K
Keisaku Kimura
Researcher at University of Hyogo
Publications - 79
Citations - 2156
Keisaku Kimura is an academic researcher from University of Hyogo. The author has contributed to research in topics: Nanoparticle & Colloidal gold. The author has an hindex of 26, co-authored 79 publications receiving 2055 citations.
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Large optical activity of gold nanocluster enantiomers induced by a pair of optically active penicillamines.
TL;DR: Circular dichroism (CD) spectroscopy confirmed the mirror image relationship between the D-Pen-capped and the L- penicillamine gold nanoclusters, suggesting that the surface modifier acts as a chiral selector, and that the nanocluster have well-defined stereostructures as common chiral molecules do.
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Synthesis and Chiroptical Study of D/L-Penicillamine-Capped Silver Nanoclusters
TL;DR: In this article, the synthesis and chiroptical properties of enantiomers of silver nanoclusters are reported, where the surface of the silver nanclusters is covered with l/d-penicillamine or their racemate.
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Enhanced photoluminescence from Si nano-organosols by functionalization with alkenes and their size evolution
TL;DR: Silicon nanoparticles ranging from 2 to 16 nm were synthesized by a facile wet chemical route, in which SiO amorphous powder was annealed at 1000 °C, etched in hydrofluoric acid, and surface modifi...
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Kinetic stabilization of growing gold clusters by passivation with thiolates.
TL;DR: This finding indicates that the reduction of the Au(I)-thiolate polymers yields small clusters whose growth is kinetically hindered by passivation with thiolates, and implies that deformation of the underlying gold cores is induced by interligand interactions.
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In situ detection of birefringent mesoscopic H and J aggregates of thiacarbocyanine dye in solution.
TL;DR: Investigations on the concentration dependence of the absorption spectra showed that the amount of J aggregates increased at the expense of a decrease in the number of H aggregates, and fluorescence microscopy reveals that the constituent molecules are approximately aligned along the long axis of the fibers.