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Complexes trans-Pt(BODIPY)X(PEt<sub>3</sub>)<sub>2</sub> : excitation energy-dependent fluorescence and phosphorescence emissions, oxygen sensing and photocatalysis

Complexes trans-Pt(BODIPY)X(PEt3)2 : excitation energy-dependent fluorescence and phosphorescence emissions, oxygen sensing and photocatalysis

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Prüfsumme: MD5:901941c628fdaaf8de7cab2a03aee11d

IRMLER, Peter, Rainer F. WINTER, 2016. Complexes trans-Pt(BODIPY)X(PEt3)2 : excitation energy-dependent fluorescence and phosphorescence emissions, oxygen sensing and photocatalysis. In: Dalton transactions. 45(25), pp. 10420-10434. ISSN 1477-9226. eISSN 1477-9234

@article{Irmler2016-06-21Compl-34695, title={Complexes trans-Pt(BODIPY)X(PEt3)2 : excitation energy-dependent fluorescence and phosphorescence emissions, oxygen sensing and photocatalysis}, year={2016}, doi={10.1039/c6dt01623e}, number={25}, volume={45}, issn={1477-9226}, journal={Dalton transactions}, pages={10420--10434}, author={Irmler, Peter and Winter, Rainer F.} }

2016-06-21 Winter, Rainer F. 2016-07-07T12:39:19Z Complexes trans-Pt(BODIPY)X(PEt<sub>3</sub>)<sub>2</sub> : excitation energy-dependent fluorescence and phosphorescence emissions, oxygen sensing and photocatalysis Winter, Rainer F. We report on five new complexes with the general formula trans-Pt(BODIPY)X(PEt<sub>3</sub>)<sub>2</sub> (Pt-X), where the platinum(ii) ion is σ-bonded to a 4,4-difluoro-4-bora-3a,4a-diaza-s-indacen-8-yl (BODIPY) and an anionic ligand X<sup>-</sup> (X = Cl<sup>-</sup>, I<sup>-</sup>, NO<sub>2</sub><sup>-</sup>, NCS<sup>-</sup>, CH<sub>3</sub><sup>-</sup>). All five complexes were characterized by multinuclear NMR, electronic absorption and luminescence spectroscopy and by X-ray diffraction analysis. Four of these complexes show efficient intersystem crossing (ISC) from an excited singlet state to a BODIPY-centred T<sub>1</sub> state and exhibit dual fluorescence and phosphorescence emission from the BODIPY ligand. In Pt-I, the fluorescence is almost completely quenched, whereas the phosphorescence quantum yield reaches a value of 40%. The rate of ISC and the ratio of phosphorescence to fluorescence emissions depend on the excitation wavelength (i.e. on which specific transition is excited). The performance of these complexes as one-component oxygen sensors and their photocatalytic activities were tested by Stern-Volmer quenching experiments and by monitoring the oxidation of 1,5-dihydroxynaphthalene with <sup>1</sup>O<sub>2</sub> generated from the long-lived triplet state of the sensitizer by triplet-triplet annihilation with <sup>3</sup>O<sub>2</sub>. Exceptionally high <sup>1</sup>O<sub>2</sub> generation quantum yields of up to near unity were obtained. Irmler, Peter 2016-07-07T12:39:19Z eng Irmler, Peter

Dateiabrufe seit 07.07.2016 (Informationen über die Zugriffsstatistik)

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