Thomas Sophie R, Tan Tristan T Y, Rubio Guilherme M D M, Chalermnon Monnaya, Chin Jia Min, Reithofer Michael R
Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Währinger Str. 42, Vienna 1090, Austria.
Institute of Material Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore 138634, Singapore.
Inorg Chem. 2025 Sep 29;64(38):19316-19324. doi: 10.1021/acs.inorgchem.5c03050. Epub 2025 Sep 12.
A series of gold nanoparticles (AuNPs) stabilized by bidentate acyclic diamino carbenes (ADCs) were synthesized via the reduction of dimeric gold(I) complexes. The resulting ADC-AuNPs were characterized by NMR spectroscopy, UV-vis spectroscopy, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA), revealing nanoparticles with a narrow size distribution and sizes ranging from 1.7 to 3.3 nm. This synthetic approach was extended to an asymmetric dinuclear ADC-gold(I) complex, affording slightly larger AuNPs (∼4 nm) upon reduction. The ADC-AuNPs with shorter linkers exhibited significant catalytic activity for the reduction of 4-nitrophenol, demonstrating a versatile and efficient route to catalytically active gold nanoparticles stabilized by both symmetric and asymmetric ADC ligands.
通过二聚体金（I）配合物的还原反应，合成了一系列由双齿无环二氨基卡宾（ADC）稳定的金纳米颗粒（AuNP）。通过核磁共振光谱、紫外可见光谱、X射线光电子能谱（XPS）、透射电子显微镜（TEM）和热重分析（TGA）对所得的ADC-AuNP进行了表征，结果显示纳米颗粒尺寸分布窄，大小在1.7至3.3纳米之间。这种合成方法扩展到了一种不对称双核ADC-金（I）配合物，还原后可得到稍大一些的AuNP（约4纳米）。具有较短连接基的ADC-AuNP对4-硝基苯酚的还原表现出显著的催化活性，这证明了一种通用且有效的途径，可用于制备由对称和不对称ADC配体稳定的具有催化活性的金纳米颗粒。
