01273nas a2200169   4500008004100000022001400041245012200055210006900177260007100246300001400317490000800331520057600339100002000915700002000935700001800955856013000973       2012                        eng d  a1932-744700aUltrasmall gold cluster arrays encapsulated in silica nanospheres: applications in fluorescence imaging and catalysis0 aUltrasmall gold cluster arrays encapsulated in silica nanosphere  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJAN  a1748-17540 v1163 a<p>Facile synthesis of ultrasmall gold nanoclusters of size &lt;2 nm dispersible in water using a novel quaternary ammonium ligand is reported. Further, arrays of these nanoclusters are encapsulated in monodisperse silica nanospheres of size 25-30 nm. The photophysical characteristics of the clusters are found to be intact upon encapsulation, rendering the resulting composite material ideal for fluorescence imaging applications. We have further shown the utilization of these materials in catalysis as precursors for Au nanopartides encapsulated in porous silica.</p>1 aSamanta, Anupam1 aDhar, Basab, B.1 aDevi, Nandini  uhttps://library.ncl.res.in/content/ultrasmall-gold-cluster-arrays-encapsulated-silica-nanospheres-applications-fluorescence-0