Photocontrolled Living Polymerization Systems with Reversible Deactivations through Electron and Energy Transfer.
Macromol Rapid Commun
; 38(13)2017 Jul.
Article
em En
| MEDLINE
| ID: mdl-28556363
ABSTRACT
Recently, visible-light-regulated polymerization has been gaining popularity, as it opens a range of new opportunities for the synthesis of functional polymers and materials. Here, the most recent developments in this field are summarized, which is the use of photocatalysts and catalyst-free approaches to mediate polymerization upon photoexcitation. These catalysts can transfer an electron or energy to activate an initiator. The recent achievements in light-regulated atom-transfer radical polymerization, reversible addition-fragmentation chain-transfer polymerization, ring-opening metathesis polymerization, cobalt-mediated radical polymerization, iodine-mediated radical polymerization, and living cationic polymerization are reviewed. Recent development in these fields have solved important challenges in polymer chemistry, such as the development of oxygen-tolerant polymerization, polymerization mediated by near-infrared, metal-free polymerization, and spatial-, temporal-, and sequence-controlled polymerization. Some applications of these techniques will be discussed, such as adapting the current photocatalytic systems to synthesize heterogeneous photocatalysts that act as recyclable photocatalysts and novel light-mediated approaches for surface functionalization of hybrid materials and living cells. Finally, the existing challenges in polymer chemistry that could be overcome by further development of light-mediated polymerization techniques are highlighted along with the future directions of this field.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Fotoquímica
/
Elétrons
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Transferência de Energia
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Polimerização
Idioma:
En
Revista:
Macromol Rapid Commun
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Austrália