01493nas a2200217   4500008004100000245007900041210006900120260000800189300001600197490000700213520077400220100001800994700002401012700001901036700002101055700001501076700002501091700002501116700002001141856011401161       2016                        eng d00aChemically delaminated free-standing ultrathin covalent organic nanosheets0 aChemically delaminated freestanding ultrathin covalent organic n  cDEC  a15604-156080 v553 aCovalent organic nanosheets (CONs) are a new class of porous thin two-dimensional (2D) nanostructures that can be easily designed and functionalized and could be useful for separation applications. Poor dispersion, layer restacking, and difficult postsynthetic modifications are the major hurdles that need to be overcome to fabricate scalable CON thin films. Herein, we present a unique approach for the chemical exfoliation of an anthracene-based covalent organic framework (COF) to N-hexylmaleimide-functionalized CONs, to yield centimeter-sized free-standing thin films through layer-by-layer CON assembly at the air-water interface. The thinlayer fabrication technique presented here is simple, scalable, and does not require any surfactants or stabilizing agents.1 aKhayum, Abdul1 aKandambeth, Sharath1 aMitra, Shouvik1 aNair, Sanoop, B.1 aDas, Anuja1 aNagane, Samadhan, S.1 aMukherjee, Rabibrata1 aBanerjee, Rahul  uhttps://library.ncl.res.in/content/chemically-delaminated-free-standing-ultrathin-covalent-organic-nanosheets01516nas a2200181   4500008004100000245010100041210006900142260000800211300001400219490000700233520087300240100001801113700002001131700001501151700002501166700002001191856012301211       2016                        eng d00aSelf-exfoliated metal-organic nanosheets through hydrolytic unfolding of metal-organic polyhedra0 aSelfexfoliated metalorganic nanosheets through hydrolytic unfold  cMAY  a7361-73660 v233 aFew-layers thick metal-organic nanosheets have been synthesized using water-assisted solid-state transformation through a combined top-down and bottom-up approach. The metal-organic polyhedra (MOPs) convert into metal-organic frameworks (MOFs) which subsequently selfexfoliate into few-layered metal-organic nanosheets. These MOP crystals experience a hydrophobicity gradient with the inner surface during contact with water because of the existence of hydrophobic spikes on their outer surface. When the amount of water available for interaction is higher, the resultant layers are not stacked to form bulk materials; instead few-layered nanosheets with high uniformity were obtained in high yield. The phenomenon has resulted high yield production of uniformly distributed layered metal-organic nanosheets from three different MOPs, showing its general adaptability.1 aGarai, Bikash1 aMallick, Arijit1 aDas, Anuja1 aMukherjee, Rabibrata1 aBanerjee, Rahul  uhttps://library.ncl.res.in/content/self-exfoliated-metal-organic-nanosheets-through-hydrolytic-unfolding-metal-organic