Chemistry Publications

Document Type

Article

Publication Date

Summer 8-10-2017

Journal

Polymer Chemistry

Volume

8

First Page

5388

Last Page

5395

URL with Digital Object Identifier

10.1039/C7PY01120B

Abstract

Ring-opening metathesis polymerization was used to produce polymers bearing an asymmetrically substituted boron difluoride 3-cyanoformazanate complex. The polymers were found to retain many of the unique characteristics of molecular boron difluoride complexes of 3-cyanoformazanates, including intense light absorption at ca. 560 nm and reversible electrochemical reductions implicating the radical anion and dianion forms of the formazanate complexes in the repeating unit of the polymer backbone. The polymers were also found to be emissive, with emission maxima centred at ca. 665 nm. The monomer employed in this study had a fluorescence quantum yield of 30%, while homopolymers were weakly emissive and block copolymers were essentially non-emissive. The development of a monomer ‘dilution’ strategy, via random copolymerization, resulted in rejuvination of the emission at ca. 665 nm up to a maximum quantum yield of 24% when the mole fraction of the repeating units bearing boron difluoride 3-cyanoformazanate complexes (ƒBF2N) was 0.08.

Available for download on Saturday, September 01, 2018


Find in your library

Included in

Chemistry Commons

Share

COinS