10.1021/acs.macromol.7b01458.s001
Jianjun Wang
Jianjun
Wang
Jun Li
Jun
Li
Toshiki Aoki
Toshiki
Aoki
Takashi Kaneko
Takashi
Kaneko
Masahiro Teraguchi
Masahiro
Teraguchi
Zhichun Shi
Zhichun
Shi
Hongge Jia
Hongge
Jia
Subnanoporous Highly Oxygen Permselective Membranes
from Poly(conjugated hyperbranched macromonomer)s Synthesized by One-Pot
Simultaneous Two-Mode Homopolymerization of 1,3-Bis(silyl)phenylacetylene
Using a Single Rh Catalytic System: Control of Their Structures and
Permselectivities
American Chemical Society
2017
amine cocatalysts
RB
P O 2
SiH groups
acetylene-type macromonomers
addition polymerization
bond
Permselectivities Novel
i.e
subnanoporous oxygen permselective membrane materials
polymer structures
oxygen permselectivities
AB 2
Oxygen Permselective Membranes
polymer membranes
Single Rh Catalytic System
Two-Mode Homopolymerization
oxygen permeabilities
two-mode homopolymerization
2017-09-13 18:03:45
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Subnanoporous_Highly_Oxygen_Permselective_Membranes_from_Poly_conjugated_hyperbranched_macromonomer_s_Synthesized_by_One-Pot_Simultaneous_Two-Mode_Homopolymerization_of_1_3-Bis_silyl_phenylacetylene_Using_a_Single_Rh_Catalytic_System_Control_of_Their_Stru/5404552
Novel
well-defined complex polymers, polymers of acetylene-type
macromonomers having silylene–vinylene–phenylene–ethynylene
hyperbranches, investigated as a new class of subnanoporous oxygen
permselective membrane materials, were synthesized very easily by
one-pot simultaneous two-mode homopolymerization of a single monomer
with a single catalyst. For this “simultaneous polymerization”
we synthesized AB<sub>2</sub>-type monomers (1,3-bis(dimethylsilyl)phenylacetylenes)
containing one terminal triple bond and two Si–H groups. The
resulting poly(hyperbranched macromonomer)s had high molecular weights,
low densities, high solubility, and good self-membrane forming ability.
They had higher oxygen permselectivities (α = <i>P</i><sub>O<sub>2</sub></sub>/<i>P</i><sub>N<sub>2</sub></sub>) than any other reported polymers having similar oxygen permeabilities
(<i>P</i><sub>O<sub>2</sub></sub>). These excellent polymer
membranes could be obtained only by the simultaneous polymerization.
In the one-pot simultaneous polymerization, the two different modes
of polymerizations, i.e., addition polymerization of the triple bond
and polyaddition of the triple bond and two SiH groups in the single
monomer, occurred simultaneously by using one catalytic system, i.e.,
[Rh(norbornadiene)Cl]<sub>2</sub>/various amines. The ratio of the
branches (<b>RB</b>), i.e., the addition polymerization and
the polyaddition, could be controlled by changing the amine cocatalysts.
Their oxygen permselectivities could be adjusted by controlling the
polymer structures including <b>RB</b>.