Abstract
This communication describes the synthesis of a novel low band gap hydrocarbon polymer, poly(indenofluorene), PIF, composed of 3,9-di-tert-butylindeno[1,2-b]fluorene building blocks. The polymer, with high degrees of polymerization (DP > 20), was generated by coupling alkylated 6,6,12,12-tetrachloro-6,12-dihydroindeno[1,2-b]fluorene monomers by means of low-valent transition metal [e.g. chromium(0) and nickel(0)] compounds as dehalogenating agents. The cross-conjugated coupling product exhibits a widely red shifted longest wavelength absorption maximum (λmax of up to 799 nm). This fact can be interpreted as resulting from the contribution of quinoid states to the electronic ground state. Oligomeric products possessing similar structures were also generated by dehydrohalogenation polymerization, starting from the corresponding 6,12-dihalo-6,12-dihydroindeno[1,2-b]fluorenes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
