Tunable Porous Organic Crystals: Structural Scope and Adsorption Properties of Nanoporous Steroidal Ureas
作者:Ramalingam Natarajan、Lydia Bridgland、Anchalee Sirikulkajorn、Ji-Hun Lee、Mairi F. Haddow、Germinal Magro、Bakhat Ali、Sampriya Narayanan、Peter Strickland、Jonathan P. H. Charmant、A. Guy Orpen、Neil B. McKeown、C. Grazia Bezzu、Anthony P. Davis
DOI:10.1021/ja405701u
日期:2013.11.13
Previous work has shown that certain steroidal bis-(N-phenyl)ureas, derived from cholic acid, form crystals in the P61 space group with unusually wide unidimensional pores. A key feature of the nanoporous steroidal urea (NPSU) structure is that groups at either end of the steroid are directed into the channels and may in principle be altered without disturbing the crystal packing. Herein we report an expanded
作者:Ramalingam Natarajan、Germinal Magro、Lydia N. Bridgland、Anchalee Sirikulkajorn、Sampriya Narayanan、Lloyd E. Ryan、Mairi F. Haddow、A. Guy Orpen、Jonathan P. H. Charmant、Andrew J. Hudson、Anthony P. Davis
DOI:10.1002/anie.201105216
日期:2011.11.25
Crystal tuning: Organic molecules can be xenophobic, preferring to crystallize with their own kind. Though useful for purification, this precludes the tuning of crystal properties by doping or mixing. Nanoporous steroids provide an exception, as their channels can accept a variety of termini (hexagons and spheres). The steroids can be cocrystallized in any ratio to give a wide range of chiral, potentially
Water Chains in Hydrophobic Crystal Channels: Nanoporous Materials as Supramolecular Analogues of Carbon Nanotubes
作者:Ramalingam Natarajan、Jonathan P. H. Charmant、A. Guy Orpen、Anthony P. Davis
DOI:10.1002/anie.201002418
日期:——
Pore design: Nanoporous steroidal crystals can be engineered for a range of channel properties. For example, the walls may be coated with aromatic groups to mimic the interior of carbonnanotubes (CNTs). The pores in these structures are occupied by “water wires”, as proposed for water in CNTs themselves.
Cholanamide components for organic alloys; expanding the scope of nanoporous steroidal ureas
作者:Leana Travaglini、Lydia N. Bridgland、Anthony P. Davis
DOI:10.1039/c4cc01256a
日期:——
Amide-linked side-chains can substitute for esters in crystalline nanoporous steroidal ureas (NSPUs). This efficient conjugation method increases the versatility of NPSUs, and should aid the inclusion of complex functional units in the crystal channels.