01344nas a2200205   4500008004100000022001400041245010500055210006900160260007300229300001200302490000800314520055700322653002100879653002300900653001500923653001800938100002100956700003000977856013101007       2014                        eng d  a0927-775700aDilution does the trick: role of mixed solvent evaporation in controlling nanoparticle self-assembly0 aDilution does the trick role of mixed solvent evaporation in con  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAPR  a142-1470 v4473 a<p>An easy and convenient way to prepare superlattices of amine capped gold nanoparticles is presented. It is clearly established that solvent evaporation significantly influences the nature of resulting superlattices and critically governs whether monolayer or multilayer superlattices are formed. More specifically, it is demonstrated that dilution of the nanoparticle dispersion with a similar solvent (but with different vapour pressure) is an expedient handle to control the nature of self-assembly. (C) 2014 Elsevier B.V. All rights reserved.</p>10aEvaporation rate10agold nanoparticles10aNucleation10aSelf-assembly1 aSahu, Puspanjali1 aPrasad, Bhagavatula L. V.  uhttps://library.ncl.res.in/content/dilution-does-trick-role-mixed-solvent-evaporation-controlling-nanoparticle-self-assembly-001724nas a2200181   4500008004100000245006700041210006700108260000800175300001400183490000700197520113800204100002101342700001901363700001701382700001701399700003001416856009601446       2017                        eng d00aDigestive ripening of Au nanoparticles by multidentate ligands0 aDigestive ripening of Au nanoparticles by multidentate ligands  cJAN  a1943-19500 v333 a<p>The efficiency of multidentate ligands as digestive ripening agents for the preparation of monodisperse Au nanoparticles was investigated. This systematic investigation was performed using ligands possessing one, two, or three thiol moieties as ligands/digestive ripening agents. Our results clearly establish that among the different ligands, those that are monodentate and the use of temperatures in the range of 60 °C and 120 °C offer the best conditions for digestive ripening. In addition, when digestive ripening was carried out at lower temperatures (e.g., 60 °C), the nanoparticle size increased as the number of thiol groups per ligand increased. However, in the case of ligands possessing two and three thiol moieties when they are heated with polydispersed particles at higher temperatures (120 °C or 180 °C), the etching process dominates, which affects the quality of the nanoparticles in terms of their monodispersity. We conclude that the temperature-dependent strength of the interaction between the ligand headgroup and the nanoparticle surface plays a vital role in controlling the final particle sizes.</p>1 aSahu, Puspanjali1 aShimpi, Jayesh1 aLee, Han, Ju1 aLee, Randall1 aPrasad, Bhagavatula, L. V  uhttps://library.ncl.res.in/content/digestive-ripening-au-nanoparticles-multidentate-ligands