Large Third-Order Nonlinearity of New π-conjugated Donor-Acceptor Polymers with Substituted Thiophene and 1,3,4-Oxadiazole Moieties

摘要

We present the synthesis of two newly designed, thiophene-based conjugated polymers (P1 and P2) carrying 1,3,4-oxadiazole, 3,4-dinaphthyloxy thiophene, and 3,4-dialkoxy thiophene moieties as potential NLO active materials. Their NLO properties have been investigated both by the Z-scan and degenerate four-wave mixing (DFWM) techniques using 532 nm, 7 nanosecond laser pulses. The measured β and χ(3) values for the polymers are found to be in the range of 10−11 m/W and 10−11 esu, respectively. The results indicate that they exhibit good optical-limiting behavior and are promising materials for nonlinear optical applications due to effective two-photon absorption (TPA).View full textDownload full textKeywordsconjugated polymer, electrochemical properties, optical materials, oxadiazole, thiophene-based polymerRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/00914037.2011.593062