Morphology and size control of mesoporous ORMOSIL particles prepared from ternary organosilane mixture

Gyu Il Jung, Jung Soo Kim, Sang Man Koo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Tailored mesoporous ORMOSIL particles, having various morphologies such as raspberry shaped, hollow, and rattle type structures, were synthesized by a selective dissolution of organosiloxane networks in ternary ORMOSIL particles preprared using a simple two-step process. The first step, synthesis of monodisperse ORMOSIL particles with multi-layered structure, comprised a one-pot process in an aqueous solution using ternary mixture from three organosilane monomers, 3-aminopropyl-trimethoxysilane (APTMS), vinyl-trimethoxysilane (VTMS), and phenyltrimethoxysilane (PTMS). In the second step, the ORMOSIL particles were treated with a mixture of water and alcohol with mild heating. This mild etching process was employed to dissolve selectively some of organosiloxnae networks within the ORMOSIL particles but not their main silica frameworks, leading to formation of mesoporous particles. Surface roughness, shell thickness, and size of the resultant particles were controlled by manipulating synthetic parameters such as the relative concentration of the silane monomers. Compared to the previously developed synthetic methods, our method offers a simple, economical, and environmentally friendly way to produce complicated mesoporous ORMOSIL particles that can provide several novel properties favorable for practical applications.

Original languageEnglish
Title of host publicationNSTI
Subtitle of host publicationAdvanced Materials - TechConnect Briefs 2015
EditorsBart Romanowicz, Matthew Laudon
PublisherTaylor and Francis Inc.
Pages227-230
Number of pages4
Volume1
ISBN (Electronic)9781498747271
StatePublished - 2015 Jan 1
Event10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 18th Annual Nanotech Conference and Expo, and the 2015 National SBIR/STTR Conference - Washington, United States
Duration: 2015 Jun 142015 Jun 17

Other

Other10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 18th Annual Nanotech Conference and Expo, and the 2015 National SBIR/STTR Conference
CountryUnited States
CityWashington
Period15/06/1415/06/17

Fingerprint

Monomers
Silanes
Particle Size
Silicon Dioxide
Heating
Etching
Dissolution
Alcohols
Surface roughness
Silica
Water
phenyltrimethoxysilane
trimethoxysilane
3-aminopropyltrimethoxysilane
Rubus

Keywords

  • Mesoporous
  • Morphology
  • Ormosil
  • Selective dissolution
  • Size control

Cite this

Jung, G. I., Kim, J. S., & Koo, S. M. (2015). Morphology and size control of mesoporous ORMOSIL particles prepared from ternary organosilane mixture. In B. Romanowicz, & M. Laudon (Eds.), NSTI: Advanced Materials - TechConnect Briefs 2015 (Vol. 1, pp. 227-230). Taylor and Francis Inc..
Jung, Gyu Il ; Kim, Jung Soo ; Koo, Sang Man. / Morphology and size control of mesoporous ORMOSIL particles prepared from ternary organosilane mixture. NSTI: Advanced Materials - TechConnect Briefs 2015. editor / Bart Romanowicz ; Matthew Laudon. Vol. 1 Taylor and Francis Inc., 2015. pp. 227-230
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Jung, GI, Kim, JS & Koo, SM 2015, Morphology and size control of mesoporous ORMOSIL particles prepared from ternary organosilane mixture. in B Romanowicz & M Laudon (eds), NSTI: Advanced Materials - TechConnect Briefs 2015. vol. 1, Taylor and Francis Inc., pp. 227-230, 10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 18th Annual Nanotech Conference and Expo, and the 2015 National SBIR/STTR Conference, Washington, United States, 15/06/14.

Morphology and size control of mesoporous ORMOSIL particles prepared from ternary organosilane mixture. / Jung, Gyu Il; Kim, Jung Soo; Koo, Sang Man.

NSTI: Advanced Materials - TechConnect Briefs 2015. ed. / Bart Romanowicz; Matthew Laudon. Vol. 1 Taylor and Francis Inc., 2015. p. 227-230.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - Tailored mesoporous ORMOSIL particles, having various morphologies such as raspberry shaped, hollow, and rattle type structures, were synthesized by a selective dissolution of organosiloxane networks in ternary ORMOSIL particles preprared using a simple two-step process. The first step, synthesis of monodisperse ORMOSIL particles with multi-layered structure, comprised a one-pot process in an aqueous solution using ternary mixture from three organosilane monomers, 3-aminopropyl-trimethoxysilane (APTMS), vinyl-trimethoxysilane (VTMS), and phenyltrimethoxysilane (PTMS). In the second step, the ORMOSIL particles were treated with a mixture of water and alcohol with mild heating. This mild etching process was employed to dissolve selectively some of organosiloxnae networks within the ORMOSIL particles but not their main silica frameworks, leading to formation of mesoporous particles. Surface roughness, shell thickness, and size of the resultant particles were controlled by manipulating synthetic parameters such as the relative concentration of the silane monomers. Compared to the previously developed synthetic methods, our method offers a simple, economical, and environmentally friendly way to produce complicated mesoporous ORMOSIL particles that can provide several novel properties favorable for practical applications.

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Jung GI, Kim JS, Koo SM. Morphology and size control of mesoporous ORMOSIL particles prepared from ternary organosilane mixture. In Romanowicz B, Laudon M, editors, NSTI: Advanced Materials - TechConnect Briefs 2015. Vol. 1. Taylor and Francis Inc. 2015. p. 227-230