An inorganic application of transient direct current photoconductivity: Corroboration of a charge-transfer assignment for the luminescing states of Pt(dpphen)(ecda)

Inorganic Chemistry

Volumn 39, Issue 8, 2000, Pages 1814-1816

  Vanhelmont, Frederik W M ^a   Johnson, Robert C ^a   Hupp, Joseph T ^a  

^a NORTHWESTERN UNIVERSITY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

INORGANIC COMPOUND; PLATINUM;

ARTICLE; CHROMATOPHORE; ELECTRON TRANSPORT; LIGAND BINDING; LUMINESCENCE; MONITORING; PHOTOCHEMISTRY; SYNTHESIS;

EID: 0034678270     PISSN: 00201669     EISSN: None     Source Type: Journal    
DOI: 10.1021/ic9911670     Document Type: Article

References (19)

1. dpphen = 4,7-diphenyl-1,10-phenathroline; ecda = 1-(ethoxycarbonyl)-1-cyanoethylene-2,2-dithiolate.
2. Smirnov, S. N.; Braun, C. L. Rev. Sci. Instrum. 1998, 69, 2875-2887 and references therein.
3. Zuleta, J. A.; Burberry, M. S.; Eisenberg, R. Coord. Chem. Rev. 1990, 97, 47-64.
4. Smirnov, S. N.; Braun, C. L. J. Phys. Chem. 1992, 96, 9587-9591.
5. Zuleta, J. A.; Bevilacqua, J. M.; Rehm, J. M.; Eisenberg, R. Inorg. Chem. 1992, 31, 1332-1337.
6. For a general review, see: Bublitz, G. U.; Boxer, S. G. Annu. Rev. Phys. Chem. 1997, 48, 213-242.
7. For a review of applications to inorganic systems, see: Vance, F. W.; Williams, R. D.; Hupp, J. T. Int. Rev. Phys. Chem. 1998, 17, 307-329.
8. Crosby, G. A.; Kendrick, K. R. Coord. Chem. Rev. 1998, 171, 407-417.
9. Roundhill, D. M.; Gray, H. B.; Che, C. M. Acc. Chem. Res. 1989, 22, 55-61 and references therein.
10. It is known that the closely related complex Pt(dpphen)(tbcda) (tbcda = 1-(tert-butoxycarbonyl)-1-cyanoethylene-2,2-dithiolate) emits from an exciplex state at low temperatures, whereas monomer emission is observed at room temperature (See: Paw, W.; Cummings, S. D.; Mansour, M. A.; Connick, W. B.; Geiger, D. K.; Eisenberg, R. Coord. Chem. Rev. 1998, 171, 125-150).
11. The solution-phase TDCP findings do not rule out the alternative assignment in solid-state environments.
12. Cummings, S. D.; Cheng, L.-T.; Eisenberg, R. Chem. Mater. 1997, 9, 440-450.
13. 2) = 120.
14. See, for example: Shin, Y. K.; Brunschwig, B. S.; Creutz, C.; Sutin, N. J. Phys. Chem. 1996, 100, 8157-8169.
15. See also: Vance, F. W.; Karki, L.; Reigle, J. K.; Hupp, J. T.; Ratner, M. A. J. Phys. Chem. A 1998, 102, 8320-8324.
16. -1 and a concentration of 1.5 mM, self-quenching is anticipated to give an additional decrease of excited-state population of only 15% after 10 ns. However, the observed TDCP signal is at least 60% lower than expected.
17. Excessive absorption of laser light before it reaches the detection region of the cell would also cause a roll off in the signal. However, the solution with the highest concentration has an absorbance of 0.6, well below a desired optical density of 1 (see ref 2). Therefore the roll off and decrease of the TDCP signal are not attributable to an absorption "artifact".
18. A crystal structure showing the postulated antiparallel stacking for a Pt (diimine)(dithiolate) complex has been reported: Zuo J.-L.; Xiong, R.-G.; You, X.-Z.; Huang, X.-Y. Inorg. Chim. Acta 1995, 237, 177-180.
19. 3) should favor greater association of 1.