Please use this identifier to cite or link to this item: https://doi.org/10.1002/pola.22790
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dc.titleStilbene-containing polyactylenes: Molecular design, synthesis, and relationship between molecular structure and NLO properties
dc.contributor.authorSu, X.
dc.contributor.authorXu, H.
dc.contributor.authorGuo, Q.
dc.contributor.authorShi, G.
dc.contributor.authorYang, J.
dc.contributor.authorSong, Y.
dc.contributor.authorLiu, X.
dc.date.accessioned2014-10-16T09:42:06Z
dc.date.available2014-10-16T09:42:06Z
dc.date.issued2008-07-01
dc.identifier.citationSu, X., Xu, H., Guo, Q., Shi, G., Yang, J., Song, Y., Liu, X. (2008-07-01). Stilbene-containing polyactylenes: Molecular design, synthesis, and relationship between molecular structure and NLO properties. Journal of Polymer Science, Part A: Polymer Chemistry 46 (13) : 4529-4541. ScholarBank@NUS Repository. https://doi.org/10.1002/pola.22790
dc.identifier.issn0887624X
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/98024
dc.description.abstractPolyacetylenes (P1-P4) containing different stilbene groups, -[(CH=C) -Ph-CH=CH-Ph-R]n-(R=OCmH2m+1 (m = 4 (P1), 10 (P2), 16 (P3)), or NO2 (P4)) were designed and synthesized, respectively, using [Rh(nbd)Cl]2 as a catalyst. Their structures and properties were characterized and evaluated by FTIR, 1H-NMR, 13CNMR, GPC, and UV, PL, respectively. The optical limiting and nonlinear optical properties were investigated by using a frequency doubled, Q-switched, mode-locked Continuum ns/ps Nd:YAG laser system and their optical limiting mechanism was discussed. It is surprising to see that the stilbene pendants endow the polyacetylenes with a high thermal stability (Td ≥ 270 °C), novel optical limiting properties and large third-order nonlinear optical susceptibilities (up to 4.61 × 10-10 esu). The optical limiting mechanism is mainly originated from reverse saturable absorption of molecules. In addition, it is found that the polymer with electron accepted NO2 moiety exhibits better optical properties than that with electron donated alkoxy group because of larger n electron delocalization and dipolar effect. The strong interaction between stilbene pendants and the polyene main chain significantly results in red-shift of fluorescence emitting peak. © 2008 Wiley Periodicals, Inc.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1002/pola.22790
dc.sourceScopus
dc.subjectNLO
dc.subjectOptical limiting
dc.subjectPolyacetylenes
dc.subjectStructure-property relations
dc.subjectSynthesis
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1002/pola.22790
dc.description.sourcetitleJournal of Polymer Science, Part A: Polymer Chemistry
dc.description.volume46
dc.description.issue13
dc.description.page4529-4541
dc.description.codenJPACE
dc.identifier.isiut000257153500025
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