01787nas a2200241   4500008004100000022001400041245013600055210006900191260007700260300001600337490000700353520085500360653002401215653001901239653002901258653002101287653002801308100001801336700002101354700002001375700001901395856013101414       2014                        eng d  a0947-653900aEvolution of an adenine-copper cluster to a highly porous cuboidal framework: solution-phase ripening and gas-adsorption properties0 aEvolution of an adeninecopper cluster to a highly porous cuboida  aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcSEP  a12262-122680 v203 a<p>The synthesis and directed evolution of a tetranu-clear copper cluster, supported by 8-mercapto-N9-propyladenine ligand, to a highly porous three-dimensional cubic framework in the solid state is reported. The structure of this porous framework was unambiguously characterized by Xray crystallography. The framework contains about 62% solvent-accessible void; the presence of a free exocyclic amino group in the porous framework facilitates reversible adsorption of gas and solvent molecules. Oriented growth of framework in solution was also tracked by force and scanning electron microscopy studies, leading to identification of an intriguing ripening process, over a period of 30 days, which also revealed formation of cuboidal aggregates in solution. The elemental composition of these cuboidal aggregates was ascertained by EDAX analysis.</p>10acuboidal frameworks10agas adsorption10ametal-organic frameworks10aOstwald ripening10asolution-phase ripening1 aVenkatesh, V.1 aPachfule, Pradip1 aBanerjee, Rahul1 aVerma, Sandeep  uhttps://library.ncl.res.in/content/evolution-adenine-copper-cluster-highly-porous-cuboidal-framework-solution-phase-ripening-0