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Tunable Hydrogen Release from Amine–Boranes via their Insertion into Functional Polystyrenes
Author(s) -
Ledoux Audrey,
Brunet Juliette,
Raynaud Jean,
Lacôte Emmanuel
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201904898
Subject(s) - dehydrogenation , polystyrene , amine gas treating , boranes , copolymer , polymer chemistry , chemistry , materials science , thermal stability , chemical engineering , combinatorial chemistry , organic chemistry , catalysis , polymer , boron , engineering
Polystyrene‐g‐boramine random copolymers are dihydrogen reservoirs with tunable dehydrogenation temperatures, which can be adjusted by selecting the boramine content in the copolymers. They display a unique dihydrogen thermal release profile, which is a direct consequence of the insertion of the amine–boranes in a polymeric scaffold, and not from a direct modification of the electronics or sterics of the amine–borane function. Finally, the mixture of polystyrene‐g‐boramines with conventional NH 3 ‐BH 3 (borazane) allows for a direct access to organic/inorganic hybrid dihydrogen reservoirs with a maximal H 2 loading of 8 wt %. These exhibit a dehydrogenation temperature lower than that of either the borazane or the polystyrene‐g‐boramines taken separately.