Abstract
1,2,4,5-Tetrafluorobenzene has been utilized as suitable central acceptor moiety in push–pull chromophores having D-π-A-π-D quadrupolar arrangement. Starting from commercially available 1,4-diiodotetrafluorobenzene, nine novel chromophores with systematically extended π-system were synthesized via cross-coupling reactions. Further electronic tuning has been achieved by variation of the appended donor (N,N-dimethylamino and methoxy groups). Target chromophores were further investigated by X-ray analysis, electrochemical measurements, absorption and emission spectra and theoretical calculations and structure–property relationships were elucidated. Whereas target chromophores showed weak second-order nonlinear responses with β of 0.18–6.09×10−30esu, which is primarily given by their centrosymmetric arrangement, third-order polarizabilities γ of 0.84–22.5×10−27esu notably exceeded the standard Disperse Red 1 (γ=3.47×10−27esu).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.