A FULL CHARGE SEPARATION OVER THE TWO SAME CHROMOPHORES IN A PHOTOSYNTHETIC TETRAD

  • Published : 1997.09.01

Abstract

The synthesis and excited-state dynamics are described for a tetrad (ZC - ZP - ZP - I) consisting of zinc chlorin (ZC), zinc porphyrin (ZP), zinc porphyrin (ZP), and pyromellitimide (I), which upon photoexcitation provides a fully charge-separated state (ZC$^+$- P - ZP - l$^- $) with lifetimes of 230 $\mu$s in THF and > 50$ \mu$s in DMF at room temperature via a stepwise electron-transfer relay that has been detected by the ps-time resolved transient absorption spectroscopy.

Keywords

References

  1. Acc. Chem. Res. v.29 Photosynthetic light­harvesting pigment-protein complexes: toward understanding how and why Pullerits, T.;V. Sundstrom
  2. J. Am. Chem. Soc. v.115 Building-block synthesis of porphyrin light-harvesting arrays Prathapan, S.;T. E. Johnson;J. S. Lindsey
  3. J. Chem. Soc., Chem. Commun. Building large porphyrin arrays: pentamers and nonamers Officer, D. L.;A. K. Burrell;D. C. W. Reid
  4. J. Chem. Soc. Perkin Trans. v.2 Synthesis of 1,4-phenylene-bridged linear porphyrin arrays Osuka, A.;N. Tanabe;S. Nakajima;K. Maruyama
  5. J. Am. Chem. Soc. v.118 Theoretical Studies of GG-specific photocleavage of DNA via electron transfer: significant lowering of ionization potential and 5-localization of HOMO of stacked GG bases in B-form DNA Sugiyama, H.;I. Saito
  6. Nature v.382 Oxidative DNA damage through long-range electron transfer Hall, D. B.;R. E. Holmlin;J. K. Barton
  7. J. Phys. Chem. v.99 Formation of extremely long-lived charge-separated state follwing photoinduced electron transfer in poly(N-vinylcarbazole) coadsorbed with 1,2,4,5-tetracyanobenzene on a macroreticular resin Kotani, S.;H. Miyasaka;A. Itaya
  8. Science v.248 Efficient multistep photoinduced electron transfer in a molecular pentad Gust, D.;T. A. Moore;A. L. Moore;S.-L. Lee;E. Bittersmann, D. K. Luttrull;A. A. Rehms;J. M. Degraziano;X. C. Ma;F. Gao;R. E. Belford;T. T. Trier
  9. Chem. Rev. v.92 Photoinduced electron transfer in supramolecular systems for artificial photosynthesis Wasielewski, M. R.
  10. J. Am. Chem. Soc. v.118 A stepwise electron-transfer relay mimicking the primary charge separation in bacterial photosynthetic reaction center Osuka, A.;S. Marumo;N. Mataga;S. Taniguchi;T. Okada;I. Yamazaki;Y. Nishimura;T. Ohno;K. Nozaki
  11. J. Am. Chem. Soc. v.115 1,2-Phenylene-bridged diporphyrin linked with porphyrin monomer and pyromellitimide as a model for a photosynthetic reaction center Osuka, A.;S. Nakajima;K. Maruyama;N. Mataga;T. Asahi;I. Yamazaki;Y. Nishimura;T. Ohno;K. Nozaki
  12. Rev. Sci. Instrum. v.56 Microchannel-plate photomultiplier applicability to the time-correlated photon-counting method Yamazaki, I.;N. Tamai;H. Kume;H. Tsuchiya;K. Oba
  13. J. Phys. Chem. v.95 Direct observation of electron-cation geminate pair produced by picosecond laser pulse excitation in nonpolar solvent: excitation wavelength dependence of the electron thermalization length Hirata, Y.;N. Mataga
  14. J. Phys. Chem. v.96 Intramolecular electron transfer in photoexcited Ru(Ⅱ)-Rh(Ⅲ) binuclear compounds Nozaki, K.;T. Ohno;M. Haga
  15. Angew. Chem., Int. Ed. Engl. v.35 A sequential electron-transfer relay in diporphyrin-porphyrin-pyromellitimide triads analogous to that in the photosynthetic reaction center Osuka, A.;S. Nakajima;T. Okada;S. Taniguchi;K. Nozaki;T. Ohno;I. Yamazaki;Y. Nishimura;N. Mataga
  16. J. Am. Chem. Soc. v.110 Synthesis of naphthalene-bridged porphyrin dimers and their orientation dependent excitation coupling Osuka, A.;K. Maruyama
  17. J. Am. Chem. Soc. v.117 Magnetic field effects of photogenerated ion pairs on nearby molecules: a model for the carotenoid band shift in photosynthesis Gosztola, D.;H. Yamada;M. R. Wasielewski
  18. J. Phys. Chem. v.93 Solvent polarity effects on intramolecular electron transfer. 1. Energetic aspects Heitele, H.;P. Finckh;S. Weeren;F. Pollinger;M. E. Michel-Beyerle