01737nas a2200157   4500008004100000022001400041245009500055210006900150260011000219300001200329490000700341520105000348100002401398700003001422856012701452       2011                        eng d  a1144-054600aMany manifestations of digestive ripening: monodispersity, superlattices and nanomachining0 aMany manifestations of digestive ripening monodispersity superla  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN  a755-7630 v353 a<p>Digestive ripening has now been established as a very convenient route to obtain monodisperse nanoparticles from polydisperse ones by refluxing the latter in the presence of an excess ligand. Many ligands including long chain thiols, amines, or phosphines have been shown to be effective digestive ripening agents. It is hypothesized that the surface active groups of such digestive ripening agents bind and remove reactive surface atoms/clusters from big nanoparticles and redeposit them on smaller nanoparticles. In this way, large particles become smaller, while small particles become larger, and eventually, an equilibrium size is obtained that is specific to each of the digestive ripening agents used. Herein, the digestive ripening procedure is reviewed, discussed and its utility spanning the preparation of monodispersed metal nanoparticles, alloy nanoparticles, superlattice structures and the most interesting nano-machining (wherein the monodisperse particles can be reverted back to the polydisperse system) is demonstrated.</p>1 aSidhaye, Deepti, S.1 aPrasad, Bhagavatula L. V.  uhttps://library.ncl.res.in/content/many-manifestations-digestive-ripening-monodispersity-superlattices-and-nanomachining-0