Nanosized Organo-Silica Particles with “Built-In” Surface-Initiated Atom Transfer Radical Polymerization Capability as a Platform for Brush Particle Synthesis

Han, Jin; Zhai, Yue; Wang, Zongyu; Bleuel, Markus; Liu, Tong; Yin, Rongguan; Wu, Wenjie; Hakem, Ilhem; Karim, Alamgir; Matyjaszewski, Krzysztof; Bockstaller, Michael R.

doi:10.1021/acsmacrolett.0c00502

Nanosized Organo-Silica Particles with “Built-In” Surface-Initiated Atom Transfer Radical Polymerization Capability as a Platform for Brush Particle Synthesis

Journal Article · Mon Aug 17 00:00:00 EDT 2020 · ACS Macro Letters

DOI:https://doi.org/10.1021/acsmacrolett.0c00502· OSTI ID:1656835

Han, Jin ^[1]; Zhai, Yue ^[2]; Wang, Zongyu ^[2]; Bleuel, Markus ^[3]; Liu, Tong ^[2]; Yin, Rongguan ^[2]; Wu, Wenjie ^[4]; Hakem, Ilhem ^[2]; ^[4]; ^[2]; ^[2]

Carnegie Mellon University, Pittsburgh, PA (United States); Zhejiang University of Technology (China); Carnegie Mellon University
Carnegie Mellon University, Pittsburgh, PA (United States)
National Institute of Standards and Technology (NIST), Gaithersburg, MD (United States); University of Maryland, College Park, MD (United States)
University of Houston, TX (United States)

A facile synthetic method was developed to prepare sub-5 nm organo-silica (oSiO₂) nanoparticles through the self-condensation of ATRP-initiator-containing silica precursors. The obtained oSiO₂ nanoparticles were characterized by a combination of nuclear magnetic resonance (NMR), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), dynamic light scattering (DLS) and small-angle neutron scattering (SANS). The accessibility of the surface -Br initiating sites was evaluated by the polymerization of poly(methyl methacrylate) (PMMA) ligands from the surface of the oSiO₂ nanoparticles using surface-initiated atom transfer radical polymerization (SI-ATRP). Here, the ultra-small size, tunable composition and ease of surface modification may render these organosilica nanoparticle systems with built-in SI-ATRP capability an interesting alternative to conventional silica nanoparticles for functional material design.

View Accepted Manuscript (DOE)

Research Organization:: Carnegie Mellon University, Pittsburgh, PA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0018784

OSTI ID:: 1656835

Journal Information:: ACS Macro Letters, Journal Name: ACS Macro Letters Vol. 9; ISSN 2161-1653

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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