6533b7d4fe1ef96bd1262999
RESEARCH PRODUCT
Photodynamics of a Molecular Water-Soluble Nanocluster Identified as Au130(pMBA)50
Hannu HäkkinenJaakko KoivistoTiia-riikka TeroKirsi SalorinneSatu MustalahtiTanja LahtinenPasi MyllyperkiöSami MalolaMika Petterssonsubject
education.field_of_studyta114ChemistryPopulationRelaxation (NMR)Analytical chemistrySurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsGeneral EnergyChemical physicsExcited stateUltrafast laser spectroscopyCluster (physics)mid-IR transient absorption spectroscopySinglet statePhysical and Theoretical ChemistrySpectroscopyeducationta116gold nanoclustersExcitationdescription
Photodynamics of a highly monodisperse sample of a water-soluble gold nanocluster tentatively identified as Au130(pMBA)50 (pMBA = p-mercaptobenzoic acid) was studied by mid-IR transient absorption spectroscopy with visible excitation. The observed long-lived excited states (>1 ns) indicate a molecular behavior of the cluster. By combining the transient absorption data with DFT calculation results the observed relaxation dynamics could be fully explained by identifying several relaxation processes involving singlet and triplet manifolds. The results indicate that the cluster may have interesting transient magnetic properties due to a long-lived triplet population.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-08-17 | Journal of Physical Chemistry C |