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Tetrahedral Tetrakis( p ‐ethynylphenyl) Group IV Compounds in Microporous Polymers: Effect of Tetrel on Porosity
Author(s) -
Uptmoor Andrea C.,
Geyer Florian L.,
Rominger Frank,
Freudenberg Jan,
Bunz Uwe H. F.
Publication year - 2018
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201800214
Subject(s) - microporous material , sonogashira coupling , materials science , monomer , polymer , porosity , polymerization , conjugated microporous polymer , carbon fibers , catalysis , polymer chemistry , chemical engineering , solvent , crystallography , chemistry , organic chemistry , palladium , composite material , composite number , engineering
Three Sonogashira–Hagihara polymerization protocols were applied for the synthesis of conjugated microporous polymers (CMPs) by using group IV tetra( p ‐ethynylphenyl) monomers with 1,4‐diiodobenzene or 1,4‐dibromobenzene. The optical properties and surface areas of the CMPs were compared and related to the preparation conditions and the geometry of the tetrahedral building block as obtained after X‐ray analysis. In each series, surface areas decreased—independently from the chosen parameters of catalyst, base, and solvent—from carbon‐centered CMPs (1595 m 2 g −1 ) to silicon‐, germanium‐, and tin‐centered (649 m 2 g −1 ) networks.