compositional Assignment, Core Conversion, Optical Spectroscopy, Electrochemistry, and Theoretical Analysis

详细信息    查看全文

• 作者：Milan Rambukwella ; Luca Sementa ; Giovanni Barcaro ; Alessandro Fortunelli ; Amala Dass
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：November 5, 2015
• 年：2015
• 卷：119
• 期：44
• 页码：25077-25084
• 全文大小：518K
• ISSN：1932-7455

文摘

Characterization of p-mercaptobenzoic acid (p-MBA) protected Au₁₀₂(p-MBA)₄₄ nanomolecules has been so far limited by its water-soluble ligand system. In this work we report the first synthesis and isolation of thiolate-protected organosoluble Au₁₀₂(SPh-X)₄₄ nanomolecules via one-phase synthesis. Monodispersity of the nanomolecules was confirmed from matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS), and composition was determined from high-resolution electrospray ionization mass spectrometry (ESI-MS). For the first time we report the electrochemical behavior and temperature-dependent optical spectra of Au₁₀₂(SPh)₄₄. Theoretical simulations on the titled nanomolecules fully validate experimental data and demonstrate the role of electronic conjugation on optical properties.