Results 251 to 260 of about 153,986 (278)

ROMPISA: Ring-Opening Metathesis Polymerization-Induced Self-Assembly

ACS Macro Letters, 2017
Herein we report a polymerization-induced self-assembly (PISA) process with ring-opening metathesis polymerization (ROMP). We utilize a peptide-based norbornenyl monomer as a hydrophobic unit to provide a range of nanostructures at room temperature yet at high solids concentrations of 20 wt % in combination with an oligoethylene glycol based ...
Daniel B. Wright, Mollie A. Touve, Lisa Adamiak, Nathan C. Gianneschi   +3 more
openaire   +2 more sources

Ethylene‐Coordinative Chain‐Transfer Polymerization‐Induced Self‐Assembly (CCTPISA)

Chemistry – A European Journal, 2022
AbstractBlock copolymers based on ethylene (E) and butadiene (B) were prepared using the ansa‐bis(fluorenyl) complex {Me2Si(C13H8)2Nd(BH4)2Li(THF)}2 in combination with (n‐Bu)(n‐Oct)Mg (BOMAG) as a chain‐transfer agent. The diblock copolymers incorporating a soft poly(ethylene‐co‐butadiene) segment, called ethylene butadiene rubber (EBR), and a hard ...
Nicolas Baulu, Marvin Langlais, Pierre‐Yves Dugas, Julien Thuilliez, François Jean‐Baptiste‐dit‐Dominique, Muriel Lansalot, Christophe Boisson, Franck D'Agosto   +7 more
openaire   +2 more sources

Photo-PISA: Shedding Light on Polymerization-Induced Self-Assembly

ACS Macro Letters, 2015
Herein we report an aqueous photoinitiated polymerization-induced self-assembly (photo-PISA) for the preparation of a remarkably diverse set of complex polymer nanoparticle morphologies (e.g., spheres, worms, and vesicles) at room temperature. Ultrafast polymerization rates were achieved, with near quantitative monomer conversion within 15 min of ...
Jianbo, Tan, Hao, Sun, Mingguang, Yu, Brent S, Sumerlin, Li, Zhang   +4 more
openaire   +2 more sources

Vitrimer Nanocomposites from Polymerization‐Induced Self‐Assembly

Advanced Materials
Abstract Vitrimers, a class of covalent adaptable networks (CANs), promise sustainability through recyclability and reprocessability, yet suffer from creep under prolonged stress due to dynamic bond exchange. Here, a materials design strategy is reported that integrates polymerization‐induced self‐assembly (PISA ...
Thi H. Le, Kevin A. Stewart, Cabell B. Eades, Jared I. Bowman, Nathan B. Wei, Brent S. Sumerlin   +5 more
openaire   +2 more sources

Polymerization techniques in polymerization-induced self-assembly (PISA)

Polymer Chemistry, 2020
The development of controlled/“living” polymerization greatly stimulated the prosperity of the fabrication and application of block copolymer nano-objects.
Chao Liu, Chun-Yan Hong, Cai-Yuan Pan
openaire   +1 more source

Gradient Polymerization–Induced Self‐Assembly: A One‐Step Approach

Macromolecular Rapid Communications, 2019
AbstractIn this work, the authors report a novel single‐step, one‐pot process for the synthesis of self‐assembled nanoparticles using a polymerization‐induced self‐assembly (PISA) mechanism. In contrast to conventional approaches employing a pre‐formed macromolecular stabilizer, the disparate reactivities between two monomers, oligo(ethylene glycol ...
Sihao Xu, Tong Zhang, Rhiannon P. Kuchel, Jonathan Yeow, Cyrille Boyer   +4 more
openaire   +2 more sources

In Situ Cross-Linking of Vesicles in Polymerization-Induced Self-Assembly

ACS Macro Letters, 2016
In situ cross-linking of nano-objects with controllable morphologies in polymerization-induced self-assembly (PISA) has been a challenge because cross-linking lowers chain mobility and hence inhibits morphology transition. Herein, we propose a novel strategy that allows in situ cross-linking of vesicles in PISA in an aqueous dispersion polymerization ...
Qingwu, Qu, Guangyao, Liu, Xiaoqing, Lv, Baohua, Zhang, Zesheng, An   +4 more
openaire   +2 more sources

Self-assembly of nanoparticles employing polymerization-induced phase separation

Journal of Colloid and Interface Science, 2014
Nanoparticles (NPs) may be homogeneously dispersed in the precursors of a polymer (reactive solvent) by an adequate selection of their stabilizing ligands. However, the dispersion can become metastable or unstable in the course of polymerization.
Williams, Roberto Juan Jose, Hoppe, Cristina Elena, Zucchi, Ileana Alicia, Romeo, Hernan Esteban, Dell'Erba, Ignacio Esteban, Gómez, María L., Puig, Julieta, Leonardi, Agustina Belen   +7 more
openaire   +3 more sources

Polymerization‐Induced Self‐Assembly of Nonlinear Polymers

Chemistry – A European Journal
ABSTRACT Polymerization‐induced self‐assembly (PISA) has become a scalable route to block copolymer nanoparticles with tunable morphologies, but most established PISA formulations focus on linear architectures. This review surveys recent progress in extending PISA to nonlinear polymers—highlighting how polymer topology reshapes ...
Ruiming Wang, Li Zhang, Jianbo Tan
openaire   +1 more source

Divergent photoiniferter polymerization-induced self-assembly

Polymer Chemistry
Wavelength-dependent photoreactions present an opportunity to achieve chemoselectivity of functional groups that otherwise demonstrate similar reactivity under traditional thermal conditions.
Alexander J. Wong, Cabell B. Eades, Jared I. Bowman, Cullen L. G. Davidson, Brent S. Sumerlin   +4 more
openaire   +1 more source