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Preparation of Silicophosphate Alternating Hybrid Copolymers via Nonaqueous Acid-Base Reactions of Phosphoric Acid and Organo-Bridged Bis(chlorosilane)

A design of atomic and oligomer level structure in organic-inorganic hybrid materials is highly important for various applications. Nonaqueous acid-base reaction allows us to prepare silicophosphates with controlled inorganic networks (–(O–P–O–Si)(n)) at atomic level because phosphorous and silicon-...

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Autores principales: Okada, Kenji, Takano, Masanari, Tokudome, Yasuaki, Tokuda, Yomei, Takahashi, Masahide
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6983256/
https://www.ncbi.nlm.nih.gov/pubmed/31905676
http://dx.doi.org/10.3390/molecules25010127
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author Okada, Kenji
Takano, Masanari
Tokudome, Yasuaki
Tokuda, Yomei
Takahashi, Masahide
author_facet Okada, Kenji
Takano, Masanari
Tokudome, Yasuaki
Tokuda, Yomei
Takahashi, Masahide
author_sort Okada, Kenji
collection PubMed
description A design of atomic and oligomer level structure in organic-inorganic hybrid materials is highly important for various applications. Nonaqueous acid-base reaction allows us to prepare silicophosphates with controlled inorganic networks (–(O–P–O–Si)(n)) at atomic level because phosphorous and silicon-based precursors can react directly, resulting in an alternating copolymer network. Organic functionalization in those materials has been realized so far by using organic-modified phosphorous acid and/or organo-chlorosilane as precursors. In the present study, silicophosphate oligomers exhibiting inorganic-organic hybrid chains of (–(O–P–O–Si–R–Si)(n)) (R: bridging organic functional groups), are prepared from phosphoric acid and organo-bridged bis(chlorosilane). The 1, 2-bis(chlorodimethylsilyl)ethane ((C(2)H(4))(Me(2)SiCl)(2)) and 1, 4-bis(chlorodimethylsilyl)benzene ((C(6)H(4))(Me(2)SiCl)(2)) were used as organo-bridged bis(chlorosilane). Different types of silicophosphate oligomers with different network structures and terminal groups (P-OH and/or Si-Cl) were prepared by changing the reaction temperature and molar ratio of precursors. The formation of low molecular weight oligomers of ring and cage morphologies (ring tetramer, cage pentamer, and ring hexamer) is suggested in the product prepared from phosphoric acid and (C(6)H(4))(Me(2)SiCl)(2) molecule at 150 °C. Those silicophosphate hybrid oligomers are expected to be used as building blocks of hybrid materials with well-defined network structures for desired functionalities.
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spelling pubmed-69832562020-02-06 Preparation of Silicophosphate Alternating Hybrid Copolymers via Nonaqueous Acid-Base Reactions of Phosphoric Acid and Organo-Bridged Bis(chlorosilane) Okada, Kenji Takano, Masanari Tokudome, Yasuaki Tokuda, Yomei Takahashi, Masahide Molecules Article A design of atomic and oligomer level structure in organic-inorganic hybrid materials is highly important for various applications. Nonaqueous acid-base reaction allows us to prepare silicophosphates with controlled inorganic networks (–(O–P–O–Si)(n)) at atomic level because phosphorous and silicon-based precursors can react directly, resulting in an alternating copolymer network. Organic functionalization in those materials has been realized so far by using organic-modified phosphorous acid and/or organo-chlorosilane as precursors. In the present study, silicophosphate oligomers exhibiting inorganic-organic hybrid chains of (–(O–P–O–Si–R–Si)(n)) (R: bridging organic functional groups), are prepared from phosphoric acid and organo-bridged bis(chlorosilane). The 1, 2-bis(chlorodimethylsilyl)ethane ((C(2)H(4))(Me(2)SiCl)(2)) and 1, 4-bis(chlorodimethylsilyl)benzene ((C(6)H(4))(Me(2)SiCl)(2)) were used as organo-bridged bis(chlorosilane). Different types of silicophosphate oligomers with different network structures and terminal groups (P-OH and/or Si-Cl) were prepared by changing the reaction temperature and molar ratio of precursors. The formation of low molecular weight oligomers of ring and cage morphologies (ring tetramer, cage pentamer, and ring hexamer) is suggested in the product prepared from phosphoric acid and (C(6)H(4))(Me(2)SiCl)(2) molecule at 150 °C. Those silicophosphate hybrid oligomers are expected to be used as building blocks of hybrid materials with well-defined network structures for desired functionalities. MDPI 2019-12-28 /pmc/articles/PMC6983256/ /pubmed/31905676 http://dx.doi.org/10.3390/molecules25010127 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
Okada, Kenji
Takano, Masanari
Tokudome, Yasuaki
Tokuda, Yomei
Takahashi, Masahide
Preparation of Silicophosphate Alternating Hybrid Copolymers via Nonaqueous Acid-Base Reactions of Phosphoric Acid and Organo-Bridged Bis(chlorosilane)
title Preparation of Silicophosphate Alternating Hybrid Copolymers via Nonaqueous Acid-Base Reactions of Phosphoric Acid and Organo-Bridged Bis(chlorosilane)
title_full Preparation of Silicophosphate Alternating Hybrid Copolymers via Nonaqueous Acid-Base Reactions of Phosphoric Acid and Organo-Bridged Bis(chlorosilane)
title_fullStr Preparation of Silicophosphate Alternating Hybrid Copolymers via Nonaqueous Acid-Base Reactions of Phosphoric Acid and Organo-Bridged Bis(chlorosilane)
title_full_unstemmed Preparation of Silicophosphate Alternating Hybrid Copolymers via Nonaqueous Acid-Base Reactions of Phosphoric Acid and Organo-Bridged Bis(chlorosilane)
title_short Preparation of Silicophosphate Alternating Hybrid Copolymers via Nonaqueous Acid-Base Reactions of Phosphoric Acid and Organo-Bridged Bis(chlorosilane)
title_sort preparation of silicophosphate alternating hybrid copolymers via nonaqueous acid-base reactions of phosphoric acid and organo-bridged bis(chlorosilane)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6983256/
https://www.ncbi.nlm.nih.gov/pubmed/31905676
http://dx.doi.org/10.3390/molecules25010127
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