title: pH-Induced Surface Modification of Atomically Precise Silver Nanoclusters: An Approach for Tunable Optical and Electronic Properties.
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)30NCs 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.
authors: King Abdullah University of Science and Technology (KAUST), Physical Sciences and Engineering Division, Solar and Photovoltaics Engineering Research Center (SPERC) , Thuwal 23955-6900, Saudi Arabia.
authors: Lina G
authors: LG
authors: AbdulHalim
authors: Department of Physics, University of Central Florida , Orlando, Florida 32816, United States.
authors: Zahra
authors: Z
authors: Hooshmand
authors: King Abdullah University of Science and Technology (KAUST), Physical Sciences and Engineering Division, Solar and Photovoltaics Engineering Research Center (SPERC) , Thuwal 23955-6900, Saudi Arabia.
authors: Manas R
authors: MR
authors: Parida
authors: King Abdullah University of Science and Technology (KAUST), Physical Sciences and Engineering Division, Solar and Photovoltaics Engineering Research Center (SPERC) , Thuwal 23955-6900, Saudi Arabia.
authors: Shawkat M
authors: SM
authors: Aly
authors: Department of Physics, University of Central Florida , Orlando, Florida 32816, United States.
authors: Duy
authors: D
authors: Le
authors: Department of Physics and Astronomy, University of Nebraska-Lincoln , Lincoln, Nebraska 68588, United States.
authors: Xin
authors: X
authors: Zhang
authors: Department of Physics, University of Central Florida , Orlando, Florida 32816, United States.
authors: Talat S
authors: TS
authors: Rahman
authors: Department of Physics, University of Maryland , Baltimore County, 1000 Hilltop Circle, Baltimore, Maryland 21250, United States.|Center for Nanoscale Materials, Argonne National Laboratory , 9700 South Cass Avenue, Argonne, Illinois 60439, United States.
authors: Matthew
authors: M
authors: Pelton
authors: Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States.
authors: Yaroslav
authors: Y
authors: Losovyj
authors: Department of Physics and Astronomy, University of Nebraska-Lincoln , Lincoln, Nebraska 68588, United States.
authors: Peter A
authors: PA
authors: Dowben
authors: King Abdullah University of Science and Technology (KAUST), Physical Sciences and Engineering Division, Solar and Photovoltaics Engineering Research Center (SPERC) , Thuwal 23955-6900, Saudi Arabia.
authors: Osman M
authors: OM
authors: Bakr
authors: King Abdullah University of Science and Technology (KAUST), Physical Sciences and Engineering Division, Solar and Photovoltaics Engineering Research Center (SPERC) , Thuwal 23955-6900, Saudi Arabia.
authors: Omar F
authors: OF
authors: Mohammed
authors: King Abdullah University of Science and Technology (KAUST), Physical Sciences and Engineering Division, Solar and Photovoltaics Engineering Research Center (SPERC) , Thuwal 23955-6900, Saudi Arabia.
authors: Khabiboulakh
authors: K
authors: Katsiev