Visible light controlled aqueous RAFT continuous flow polymerization with oxygen tolerance

2019 ◽  
Vol 10 (16) ◽  
pp. 2064-2072 ◽  
Author(s):  
Jinying Peng ◽  
Qinghua Xu ◽  
Yuanyuan Ni ◽  
Lifen Zhang ◽  
Zhenping Cheng ◽  
...  
Keyword(s):  
Visible Light ◽  
Continuous Flow ◽  
Raft Polymerization ◽  
Tubular Reactor ◽  
Green Solvent ◽  
Oxygen Tolerance ◽  
Polymerization System

A fast visible light controlled RAFT polymerization system without the prior removal of oxygen was successfully carried out in a continuous tubular reactor with water as a green solvent.

Manganese-Catalyzed Batch and Continuous Flow Cationic RAFT Polymerization Induced by Visible Light

2021 ◽  
pp. 570-575
Author(s):  
Jiajia Li ◽  
Andrew Kerr ◽  
Qiao Song ◽  
Jie Yang ◽  
Satu Häkkinen ◽  
...  
Keyword(s):  
Visible Light ◽  
Continuous Flow ◽  
Raft Polymerization

Synthesis of RAFT Block Copolymers in a Multi-Stage Continuous Flow Process Inside a Tubular Reactor

2013 ◽  
Vol 66 (2) ◽  
pp. 192 ◽  
Author(s):  
Christian H. Hornung ◽  
Xuan Nguyen ◽  
Stella Kyi ◽  
John Chiefari ◽  
Simon Saubern
Keyword(s):  
Block Copolymers ◽  
Continuous Flow ◽  
Raft Polymerization ◽  
Tubular Reactor ◽  
Organic Media ◽  
Vinyl Monomers ◽  
Flow Process ◽  
Molecular Weights ◽  
Multi Stage ◽  
Polymerization Method

This work describes a multi-stage continuous flow polymerisation process for the synthesis of block copolymers using the RAFT polymerization method. The process retains all the benefits and versatility of the RAFT method and has been adapted for a series of monomer combinations, including acrylates, acrylamides, and vinyl monomers. It resulted in polymers with molecular weights between 13500 and 34100 g mol–1, and dispersities typically between 1.21 and 1.58. Different architectures were prepared (including combinations of hydrophilic and hydrophobic blocks) which are soluble in a range of different solvents including aqueous and organic media.

Organic Photocatalyst for ppm-Level Visible-Light-Driven Reversible Addition–Fragmentation Chain-Transfer (RAFT) Polymerization with Excellent Oxygen Tolerance

2019 ◽  
Vol 52 (15) ◽  
pp. 5538-5545 ◽  
Author(s):  
Yuna Song ◽  
Youngmu Kim ◽  
Yeonjin Noh ◽  
Varun Kumar Singh ◽  
Santosh Kumar Behera ◽  
...  
Keyword(s):  
Visible Light ◽  
Chain Transfer ◽  
Raft Polymerization ◽  
Oxygen Tolerance ◽  
Reversible Addition ◽  
Visible Light Driven ◽  
Ppm Level

Visible Light-Mediated Oxidative Debenzylation

2020 ◽  
Author(s):  
Cristian Cavedon ◽  
Eric T. Sletten ◽  
Amiera Madani ◽  
Olaf Niemeyer ◽  
Peter H. Seeberger ◽  
...  
Keyword(s):  
Reaction Time ◽  
Visible Light ◽  
Functional Groups ◽  
Continuous Flow ◽  
Protecting Groups ◽  
Benzyl Ether ◽  
Complex Molecules ◽  
Protective Groups ◽  
Benzyl Ethers ◽  
Harsh Conditions

Protecting groups are key in the synthesis of complex molecules such as carbohydrates to distinguish functional groups of similar reactivity. The harsh conditions required to cleave stable benzyl ether protective groups are not compatible with many other protective and functional groups. The mild, visible light-mediated debenzylation disclosed here renders benzyl ethers orthogonal protective groups. Key to success is the use of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) as stoichiometric or catalytic photooxidant such that benzyl ethers can be cleaved in the presence of azides, alkenes, and alkynes. The reaction time for this transformation can be reduced from hours to minutes in continuous flow. <br>

scholarly journals Development of a tubular continuous flow reactor for the investigation of improved gas–solid interaction in photocatalytic CO2 reduction on TiO2

2019 ◽  
Vol 18 (2) ◽  
pp. 314-318 ◽  
Author(s):  
Martin Dilla ◽  
Ahmet E. Becerikli ◽  
Alina Jakubowski ◽  
Robert Schlögl ◽  
Simon Ristig
Keyword(s):  
Gas Phase ◽  
Continuous Flow ◽  
Flow Reactor ◽  
Tubular Reactor ◽  
Co2 Reduction ◽  
Continuous Flow Reactor ◽  
Reactor Geometry

Newly developed tubular reactor geometry allows intensive gas–solid interaction in photocatalytic gas-phase CO2 reduction.

Facile preparation of thermoresponsive fluorescent silica nanopaprticles based composites through the oxygen tolerance light-induced RAFT polymerization

2018 ◽  
Vol 259 ◽  
pp. 179-185 ◽  
Author(s):  
Junyu Chen ◽  
Meiying Liu ◽  
Hongye Huang ◽  
Fengjie Deng ◽  
Liucheng Mao ◽  
...  
Keyword(s):  
Raft Polymerization ◽  
Oxygen Tolerance ◽  
Facile Preparation

Visible light-induced RAFT polymerization of methacrylates with benzaldehyde derivatives as organophotoredox catalysts

2017 ◽  
Vol 56 (2) ◽  
pp. 229-236 ◽  
Author(s):  
Qian Yang ◽  
Xianhong Zhang ◽  
Wenchao Ma ◽  
Yuhong Ma ◽  
Dong Chen ◽  
...  
Keyword(s):  
Visible Light ◽  
Raft Polymerization ◽  
Benzaldehyde Derivatives

Organocatalytic PET-RAFT Polymerization with ppm of Organic Photocatalyst under Visible Light

2021 ◽  
Author(s):  
Qiang Ma ◽  
Xun Zhang ◽  
Yu Jiang ◽  
Junqiang Lin ◽  
Bernadette Graff ◽  
...  
Keyword(s):  
Visible Light ◽  
Radical Polymerization ◽  
Raft Polymerization ◽  
Controlled Radical Polymerization ◽  
Polymerization Process ◽  
Light Control

The development of light-mediated controlled radical polymerization has benefited from the discovery of novel photocatalysts, which could allow a precise light control over the polymerization process and the production of...

Sign in / Sign up

Export Citation Format

Share Document