The Journal of Physical Chemistry A
Article
absorption cross sections and deduce the ratios of the excited-
state absorption cross sections relative to those of the ground
state. This work is currently in progress.
W.S. S.K. acknowledges financial support from ND NSF
EPSCoR Grant (EPS-0814442).
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CONCLUSION
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A series of platinum bipyridyl platinum(II) bisstilbenylacetylide
complexes with different auxiliary substituents on the
stilbenylacetylide ligands were synthesized, and the photo-
physics of these complexes were systematically characterized by
spectroscopic measurements and TD-DFT theoretical calcu-
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NPh2 substituents. The lowest-energy absorption bands of 3−5
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characters (in strong dependence of the solvent polarity).
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excited-state absorption relative to that of the ground state at
532 nm. This makes complex 6 a very promising candidate for
devices that require strong RSA.
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ASSOCIATED CONTENT
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S
* Supporting Information
The synthetic procedures and characterization data for 11, 12,
3-L, and 1−6, characterization data for 21 and 22, optimized
molecular structures for 1−6 via DFT calculations, ground-state
molecular orbitals for 1, 4, and 6, NTO plots for the lowest
excited states of 1−6 calculated in CH2Cl2, NTO plots for the
lowest excited states 1 and 4 calculated in toluene, nanosecond
TA spectra of ligands 1-L and 4-L−6-L at zero time delay,
nanosecond time-resolved TA spectra of 1−6, femtosecond
time-resolved TA spectra of 2-6, 1-L, and 2-L−6-L, and the full
ref 24. This material is available free of charge via the Internet
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Righetto, S.; Teshome, A.; Asselberghs, I.; Clays, K.; Humphrey, M. G.
Inorg. Chem. 2009, 48, 3562.
AUTHOR INFORMATION
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Corresponding Author
Notes
(24) Frisch, M. J.; et al. Gaussian 09, revision A.1; Gaussian, Inc.:
Wallingford, CT, 2009.
The authors declare no competing financial interest.
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Trans. 2009, 6719. (b) Peach, M. J. G.; Benfield, P.; Helgaker, T.;
ACKNOWLEDGMENTS
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This work is supported partially by National Science Foundation
(CAREER CHE-0449598) and partially by the Army Research
Laboratory (W911NF-06-2-0032 and W911NF-10-2-0055) to
Tozer, D. J. J. Chem. Phys. 2008, 128, 044118. (c) Vlce
̌ ́ ̌
k, A., Jr.; Zalis,
S. Coord. Chem. Rev. 2007, 251, 258.
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dx.doi.org/10.1021/jp302194r | J. Phys. Chem. A 2012, 116, 4878−4889