Reversible covalent locking of a supramolecular hydrogel via UV-controlled anthracene dimerization

2021 ◽  
Author(s):  
Zhanyao Hou ◽  
Werner M. Nau ◽  
Richard Hoogenboom
Keyword(s):  
Ternary Complexes ◽  
Functionalized Polymers ◽  
Side Chain ◽  
Supramolecular Hydrogel ◽  
Reversible Dimerization ◽  
Reversible Covalent

The formation of supramolecular hydrogels is demonstrated based on ternary complexes between anthracene side-chain functionalized polymers and macrocyclic hosts. Photo-induced reversible dimerization enables switching between supramolecular and covalent hydrogels.

SET-RAFT Polymerization of Progargyl Methacrylate and a One-Pot/One-Step Preparation of Side-chain Functionalized Polymers via Combination of SET-RAFT and Click Chemistry

2010 ◽  
Vol 31 (15) ◽  
pp. 1354-1358 ◽  
Author(s):  
Weidong Zhang ◽  
Wei Zhang ◽  
Zhengbiao Zhang ◽  
Jian Zhu ◽  
Xiulin Zhu
Keyword(s):  
Click Chemistry ◽  
Raft Polymerization ◽  
Functionalized Polymers ◽  
Side Chain ◽  
One Pot ◽  
One Step

Facile one-pot/one-step technique for preparation of side-chain functionalized polymers: Combination of SET-RAFT polymerization of azide vinyl monomer and click chemistry

2011 ◽  
Vol 50 (6) ◽  
pp. 1120-1126 ◽  
Author(s):  
Qiong Shen ◽  
Jian Zhang ◽  
Shuangshuang Zhang ◽  
Yigang Hao ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Click Chemistry ◽  
Raft Polymerization ◽  
Vinyl Monomer ◽  
Functionalized Polymers ◽  
Side Chain ◽  
One Pot ◽  
One Step

Side chain thiol-functionalized poly(ethylene glycol) by post-polymerization modification of hydroxyl groups: synthesis, crosslinking and inkjet printing

2014 ◽  
Vol 5 (18) ◽  
pp. 5350-5359 ◽  
Author(s):  
Alexander Southan ◽  
Eva Hoch ◽  
Veronika Schönhaar ◽  
Kirsten Borchers ◽  
Christian Schuh ◽  
...  
Keyword(s):  
Cell Culture ◽  
Ethylene Glycol ◽  
Inkjet Printing ◽  
Functionalized Polymers ◽  
Side Chain ◽  
Hydroxyl Groups ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Thiol functionalized PEG-based polymers were synthesized by post polymerization reactions of hydroxyl functionalized polymers. Applications of the polymers in cell culture and inkjet printing were demonstrated.

Synthesis and characterization of innovative well-defined difluorophosphonylated-(co)polymers by RAFT polymerization

2015 ◽  
Vol 6 (25) ◽  
pp. 4597-4604 ◽  
Author(s):  
Hien The Ho ◽  
Justine Coupris ◽  
Sagrario Pascual ◽  
Laurent Fontaine ◽  
Thierry Lequeux ◽  
...  
Keyword(s):  
Raft Polymerization ◽  
Functionalized Polymers ◽  
Side Chain ◽  
Synthesis And Characterization

Well-defined polymers incorporating difluorophosphonylated moieties in the side-chain and at the chain-end were synthesized by RAFT polymerization. The dealkylation of phosphonate ester groups was achieved in order to target difluorophosphonic acid functionalized polymers.

Functionalized polymers with strong push-pull azo chromophores in side chain for optical application

2018 ◽  
Vol 85 ◽  
pp. 391-398 ◽  
Author(s):  
B. Derkowska-Zielinska ◽  
L. Skowronski ◽  
M. Sypniewska ◽  
D. Chomicki ◽  
V. Smokal ◽  
...  
Keyword(s):  
Functionalized Polymers ◽  
Side Chain

Effect of secondary relaxation transitions on photo-induced anisotropy in glassy azobenzene-functionalized polymers

2017 ◽  
Vol 5 (27) ◽  
pp. 6828-6833 ◽  
Author(s):  
Sergey S. Kharintsev ◽  
Ksenia L. Shukhina ◽  
Alexandr I. Fishman ◽  
Semion K. Saikin
Keyword(s):  
Amorphous Polymers ◽  
Relaxation Transition ◽  
Temperature Behavior ◽  
Functionalized Polymers ◽  
Side Chain ◽  
Induced Anisotropy ◽  
Secondary Relaxation ◽  
Relaxation Transitions ◽  
Β Relaxation ◽  
Infrared Dichroism

The β-relaxation transition in side-chain azobenzene-functionalized amorphous polymers can be directly found from the temperature behavior of infrared dichroism.

The Power of RAFT for Creating Polymers Having Imbedded Side-Chain Functionalities: Norbornenyl-Functionalized Polymers and their Transformations via ROMP and Thiol-ene Reactions

2009 ◽  
Vol 62 (11) ◽  
pp. 1507 ◽  
Author(s):  
Jun Ma ◽  
Chong Cheng ◽  
Karen L. Wooley
Keyword(s):  
Block Copolymer ◽  
Diblock Copolymers ◽  
Chain Transfer ◽  
Chemical Reactivity ◽  
Functional Derivative ◽  
Functionalized Polymers ◽  
Side Chain ◽  
Ene Reactions ◽  
Star Block Copolymer ◽  
Copolymer Structure

Robust, efficient and orthogonal chemistries are becoming increasingly important tools for the construction of increasingly sophisticated materials. In this article, the selectivity of reversible addition–fragmentation chain transfer (RAFT)-based radical polymerization of bifunctional monomers is exploited for the preparation of statistical and block copolymers that contain imbedded side-chain functionalities, which are then shown to exhibit two different orthogonal types of chemical reactivity to afford discrete nanoscale objects and functional derivative structures. Based on the radical reactivity ratios calculated from Alfrey–Price theory, a bifunctional monomer 4-(5′-norbornene-2′-methoxy)-2,3,5,6-tetrafluorostyrene (1) was designed and synthesized, for its highly reactive tetrafluorostyrenyl group relative to its norbornene (Nb) group. Selective RAFT copolymerization of 1 with styrene (St) afforded copolymers with over 50 mol-% structural units having a pendent norbornenyl functionality while maintaining narrow molecular weight distribution (polydispersity index (PDI) = 1.23). Diblock copolymers (PDI = 1.09–1.23) with Nb side-chain substituents regioselectively placed along one segment of the block copolymer structure were also prepared by RAFT copolymerizations of 1 with St or 2,3,4,5,6-pentafluorostyrene, using either polystyrene or poly(styrene-alt-maleic anhydride)-based macro chain-transfer agents. A well-defined star block copolymer (PDI = 1.23) having a poly(norbornene)-based core and polystyrene arms was obtained by ring-opening metathesis polymerization using the regioselective diblock copolymer PSt-b-P(1-co-St) as the multifunctional macromonomer and Grubbs’ catalyst (first generation) as the initiator. Photo-induced thiol-ene reactions of Nb-functionalized polymers with thiols were fast and efficient, yielding polymers with new side-chain structures.

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