NDLI: Molecular Dyads Comprising Metalloporphyrin and Alkynylplatinum(II) Polypyridine Terminal Groups for Use as a Sensitizer in Dye-Sensitized Solar Cells

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Molecular Dyads Comprising Metalloporphyrin and Alkynylplatinum(II) Polypyridine Terminal Groups for Use as a Sensitizer in Dye-Sensitized Solar Cells

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Wong, Keith Man-chung Kwok, Eric Chi-ho Chan, Mei-yee Yam, Vivian Wing-wah
Description	Author Affiliation: Kwok EC ( Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong (China), Fax: (+852) 2857-1586.)
Abstract	A new class of molecular dyads comprising metalloporphyrin-linked alkynylplatinum(II) polypyridine complexes with carboxylic acids as anchoring groups has been designed and synthesized. These complexes can sensitize nanocrystalline $TiO_{2}$ in dye-sensitized solar cell (DSSC) studies. The photophysical, electrochemical, and luminescence properties of the complexes were studied and their excited-state properties were investigated by nanosecond transient absorption spectroscopy, with the charge-separated $[Por^{.−}\{(CC)Pt(tBu_{3}tpy)\}^{.+}]$ state observed upon excitation. Excited-state redox potentials were determined; the electrochemical data supports the capability of the complexes to inject an electron into the conduction band of $TiO_{2}.$ The complexes sensitize nanocrystalline $TiO_{2}$ and exhibited photovoltaic properties, as characterized by current–voltage measurements under illumination of air mass 1.5 G sunlight $(100 mWcm^{−2}).$ A DSSC based on one of the complexes showed a short-circuit photocurrent of $10.1 mAcm^{−2},$ an open-circuit voltage of 0.64 V, and a fill factor of 0.52, giving an overall power conversion efficiency of 3.4 %.
ISSN	09476539
e-ISSN	15213765
Journal	Chemistry - A European Journal
Issue Number	11
Volume Number	20
Language	English
Publisher	Wiley-VCH;ChemPubSoc Europe
Publisher Date	2014-03-10
Publisher Place	Germany
Access Restriction	Open
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Catalysis

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Molecular Dyads Comprising Metalloporphyrin and Alkynylplatinum(II) Polypyridine Terminal Groups for Use as a Sensitizer in Dye-Sensitized Solar Cells

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Molecular Dyads Comprising Metalloporphyrin and Alkynylplatinum(II) Polypyridine Terminal Groups for Use as a Sensitizer in Dye-Sensitized Solar Cells