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Hexaphenyl‐ p ‐xylene: A Rigid Pseudo‐Octahedral Core at the Service of Three‐Dimensional Porous Frameworks
Author(s) -
Schade Alexandra,
Monnereau Laure,
Muller Thierry,
Bräse Stefan
Publication year - 2014
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201402093
Subject(s) - octahedron , polymer , porosity , monomer , alkyne , materials science , thermal stability , cycloaddition , p xylene , sorption , polymer chemistry , chemistry , chemical engineering , crystallography , organic chemistry , catalysis , composite material , adsorption , crystal structure , engineering
Herein, we report three different hyper‐cross‐linked polymers (HCPs), which were synthesised by means of copper‐catalysed Huisgen 1,3‐dipolar cycloaddition (CuAAC). These polymers represent novel porous networks as these are the first examples of frameworks based on a rigid pseudo‐octahedral monomer ( para ‐substituted hexaphenyl‐ p ‐xylene)—a sixfold functionalised core. The porous “click” HCPs are insoluble in common organic solvents as well as in strong acids and bases and show a high thermal stability. Their porosity was confirmed by sorption measurements using nitrogen gas at 77 K. The highest Brunauer–Emmett–Teller (BET) surface area of 725 m 2 g −1 was obtained by a combination of the tetrahedral tetrakisphenylmethane‐azide and the pseudo‐octahedral hexaphenyl‐ p ‐xylene‐alkyne (1,4‐ditritylbenzene‐alkyne).