pH surface control of Ag₄₄ (MNBA)₃₀ nanoclusters: An approach for tunable optical and electronic properties
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Date
2016-10-24
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Citation of Original Publication
AbdulHalim, Lina G., Zahra Hooshmand, Manas R. Parida, Shawkat M. Aly, Duy Le, Xin Zhang, Talat S Rahman, et al. “PH-Induced Surface Modification of Atomically Precise Silver Nanoclusters: An Approach for Tunable Optical and Electronic Properties.” Inorganic Chemistry 55, no. 21 (November 7, 2016): 11522–28. https://doi.org/10.1021/acs.inorgchem.6b02067.
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This document is the unedited Author’s version of a Submitted Work that was subsequently accepted for publication in Inorganic Chemistry, copyright © American Chemical Society after peer review. To access the final edited and published work see https://doi.org/10.1021/acs.inorgchem.6b02067.
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Abstract
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.