Adsorption study of a macro-RAFT agent onto SiO 2 -coated Gd 2 O 3 :Eu 3+ nanorods: Requirements and limitations

Zou, Hua; Melro, Liliana; Chaparro, Thaíssa de Camargo; Filho, Isnaldi Rodrigues de Souza; Ananias, Duarte; Bourgeat‐Lami, Élodie; Santos, Amilton M.; Barros‐Timmons, Ana

doi:10.1016/j.apsusc.2016.10.141

Cited by 12 publications

(3 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, adsorption of the macroRAFT onto the surface to obtain stable colloids (which is crucial for successful REEP) has proven rather complex as it depends on the chemical and structural characteristics of the nanoparticles surface as well as of the chemical and structural characteristics of the macroRAFT used. Bourgeat-Lami et al and Barros-Timmons et al have reported studies which highlight these issues [121,122].…”

Section: Raft Polymerizationmentioning

confidence: 99%

Polymer@gold Nanoparticles Prepared via RAFT Polymerization for Opto-Biodetection

2018

Self Cite

View full text Add to dashboard Cite

Colloidal gold nanoparticles (Au NPs) have been used in several biological applications, which include the exploitation of size-and shape-dependent Localized Surface Plasmon Resonance (LSPR) in biosensing devices. In order to obtain functional and stable Au NPs in a physiological medium, surface modification and functionalization are crucial steps in these endeavors. Reversible addition-fragmentation chain transfer (RAFT) polymerization meets this need offering the possibility of control over the composition and architecture of polymeric shells coating Au NPs. Furthermore, playing with a careful choice of monomers, RAFT polymerization allows the possibility to design a polymer shell with the desired functional groups aiming at Au based nanocomposites suitable for biorecognition and biotargeting. This review provides important aspects concerning the synthesis and optical properties of Au NPs as well as concepts of RAFT polymerization. Understanding these concepts is crucial to appreciate the chemical strategies available towards RAFT-polymer coated Au core-shell nanostructures, which are here reviewed. Finally, examples of applications in opto-biodetection devices are provided and the potential of responsive "smart" nanomaterials based on such structures can be applied to other biological applications.

show abstract

Section: Raft Polymerizationmentioning

confidence: 99%

Polymer@gold Nanoparticles Prepared via RAFT Polymerization for Opto-Biodetection

2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…Generally, three primary approaches have been employed for producing core–shell nanostructure nanohybrids: direct synthesis, − grafting-to, − and grafting-from approaches. − The macro-RAFT-mediated grafting-from approach is one of the most useful ways to encapsulate a range of NPs including gold NPs, − silver NPs, , iron oxide NPs, quantum dots (QDs), silica (SiO 2 ), − titania (TiO 2 ), phthalocyanine blue (PB), calcium carbonate (CaCO 3 ), montmorillonite clay, − etc. Typically, Nguyen et al were the first to report the application of this strategy to hydrophilic inorganic pigments (represented by zirconia and aluminum-coated titanium dioxide) and hydrophobic organic pigments (represented by PB).…”

Section: Introductionmentioning

confidence: 99%

Novel Strategy for the Synthesis of Polymer/Pigment Hybrid Latex via Sulfur-Free RAFT-Mediated Emulsion Polymerization

Fen-ping

Lin

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Reversible addition–fragmentation chain transfer (RAFT) emulsion polymerization is a powerful tool for polymer encapsulation of pigment nanohybrids. Conventional RAFT emulsion polymers, however, contain sulfur residues that contribute to undesired odor and deleterious effects on final materials. Our strategy relies on an amphiphilic macromonomer poly(methacrylic acid-co-methyl methacrylate) P(MAA-co-MMA) with an ω-unsaturated end group synthesized in situ via cobalt(II)-mediated catalytic chain transfer polymerization (CCTP) at the surface of C.I. Pigment Blue 15:3 (PB) particles. Subsequently, these macromonomers are used as the living points to mediate the in situ sulfur-free RAFT (SF-RAFT) emulsion polymerization of monomers (butyl methacrylate (BMA) and butyl acrylate (BA)). It was found that a well-controlled polymerization process was achieved by semibatch SF-RAFT emulsion polymerization on the PB surface, as evidenced by the smooth increase in the molecular weight of polymer chains as the polymerization progressed and by transmission electron microscopy (TEM) results. Due to the sealing effect, these polymer/PB hybrid particles exhibited excellent colloidal stability in the aqueous phase. More importantly, film-forming hybrid particles with a soft P(BMA-co-BA) shell were successfully prepared in this work, which suggested that SF-RAFT-mediated polymerization may offer a useful alternative approach to traditional RAFT emulsion polymers for the preparation of organic/inorganic nanohybrids.

show abstract

“…17 Gd 2 O 3 , which may be used as a Faraday electrode material, has good electrochemical performance, redox activity, stability, catalytic activity, and high temperature resistance among rare earth metal oxides. [18][19][20] Gd 3+ ion, in contrast to other rare earth ions, has 7 f-electrons and is half-filled. The half-filled electron configuration is known to be more stable.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a composite material of Gd₂O₃, Co₃O₄ and graphene on nickel foam for high-stability supercapacitors

Wang

Lü

et al. 2022

New J. Chem.

View full text Add to dashboard Cite

show abstract

Adsorption study of a macro-RAFT agent onto SiO 2 -coated Gd 2 O 3 :Eu 3+ nanorods: Requirements and limitations

Cited by 12 publications

References 59 publications

Polymer@gold Nanoparticles Prepared via RAFT Polymerization for Opto-Biodetection

Polymer@gold Nanoparticles Prepared via RAFT Polymerization for Opto-Biodetection

Novel Strategy for the Synthesis of Polymer/Pigment Hybrid Latex via Sulfur-Free RAFT-Mediated Emulsion Polymerization

Fabrication of a composite material of Gd₂O₃, Co₃O₄ and graphene on nickel foam for high-stability supercapacitors

Contact Info

Product

Resources

About

Adsorption study of a macro-RAFT agent onto SiO 2 -coated Gd 2 O 3 :Eu 3+ nanorods: Requirements and limitations

Cited by 12 publications

References 59 publications

Polymer@gold Nanoparticles Prepared via RAFT Polymerization for Opto-Biodetection

Polymer@gold Nanoparticles Prepared via RAFT Polymerization for Opto-Biodetection

Novel Strategy for the Synthesis of Polymer/Pigment Hybrid Latex via Sulfur-Free RAFT-Mediated Emulsion Polymerization

Fabrication of a composite material of Gd2O3, Co3O4 and graphene on nickel foam for high-stability supercapacitors

Contact Info

Product

Resources

About

Fabrication of a composite material of Gd₂O₃, Co₃O₄ and graphene on nickel foam for high-stability supercapacitors