title: Synthesis of thiolate-protected Au nanoparticles revisited: U-shape trend between the size of nanoparticles and thiol-to-Au ratio.
abstract: We report a new understanding of the factors controlling the size of thiolate-protected gold nanoparticles (Au NPs): the formation and the state of a protecting layer (Au(i)-thiolate motifs) outside the gold core determine the size of Au NPs, depending on the feeding thiol-to-Au ratio. As a result, a U-shape trend is identified between the size of Au NPs and the thiol-to-Au ratio as opposed to the commonly expected decreasing trend.
authors.affiliation: Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore. chexiej@nus.edu.sg.
authors.forename: Tiankai
authors.initials: T
authors.lastname: Chen
authors.affiliation: Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore. chexiej@nus.edu.sg.
authors.forename: Zhentao
authors.initials: Z
authors.lastname: Luo
authors.affiliation: Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore. chexiej@nus.edu.sg.
authors.forename: Qiaofeng
authors.initials: Q
authors.lastname: Yao
authors.affiliation: Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore. chexiej@nus.edu.sg.
authors.forename: Andrea Xin Hui
authors.initials: AX
authors.lastname: Yeo
authors.affiliation: Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore. chexiej@nus.edu.sg.
authors.forename: Jianping
authors.initials: J
authors.lastname: Xie