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New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes

Two kinds of novel nanoporous polycondensates (sc(Rf)) have been synthesized by two new preparation methods consisting of polycondensation and highly selective photocyclicaromataization of 1/3 helical cis-cis polyphenylacetylenes with polymerizable groups. By the original methods, new well-defined s...

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Autores principales: Zang, Yu, Aoki, Toshiki, Teraguchi, Masahiro, Kaneko, Takashi, Jia, Hongge, Ma, Liqun, Miao, Fengjuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6631047/
https://www.ncbi.nlm.nih.gov/pubmed/31195695
http://dx.doi.org/10.3390/nano9060859
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author Zang, Yu
Aoki, Toshiki
Teraguchi, Masahiro
Kaneko, Takashi
Jia, Hongge
Ma, Liqun
Miao, Fengjuan
author_facet Zang, Yu
Aoki, Toshiki
Teraguchi, Masahiro
Kaneko, Takashi
Jia, Hongge
Ma, Liqun
Miao, Fengjuan
author_sort Zang, Yu
collection PubMed
description Two kinds of novel nanoporous polycondensates (sc(Rf)) have been synthesized by two new preparation methods consisting of polycondensation and highly selective photocyclicaromataization of 1/3 helical cis-cis polyphenylacetylenes with polymerizable groups. By the original methods, new well-defined sheet polymers having nanopores or nanospaces have been synthesized for the first time. Their composite membranes, containing small amounts (1.0 wt%) of sc(Rf), had ultrahigh oxygen permeability (Po(2) > 1000 barrer), and their plots were beyond the Robeson’s upper bound line in the graph of oxygen permselectivity (α = Po(2)/P(N2)) versus Po(2). Both α and Po(2) values were enhanced by adding only small amounts (1.0 wt%) of sc(Rf). One of the sc(Rf)s synthesized on the base membrane surface showed the best performance, i.e., Po(2) = 5300 barrer and α = 2.5. The membrane surface was effectively covered by sc(Rf), judging from the contact angle values. It is thought that nanopores and nanospaces created in and between sc(Rf) molecules played an important role for the enhancement of both α and Po(2)/P(N2).
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spelling pubmed-66310472019-08-19 New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes Zang, Yu Aoki, Toshiki Teraguchi, Masahiro Kaneko, Takashi Jia, Hongge Ma, Liqun Miao, Fengjuan Nanomaterials (Basel) Article Two kinds of novel nanoporous polycondensates (sc(Rf)) have been synthesized by two new preparation methods consisting of polycondensation and highly selective photocyclicaromataization of 1/3 helical cis-cis polyphenylacetylenes with polymerizable groups. By the original methods, new well-defined sheet polymers having nanopores or nanospaces have been synthesized for the first time. Their composite membranes, containing small amounts (1.0 wt%) of sc(Rf), had ultrahigh oxygen permeability (Po(2) > 1000 barrer), and their plots were beyond the Robeson’s upper bound line in the graph of oxygen permselectivity (α = Po(2)/P(N2)) versus Po(2). Both α and Po(2) values were enhanced by adding only small amounts (1.0 wt%) of sc(Rf). One of the sc(Rf)s synthesized on the base membrane surface showed the best performance, i.e., Po(2) = 5300 barrer and α = 2.5. The membrane surface was effectively covered by sc(Rf), judging from the contact angle values. It is thought that nanopores and nanospaces created in and between sc(Rf) molecules played an important role for the enhancement of both α and Po(2)/P(N2). MDPI 2019-06-05 /pmc/articles/PMC6631047/ /pubmed/31195695 http://dx.doi.org/10.3390/nano9060859 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zang, Yu
Aoki, Toshiki
Teraguchi, Masahiro
Kaneko, Takashi
Jia, Hongge
Ma, Liqun
Miao, Fengjuan
New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes
title New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes
title_full New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes
title_fullStr New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes
title_full_unstemmed New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes
title_short New Synthetic Methods of Novel Nanoporous Polycondensates and Excellent Oxygen Permselectivity of Their Composite Membranes
title_sort new synthetic methods of novel nanoporous polycondensates and excellent oxygen permselectivity of their composite membranes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6631047/
https://www.ncbi.nlm.nih.gov/pubmed/31195695
http://dx.doi.org/10.3390/nano9060859
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