Selenolate-Protected Au<sub>38</sub> Nanoclusters: Isolation and Structural Characterization
journal contribution
posted on 2015-12-16, 23:34 authored by Wataru Kurashige, Seiji Yamazoe, Keita Kanehira, Tatsuya Tsukuda, Yuichi NegishiWe
report the isolation and structural characterization of dodecaneselenolate-protected
Au<sub>38</sub> clusters (Au<sub>38</sub>(SeC<sub>12</sub>H<sub>25</sub>)<sub>24</sub>). These clusters were synthesized via the reaction
of phenylethanethiolate-protected Au<sub>38</sub> clusters (Au<sub>38</sub>(SC<sub>2</sub>H<sub>4</sub>Ph)<sub>24</sub>) with didodecyldiselenide
((C<sub>12</sub>H<sub>25</sub>Se)<sub>2</sub>). Characterization of
the product by mass spectrometry and thermogravimetric analysis confirmed
that highly pure Au<sub>38</sub>(SeC<sub>12</sub>H<sub>25</sub>)<sub>24</sub> had been obtained. The electronic and geometrical structures,
bonding characteristics, and stability of the Au<sub>38</sub>(SeC<sub>12</sub>H<sub>25</sub>)<sub>24</sub> clusters were assessed using
extended X-ray fine structure and X-ray absorption near edge structure
measurements, optical absorption spectroscopy, electrochemical measurements,
and stability testing.
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