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On the Formation and Electropolymerization of a Star Copolymer With Peripheral Carbazoles
Author(s) -
Cao PengFei,
Felipe Mary Jane,
Advincula Rigoberto C.
Publication year - 2013
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201200344
Subject(s) - carbazole , copolymer , cyclic voltammetry , polymerization , polymer chemistry , fourier transform infrared spectroscopy , ring opening polymerization , materials science , chemistry , electrochemistry , chemical engineering , photochemistry , electrode , polymer , composite material , engineering
Abstract Utilizing a hyperbranched cored ring‐opening polymerization of caprolactone, carbazole peripheral groups are extended to afford electropolymerizable star‐like copolymers. Different arm lengths are obtained on the basis of different degrees of polymerization from the polyethyleneimine core. This is confirmed by NMR and Fourier transform IR (FTIR) spectroscopy, size‐exclusion chromatography (SEC), and quantitative spectral characterization. Atomic force microscopy (AFM) imaging shows two distinct particle aggregation characteristics, before and after functionalization with carbazole groups. Cyclic voltammetry verifies the electrochemical cross‐linking properties. The results indicate that the conformational freedom of the electroactive peripheral functional groups can be controlled. Moreover, an interesting “loop effect” together with solid‐state polymerization is observed.