Size and shape dependent photoluminescence and excited state decay rates of diamondoids

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dc.contributor.authorRichter, Robert
dc.contributor.authorWolter, David
dc.contributor.authorZimmermann, Tobias
dc.contributor.authorLandt, Lasse
dc.contributor.authorKnecht, Andre
dc.contributor.authorHeidrich, Christoph
dc.contributor.authorMerli, Andrea
dc.contributor.authorDopfer, Otto
dc.contributor.authorReiss, Philipp
dc.contributor.authorEhresmann, Arno
dc.contributor.authorPetersen, Jens
dc.contributor.authorDahl, Jeremy E.
dc.contributor.authorCarlson, Robert M. K.
dc.contributor.authorBostedt, Christoph
dc.contributor.authorMöller, Thomas
dc.contributor.authorMitric, Roland
dc.contributor.authorRander, Torbjörn
dc.date.accessioned2016-06-23T06:47:24Z
dc.date.available2016-06-23T06:47:24Z
dc.date.issued2014
dc.descriptionDieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.de
dc.descriptionThis publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.en
dc.description.abstractWe present photoluminescence spectra and excited state decay rates of a series of diamondoids, which represent molecular structural analogues to hydrogen-passivated bulk diamond. Specific isomers of the five smallest diamondoids (adamantane–pentamantane) have been brought into the gas phase and irradiated with synchrotron radiation. All investigated compounds show intrinsic photoluminescence in the ultraviolet spectral region. The emission spectra exhibit pronounced vibrational fine structure which is analyzed using quantum chemical calculations. We show that the geometrical relaxation of the first excited state of adamantane, exhibiting Rydberg character, leads to the loss of Td symmetry. The luminescence of adamantane is attributed to a transition from the delocalized first excited state into different vibrational modes of the electronic ground state. Similar geometrical changes of the excited state structure have also been identified in the other investigated diamondoids. The excited state decay rates show a clear dependence on the size of the diamondoid, but are independent of the particle geometry, further indicating a loss of particle symmetry upon electronic excitation.en
dc.description.sponsorshipDFG, FOR 1282, Controlling the electronic structure of semiconductor nanoparticles by doping and hybrid formationen
dc.identifier.eissn1463-9076
dc.identifier.pmid24398975
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/5618
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-5247
dc.language.isoen
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftende
dc.titleSize and shape dependent photoluminescence and excited state decay rates of diamondoidsen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.doi10.1039/c3cp54570a
dcterms.bibliographicCitation.issue7
dcterms.bibliographicCitation.journaltitlePhysical chemistry, chemical physicsen
dcterms.bibliographicCitation.originalpublishernameRoyal Society of Chemistryde
dcterms.bibliographicCitation.originalpublisherplaceCambridgede
dcterms.bibliographicCitation.pageend3076
dcterms.bibliographicCitation.pagestart3070
dcterms.bibliographicCitation.volume16
tub.accessrights.dnbdomain
tub.affiliationFak. 2 Mathematik und Naturwissenschaften::Inst. Optik und Atomare Physikde
tub.affiliation.facultyFak. 2 Mathematik und Naturwissenschaftende
tub.affiliation.instituteInst. Optik und Atomare Physikde
tub.publisher.universityorinstitutionTechnische Universität Berlin

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