Photoluminescence in Carborane–Stilbene Triads: A Structural, Spectroscopic, and Computational Study

Simple item page
dc.contributor.authorCabrera González, Justo Enrique
dc.contributor.authorViñas, Clara
dc.contributor.authorHaukka, Matti
dc.contributor.authorBhattacharyya, Santanu
dc.contributor.authorGierschner, Johannes
dc.contributor.authorNúñez, Rosario
dc.date.accessioned2024-02-02T09:01:50Z
dc.date.available2024-02-02T09:01:50Z
dc.date.issued2016-09-06
dc.description.abstractA set of triads in which o- and m-carborane clusters are bonded to two stilbene units through Ccluster−CH2 bonds was synthesized, and their structures were confirmed by X-ray diffraction. A study on the influence of the o- and m- isomers on the absorption and photoluminescence properties of the stilbene units in solution revealed no charge-transfer contributions in the lowest excited state, as confirmed by (TD)DFT calculations. The presence of one or two B−I groups in m-carborane derivatives does not affect the emission properties of the stilbenes in solution, probably due to the rather large distance between the iodo substituents and the fluorophore. Nevertheless, a significant redshift of the photoluminescence (PL) emission maximum in the solid state (thin films and powder samples) compared to solution was observed; this can be traced back to PL sensitization, most probably due to more densely packed stilbene moieties. Remarkably, the PL absolute quantum yields of powder samples are significantly higher than those in solution, and this was attributed to the restricted environment and the aforementioned sensitization. Thus, the bonding of the carborane clusters to two stilbene units preserves their PL behavior in solution, but produces significant changes in the solid state. Furthermore, iodinated species can be considered to be promising precursors for theranostic agents in which both imaging and therapeutic functions could possibly be combined.
dc.description.departmentDepto. de Química en Ciencias Farmacéuticas
dc.description.facultyFac. de Farmacia
dc.description.refereedTRUE
dc.description.sponsorshipGeneralitat de Cataluya
dc.description.sponsorshipCampus of InternationalExcellence (CEI)UAM+CSIC
dc.description.sponsorshipCOFUND program AMAROUT
dc.description.sponsorship“Severo Ochoa”Programfor Centers of Excellence in R&D
dc.description.sponsorshipMinisterio de Economía y Competitividad(España)
dc.description.statuspub
dc.identifier.doi10.1002/chem.201601177
dc.identifier.essn1521-3765
dc.identifier.issn0947-6539
dc.identifier.officialurl https://doi.org/10.1002/chem.201601177
dc.identifier.urihttps://hdl.handle.net/20.500.14352/98096
dc.journal.titleChemistry - a European journal
dc.language.isoeng
dc.page.initial13588
dc.publisherWiley-VCH
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CTQ2013-44670-R
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CTQ2014-58801-C2-2-P
dc.relation.projectIDinfo:eu-repo/grantAgreement/2014/SGR/149
dc.relation.projectIDinfo:eu-repo/grantAgreement/COSTCM 1302project
dc.relation.projectIDinfo:eu-repo/grantAgreement/SEV-2015-0496
dc.rights.accessRightsrestricted access
dc.subject.cdu615:54
dc.subject.cdu615.31
dc.subject.keywordAlkenes
dc.subject.keywordPhotophysic
dc.subject.keywordLuminescence
dc.subject.keywordDensityfunctionalcalculations
dc.subject.keywordCarboranes
dc.subject.ucmCiencias Biomédicas
dc.subject.ucmQuímica farmaceútica
dc.subject.unesco23 Química
dc.titlePhotoluminescence in Carborane–Stilbene Triads: A Structural, Spectroscopic, and Computational Study
dc.typejournal article
dc.type.hasVersionAM
dc.volume.number22
dspace.entity.typePublication
relation.isAuthorOfPublication5fdca92d-6eb3-4245-bdfe-1bf73af9881b
relation.isAuthorOfPublication.latestForDiscovery5fdca92d-6eb3-4245-bdfe-1bf73af9881b
Download
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
CHEMIS~1.PDF
Size:
3.12 MB
Format:
Adobe Portable Document Format
Download
Collections
Artículos