Preparation of inorganic-organic hybrid gels by radical exchange reaction using TiO2 nanoparticles modified with organophosphonic acid bearing C-ON bonds

Kohei Kaneta; Seiichi Tahara; Naokazu Idota; Yoshiyuki Sugahara

doi:10.1016/j.matpr.2019.05.291

Preparation of inorganic-organic hybrid gels by radical exchange reaction using TiO₂ nanoparticles modified with organophosphonic acid bearing C-ON bonds

Kohei Kaneta, Seiichi Tahara, Naokazu Idota, Yoshiyuki Sugahara^*

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

Inorganic-organic hybrid gels were prepared using TiO₂ nanoparticles modified with organophosphonic acid bearing C-ON bonds by a radical exchange reaction. The modification of TiO₂ with N-tert-butyl-N-(1-dihydroxyphosphoryl-2,2-dimetylpropyl)aminoxymethyl benzene (DEPN-BA) and isodecyl phosphonic acid (IDP) was confirmed by IR and ³¹P MAS NMR. ESR spectroscopy indicated the presence of nitroxide radicals with heating of the modified nanoparticles at 120C. Hybrid gels were prepared using TiO₂ nanoparticles, which were modified with DEPN-BA and IDP (IDP_DEPN-BA_TiO₂), and a poly(4vinylbenzyl chloride) derivative bearing C-ON bonds (PCMS-TEMPO). It was found that the radical exchange reaction with CON bonds was necessary for preparing hybrid gels. It is assumed that a three-dimensional network was formed by crosslinking between the polymers and modified TiO₂ nanoparticles.

Original language	English
Pages (from-to)	180-186
Number of pages	7
Journal	Materials Today: Proceedings
Volume	16
DOIs	https://doi.org/10.1016/j.matpr.2019.05.291
Publication status	Published - 2019
Event	6th International Symposium on Advanced Ceramics, ISAC 2018 - Sendai, Japan Duration: 2018 Mar 10 → 2018 Mar 12

Keywords

Dynamic covalent bond
Hybrid gel
Radical exchange reaction
Surface modification
TiO nanoparticle

ASJC Scopus subject areas

Materials Science(all)

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10.1016/j.matpr.2019.05.291

Cite this

@article{26674a0300504886970c7fad60d0f03f,

title = "Preparation of inorganic-organic hybrid gels by radical exchange reaction using TiO2 nanoparticles modified with organophosphonic acid bearing C-ON bonds",

abstract = "Inorganic-organic hybrid gels were prepared using TiO2 nanoparticles modified with organophosphonic acid bearing C-ON bonds by a radical exchange reaction. The modification of TiO2 with N-tert-butyl-N-(1-dihydroxyphosphoryl-2,2-dimetylpropyl)aminoxymethyl benzene (DEPN-BA) and isodecyl phosphonic acid (IDP) was confirmed by IR and 31P MAS NMR. ESR spectroscopy indicated the presence of nitroxide radicals with heating of the modified nanoparticles at 120C. Hybrid gels were prepared using TiO2 nanoparticles, which were modified with DEPN-BA and IDP (IDP_DEPN-BA_TiO2), and a poly(4vinylbenzyl chloride) derivative bearing C-ON bonds (PCMS-TEMPO). It was found that the radical exchange reaction with CON bonds was necessary for preparing hybrid gels. It is assumed that a three-dimensional network was formed by crosslinking between the polymers and modified TiO2 nanoparticles.",

keywords = "Dynamic covalent bond, Hybrid gel, Radical exchange reaction, Surface modification, TiO nanoparticle",

author = "Kohei Kaneta and Seiichi Tahara and Naokazu Idota and Yoshiyuki Sugahara",

note = "Funding Information: This work was supported by a Grant-in-Aid for Scientific Research on Innovative Areas “New Polymeric Materials Based on Element-Blocks (No. 2401)” (24102002) of The Ministry of Education, Culture, Sports, Science, and Technology, Japan. Publisher Copyright: {\textcopyright} 2019 Published by Elsevier Ltd. Selection and/or Peer-review under responsibility of 6th International Symposium on Advanced Ceramics.; 6th International Symposium on Advanced Ceramics, ISAC 2018 ; Conference date: 10-03-2018 Through 12-03-2018",

year = "2019",

doi = "10.1016/j.matpr.2019.05.291",

language = "English",

volume = "16",

pages = "180--186",

journal = "Materials Today: Proceedings",

issn = "2214-7853",

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T1 - Preparation of inorganic-organic hybrid gels by radical exchange reaction using TiO2 nanoparticles modified with organophosphonic acid bearing C-ON bonds

AU - Kaneta, Kohei

AU - Tahara, Seiichi

AU - Idota, Naokazu

AU - Sugahara, Yoshiyuki

N1 - Funding Information: This work was supported by a Grant-in-Aid for Scientific Research on Innovative Areas “New Polymeric Materials Based on Element-Blocks (No. 2401)” (24102002) of The Ministry of Education, Culture, Sports, Science, and Technology, Japan. Publisher Copyright: © 2019 Published by Elsevier Ltd. Selection and/or Peer-review under responsibility of 6th International Symposium on Advanced Ceramics.

PY - 2019

Y1 - 2019

N2 - Inorganic-organic hybrid gels were prepared using TiO2 nanoparticles modified with organophosphonic acid bearing C-ON bonds by a radical exchange reaction. The modification of TiO2 with N-tert-butyl-N-(1-dihydroxyphosphoryl-2,2-dimetylpropyl)aminoxymethyl benzene (DEPN-BA) and isodecyl phosphonic acid (IDP) was confirmed by IR and 31P MAS NMR. ESR spectroscopy indicated the presence of nitroxide radicals with heating of the modified nanoparticles at 120C. Hybrid gels were prepared using TiO2 nanoparticles, which were modified with DEPN-BA and IDP (IDP_DEPN-BA_TiO2), and a poly(4vinylbenzyl chloride) derivative bearing C-ON bonds (PCMS-TEMPO). It was found that the radical exchange reaction with CON bonds was necessary for preparing hybrid gels. It is assumed that a three-dimensional network was formed by crosslinking between the polymers and modified TiO2 nanoparticles.

AB - Inorganic-organic hybrid gels were prepared using TiO2 nanoparticles modified with organophosphonic acid bearing C-ON bonds by a radical exchange reaction. The modification of TiO2 with N-tert-butyl-N-(1-dihydroxyphosphoryl-2,2-dimetylpropyl)aminoxymethyl benzene (DEPN-BA) and isodecyl phosphonic acid (IDP) was confirmed by IR and 31P MAS NMR. ESR spectroscopy indicated the presence of nitroxide radicals with heating of the modified nanoparticles at 120C. Hybrid gels were prepared using TiO2 nanoparticles, which were modified with DEPN-BA and IDP (IDP_DEPN-BA_TiO2), and a poly(4vinylbenzyl chloride) derivative bearing C-ON bonds (PCMS-TEMPO). It was found that the radical exchange reaction with CON bonds was necessary for preparing hybrid gels. It is assumed that a three-dimensional network was formed by crosslinking between the polymers and modified TiO2 nanoparticles.

KW - Dynamic covalent bond

KW - Hybrid gel

KW - Radical exchange reaction

KW - Surface modification

KW - TiO nanoparticle

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