Light-Induced Excited Spin State Trapping and Charge Transfer in Trigonal Bipyramidal Cyanide-Bridged Complexes.
| hal.structure.identifier | Department of Chemistry | |
| dc.contributor.author | FUNCK, Kristen E. | |
| hal.structure.identifier | Department of Chemistry | |
| dc.contributor.author | PROSVIRIN, Andrey V. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MATHONIÈRE, Corine | |
| hal.structure.identifier | Centre de recherches Paul Pascal [CRPP] | |
| dc.contributor.author | CLÉRAC, Rodolphe | |
| hal.structure.identifier | Department of Chemistry | |
| dc.contributor.author | DUNBAR, Kim R. | |
| dc.date.issued | 2011 | |
| dc.identifier.issn | 0020-1669 | |
| dc.description.abstractEn | Three members of the family of trigonal bipyramidal (TBP) complexes of general formula [M(tmphen)(2)](3)[M'(CN)(6)](2) (tmphen = 3,4,7,8-tetramethyl-1,10-phenanthroline) or [M(3)M'(2)], which are known to exhibit thermally induced spin crossover and charge transfer, have been investigated for optical and photomagnetic properties. The light-induced excited spin-state trapping (LIESST) effect found in classical spin crossover compounds, such as [Fe(phen)(2)(NCS)(2)], was explored for the [Fe(3)Fe(2)] and [Fe(3)Co(2)] compounds. Similarly, inspired by the light-induced charge-transfer properties of K(0.2)Co(1.4)[Fe(CN)(6)]*6.9H(2)O and related Prussian blue materials, the possibility of photo-induced magnetic changes was investigated for the [Co(3)Fe(2)] TBP complex. Optical reflectivity and magnetic susceptibility measurements were used to evaluate the photoactivity of these compounds. A comparison of these data before and after light irradiation demonstrates that (i) the spin crossover of the Fe(II) centers in the [Fe(3)Fe(2)] and [Fe(3)Co(2)] analogues and the (ii) charge transfer events in the [Co(3)Fe(2)] complex occur with temperature and irradiation. In addition, photomagnetic behavior is exhibited by all three compounds. The photo-conversion efficiency has been estimated at 20% of photo-induced high spin Fe(II) centers in [Fe(3)Co(2)], 30% of paramagnetic Co(II)-Fe(III) pairs in [Co(3)Fe(2)], and less than 2% of photo-induced high spin Fe(II) centers in [Fe(3)Fe(2)]. | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.title.en | Light-Induced Excited Spin State Trapping and Charge Transfer in Trigonal Bipyramidal Cyanide-Bridged Complexes. | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/ic1018357 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Inorganic Chemistry | |
| bordeaux.page | 2782-2789 | |
| bordeaux.volume | 50 | |
| bordeaux.issue | 7 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00589369 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00589369v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Inorganic%20Chemistry&rft.date=2011&rft.volume=50&rft.issue=7&rft.spage=2782-2789&rft.epage=2782-2789&rft.eissn=0020-1669&rft.issn=0020-1669&rft.au=FUNCK,%20Kristen%20E.&PROSVIRIN,%20Andrey%20V.&MATHONI%C3%88RE,%20Corine&CL%C3%89RAC,%20Rodolphe&DUNBAR,%20Kim%20R.&rft.genre=article |
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