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dc.contributor.authorSENGE, MATHIASen
dc.contributor.authorBLAU, WERNERen
dc.contributor.authorWANG, JINGen
dc.date.accessioned2013-11-04T16:48:12Z
dc.date.available2013-11-04T16:48:12Z
dc.date.issued2013en
dc.date.submitted2013en
dc.identifier.citationZawadzka, M.; Wang, J.; Blau, W. J.; Senge, M. O., Solvent effect on the nonlinear absorption of 5,10-A2B2 meso substituted porphyrins, Photochemical and Photobiological Sciences, 12, 2013, 1811 1823en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/67564
dc.descriptionPUBLISHEDen
dc.description.abstractThe effect of the solvent on the nonlinear absorptive properties of two series of 5,10-A 2 B 2 porphyrins was investigated with an open Z-scan technique in the ns time regime. The recorded responses, which varied between compounds and solvents, were fitted to a four-level model where the one-photon excited state absorption is followed by a two-photon process arising from the higher excited states. For most of the compounds the positive nonlinear absorption in toluene was stronger than that in DMF and chloroform. This was attributed to enhanced two-photon absorption in toluene. For DMF and chloroform the solvent effects were most likely to be compound specific. It was demonstrated that the high saturation intensity of two-photon absorption shifts the RSA/SA turnover into a higher fluence range, which is desirable for optical limiting applications. This saturation intensity of two-photon absorption varied between compounds and solvents. Additionally, nonlinear scattering contributed strongly to the open Z-scan responses for many compounds in chlorobenzene and chloroform ? chlorobenzene solutions. This was associated with the photodegradation of chlorobenzene.en
dc.description.sponsorshipThis work was supported by a grant from Science Foundation Ireland (SFI P.I. 09/IN.1/B2650). J.W. received financial support from the 100-Talent Program of the Chinese Academy of Sciences, the National Natural Science Foundation of China (NSFC, Grant No. 61178007), and the Science and Technology Commission of Shanghai Municipality (STCSM Nano Project, Grant No. 11nm0502400). The authors would like to thank Filip Ondrusz for consultations and Dr. Eimear Finnigan for help with the manuscript.en
dc.format.extent1811-1823en
dc.language.isoenen
dc.relation.ispartofseriesPhotochemical and Photobiological Sciencesen
dc.relation.ispartofseries12en
dc.rightsYen
dc.subject.otherChemistry
dc.titleSolvent effect on the nonlinear absorption of 5,10-A2B2 meso substituted porphyrinsen
dc.typeJournal Articleen
dc.contributor.sponsorScience Foundation Ireland (SFI)en
dc.contributor.sponsorNASAen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/sengemen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/wblauen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jjwangen
dc.identifier.rssinternalid89058en
dc.identifier.doihttp://dx.doi.org/10.1039/C3PP50156Fen
dc.rights.ecaccessrightsOpenAccess
dc.contributor.sponsorGrantNumberSFI P.I. 09/IN.1/B2650en
dc.contributor.sponsorGrantNumberNSFC, Grant No. 61178007),en
dc.subject.TCDThemeNanoscience & Materialsen


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