scholarly journals Multifunctional hyperbranched polymers for CT/19F MRI bimodal molecular imaging

2016 ◽  
Vol 7 (5) ◽  
pp. 1059-1069 ◽  
Author(s):  
Kewei Wang ◽  
Hui Peng ◽  
Kristofer J. Thurecht ◽  
Simon Puttick ◽  
Andrew K. Whittaker
Keyword(s):  
Molecular Imaging ◽  
Contrast Agents ◽  
Chain Transfer ◽  
Hyperbranched Polymers ◽  
Reversible Addition ◽  
19F Mri

Multifunctional hyperbranched polymers containing iodine and fluorine were synthesised by reversible addition–fragmentation chain transfer (RAFT) polymerisation, and evaluated as novel contrast agents for CT/19F MRI bimodal molecular imaging.

Doubly-responsive hyperbranched polymers and core-crosslinked star polymers with tunable reversibility

2015 ◽  
Vol 6 (45) ◽  
pp. 7871-7880 ◽  
Author(s):  
Sunirmal Pal ◽  
Megan R. Hill ◽  
Brent S. Sumerlin
Keyword(s):  
Chain Transfer ◽  
Raft Polymerization ◽  
Star Polymers ◽  
Hyperbranched Polymers ◽  
Reversible Addition ◽  
Redox Responsive

Thermo- and redox-responsive hyperbranched copolymers were prepared by statistical copolymerization of N-isopropylacrylamide (NIPAM) and N,N′-bis(acryloyl)cystamine (BAC) by reversible addition–fragmentation chain transfer (RAFT) polymerization.

Synthesis, Dye Encapsulation, and Highly Efficient Colouring Application of Amphiphilic Hyperbranched Polymers

2014 ◽  
Vol 67 (1) ◽  
pp. 103 ◽  
Author(s):  
Zhulin Weng ◽  
Yaochen Zheng ◽  
Aijin Tang ◽  
Chao Gao
Keyword(s):  
Quaternary Ammonium ◽  
Hyperbranched Polymer ◽  
Chain Transfer ◽  
Click Reaction ◽  
Hyperbranched Polymers ◽  
Dye Molecules ◽  
Highly Efficient ◽  
Hyperbranched Poly ◽  
Reversible Addition ◽  
Chain Transfer Polymerization

A novel kind of amphiphilic hyperbranched polymer (AHP), poly(2-(dimethylamino)ethyl methacrylate)-co-polystyrene (HPTAM-co-PS), was synthesized via the combination of reversible addition–fragmentation chain-transfer polymerization and self-condensing vinyl polymerization (RAFT-SCVP). HPTAM-co-PS was functionalized via the highly efficient Menschutkin click reaction, resulting in hyperbranched poly(propargyl quaternary ammonium methacrylate)-co-polystyrene (HPPrAM-co-PS) with a hydrophilic quaternary ammonium salt core and hydrophobic PS shell. The average numbers of dye molecules trapped by each molecule of HPPrAM-co-PS (24.2 kDa) were 24.1 for methyl orange (MO), 22.0 for fluorescein sodium (FS), 24.2 for rose bengal (RB), and 238.4 for Congo red (CR). The polymer–dye complexes show excellent colouring effects for both PS and poly(styrene-b-butadiene-b-styrene) (SBS) membranes; the colour of the membrane containing AHP is very stable and uniform. Our work opens an avenue for the design of efficient dye-colouring additives and for the application of hyperbranched polymers in the field of polymer colouring.

Tailored Design of Au Nanoparticle-siRNA Carriers Utilizing Reversible Addition−Fragmentation Chain Transfer Polymers∥

2010 ◽  
Vol 11 (4) ◽  
pp. 1052-1059 ◽  
Author(s):  
Stacey Kirkland-York ◽  
Yilin Zhang ◽  
Adam E. Smith ◽  
Adam W. York ◽  
Faqing Huang ◽  
...  
Keyword(s):  
Chain Transfer ◽  
Au Nanoparticle ◽  
Reversible Addition ◽  
Tailored Design

Self-Healing Hydrophobic POSS-functionalized Fluorinated Copolymer via RAFT Polymerization and dynamic Diels-Alder Reaction

2021 ◽  
Author(s):  
Siva Ponnupandian ◽  
Prantik Mondal ◽  
Thomas Becker ◽  
Richard Hoogenboom ◽  
Andrew B Lowe ◽  
...  
Keyword(s):  
Chain Transfer ◽  
Raft Polymerization ◽  
Alder Reaction ◽  
Diels Alder ◽  
Self Healing ◽  
Diels Alder Reaction ◽  
Reversible Addition

This investigation reports the preparation of a tailor-made copolymer of furfuryl methacrylate (FMA) and trifluoroethyl methacrylate (TFEMA) via reversible addition-fragmentation chain transfer (RAFT) polymerization. The furfuryl groups of the copolymer...

scholarly journals Synthesis of aminated polystyrene and its self-assembly with nanoparticles at oil/water interface

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 317-327
Author(s):  
Chenliang Shi ◽  
Ling Lin ◽  
Yukun Yang ◽  
Wenjia Luo ◽  
Maoqing Deng ◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Self Assembly ◽  
Carbon Dots ◽  
Chain Transfer ◽  
Functionalized Polymers ◽  
Amino Groups ◽  
One Dimensional ◽  
Reversible Addition ◽  
Oil Water ◽  
Chain Transfer Polymerization

AbstractThe influence of density of amino groups, nanoparticles dimension and pH on the interaction between end-functionalized polymers and nanoparticles was extensively investigated in this study. PS–NH2 and H2N–PS–NH2 were prepared using reversible addition–fragmentation chain transfer polymerization and atom transfer radical polymerization. Zero-dimensional carbon dots with sulfonate groups, one-dimensional cellulose nanocrystals with sulfate groups and two-dimensional graphene with sulfonate groups in the aqueous phase were added into the toluene phase containing the aminated PS. The results indicate that aminated PS exhibited the strongest interfacial activity after compounding with sulfonated nanoparticles at a pH of 3. PS ended with two amino groups performed better in reducing the water/toluene interfacial tension than PS ended with only one amino group. The dimension of sulfonated nanoparticles also contributed significantly to the reduction in the water/toluene interfacial tension. The minimal interfacial tension was 4.49 mN/m after compounding PS–NH2 with sulfonated zero-dimensional carbon dots.

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