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A Facile Method for Controlling the Molecular Weight of Hyperbranched Light-Emitting Polymers

✍ Scribed by Qingguo He; Hongmin Huang; Fenglian Bai; Yong Cao

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
122 KB
Volume
27
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Summary: Two series of hyperbranched conjugated polymers were synthesized via an A~3~ + B~2~ type Wittig reaction. The molecular weights of the polymers were successfully tuned by simply changing the feed ratio of the monomers. Polymers with higher molecular weights presented more efficient photoluminescence, higher thermal stability and higher performance of LEDs.
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πŸ“œ SIMILAR VOLUMES

Rapid method for the determination of mo
Rapid method for the determination of molecular weight distribution in high polymers: A thermal gradient-turbidity technique
✍ Leon W. Gamble; W. Todd Wipke; Trent Lane πŸ“‚ Article πŸ“… 1965 πŸ› John Wiley and Sons 🌐 English βš– 681 KB

A rapid method for determining the molecular weight distribution of polymers has been the aim of polymer chemists for a long time. The method presented here requires less tban two hours, including dissolution of the polymer. It is an exteneion of a photoelectric turbidimetric technique presented by