Related Experiment Video
Updated: Dec 17, 2025

Characterization of Synthetic Polymers via Matrix Assisted Laser Desorption Ionization Time of Flight MALDI-TOF Mass Spectrometry
Published on: June 10, 2018
Modulating the Properties of Azulene-containing Polymers Through Functionalization at the 2-Position of Azulene
Zhuang Mao Png1, Jianwei Xu1,2
1Institute of Materials Research and Engineering, The Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore, 138634, Singapore.
Abstract:
Poly(2-arylazulene-alt-fluorene) and poly(2-arylazulene-alt-thiophene) are synthesized via Suzuki and Stille cross-coupling polymerization, respectively, using 1,3-dibromo-2-arylazulenes as monomers, which are prepared by a novel directed C-H activation method of 2-carboxylic azulene and subsequent bromination reaction. Our study shows that functionalization at the 2-position of azulene monomers influences polymer properties. For instance, different from electron-withdrawing groups that discourage the protonation of azulene, electron-donating aryl groups, however, enhances the sensitivity of response to acid. Protonation of the polymers leads to significant shifts in absorption spectra accompanying with obvious color changes from green to brown in majority cases because of the formation of poly(azulenium cation). The electrochromic properties of polymers are examined, exhibiting that nature of aryl group at the 2-position of azulene influences the stability of their electrochromic devices.
More Related Videos
09:35Preparation of a Corannulene-functionalized Hexahelicene by CopperI-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
Published on: September 18, 2016
10:09Fabricating Reactive Surfaces with Brush-like and Crosslinked Films of Azlactone-Functionalized Block Co-Polymers
Published on: June 30, 2018
Related Concept Videos
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
Free-Radical Chain Reaction and Polymerization of Alkenes
Olefin Metathesis Polymerization: Overview
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists of a...
Ziegler–Natta Chain-Growth Polymerization: Overview
Diazonium Group Substitution: –OH and –H
Polymer Classification: Architecture