Publication

pH-Induced Surface Modification of Atomically Precise Silver Nanoclusters: An Approach for Tunable Optical and Electronic Properties

​pH-Induced Surface Modification of Atomically Precise Silver Nanoclusters: An Approach for Tunable Optical and Electronic Properties
Lina G. AbdulHalim, Zahra Hooshmand, Manas R. Parida, Shawkat M. Aly, Duy Le, Xin Zhang, Talat S Rahman, Matthew Pelton, Yaroslav Losovyj, Peter A. Dowben, Osman M. Bakr, Omar F. Mohammed, and Khabiboulakh Katsiev
Inorg. Chem., 2016, 55 (21), pp 11522–11528
Lina G. AbdulHalim, Zahra Hooshmand, Manas R. Parida, Shawkat M. Aly, Duy Le, Xin Zhang, Talat S Rahman, Matthew Pelton, Yaroslav Losovyj, Peter A. Dowben, Osman M. Bakr, Omar F. Mohammed, Khabiboulakh Katsiev
silver nanocluster, spectroscopy
2016

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Noble metal nanoclusters (NCs) play a pivotal role in bridging the gap between molecules and quantum dots. Fundamental understanding of the evolution of the structural, optical, and electronic properties of these materials in various environments is of paramount importance for many applications. Using state-of-the-art spectroscopy, we provide the first decisive experimental evidence that the structural, electronic, and optical properties of Ag44(MNBA)30 NCs can now be tailored by controlling the chemical environment. Infrared and photoelectron spectroscopies clearly indicate that there is a dimerization between two adjacent ligands capping the NCs that takes place upon lowering the pH from 13 to 7.

 

DOI: 10.1021/acs.inorgchem.6b02067