Show simple item record

dc.contributor.authorLunden, Hampus
dc.contributor.authorPitrat, Delphine
dc.contributor.authorMulatier, Jean-Christophe
dc.contributor.authorMonnereau, Cyrille
dc.contributor.authorMinda, Iulia
dc.contributor.authorLiotta, Adrien
dc.contributor.authorChábera, Pavel
dc.contributor.authorHopen, Didrik K.
dc.contributor.authorLopes, Cesar
dc.contributor.authorParola, Stephane
dc.contributor.authorPullerits, Tönu
dc.contributor.authorAndraud, Chantal
dc.contributor.authorLindgren, Mikael
dc.date.accessioned2019-11-18T09:54:59Z
dc.date.available2019-11-18T09:54:59Z
dc.date.created2019-10-23T10:21:54Z
dc.date.issued2019
dc.identifier.issn2304-6740
dc.identifier.urihttp://hdl.handle.net/11250/2628933
dc.description.abstractA common molecular design paradigm for optical power limiting (OPL) applications is to introduce heavy atoms that promote intersystem crossing and triplet excited states. In order to investigate this effect, three multi-branched fluorene molecules were prepared where the central moiety was either an organic benzene unit, para-dibromobenzene, or a platinum(II)–alkynyl unit. All three molecules showed good nanosecond OPL performance in solution. However, only the dibromobenzene and Pt–alkynyl compounds showed strong microsecond triplet excited state absorption (ESA). To investigate the photophysical cause of the OPL, especially for the fully organic molecule, photokinetic measurements including ultrafast pump–probe spectroscopy were performed. At nanosecond timescales, the ESA of the organic molecule was larger than the two with intersystem crossing (ISC) promoters, explaining its good OPL performance. This points to a design strategy where the singlet-state ESA is balanced with the ISC rate to increase OPL performance at the beginning of a nanosecond pulse.nb_NO
dc.language.isoengnb_NO
dc.publisherMDPInb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleAn Optical Power Limiting and Ultrafast Photophysics Investigation of a Series of Multi-Branched Heavy Atom Substituted Fluorene Moleculesnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.volume7nb_NO
dc.source.journalInorganicsnb_NO
dc.source.issue10nb_NO
dc.identifier.doi10.3390/inorganics7100126
dc.identifier.cristin1739762
dc.description.localcode© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).nb_NO
cristin.unitcode194,66,20,0
cristin.unitnameInstitutt for fysikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal