New cyano-substituted organic dyes containing different electrophilic groups: aggregation-induced emission and large two-photon absorption cross section
2014 (English)In: Tetrahedron, ISSN 0040-4020, E-ISSN 1464-5416, Vol. 70, no 39, 7050-7056 p.Article in journal (Refereed) Published
Three aggregation-induced emission active dyes (3a-c) were synthesized and their one- and two-photon absorption properties have been investigated. They were all found to be weakly fluorescent in THF solution, while they exhibited dramatic fluorescence enhancement in water/THF mixtures. The solid fluorescence of 3a-c was recorded and their fluorescence quantum efficiency (Phi(F)) values were determined to be 8.0%, 8.1%, and 16.4%, respectively. Moreover, the two-photon absorption (2PA) cross-sections (sigma) of 3a-c were measured and 3a showed the highest value of 702 GM. The excellent aggregation-induced emission and 2PA properties provide a promising alternative for biophotonic materials.
Place, publisher, year, edition, pages
2014. Vol. 70, no 39, 7050-7056 p.
Aggregation-induced emission, Two photon absorption, Cross section, Solid fluorescence
IdentifiersURN: urn:nbn:se:kth:diva-153845DOI: 10.1016/j.tet.2014.05.016ISI: 000341550600019ScopusID: 2-s2.0-84916614683OAI: oai:DiVA.org:kth-153845DiVA: diva2:754983
QC 201410132014-10-132014-10-092014-10-13Bibliographically approved