Journal of Photoscience

한국광과학회 (Korean Society of Photoscience)
권호 표지

SPECTRAL AND PROTOPHYSICAL PROPERTIES OF 1-PYRAZINYL-2-(3- QUINOLINYL)ETHYLENE

  • Bong, Pill-Hoon (Department of Chemistry and Advanced Materials, Jeonju University) ;
  • Ryoo, Jae-Hwan (Department of Chemistry and Advanced Materials, Jeonju University)
  • 발행 : 1999.12.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The spectral and photophysical properties of trans-1-pyrazinyl-2-(3-quinolinyl)ethylene (trans-3- PyQE) are investigated under various conditions in order to obtain information on ground and excited states. The absorption spectrum of trans-3-PyQE changes slightly with varying degree of solvent polarity ; the. fluorescence spectrum is shifted to the red and becomes broad and structureless as the solvent polarity increases. The fluorescence quantum yield increases with increasing solvent polarity. The fluorescence intensity of trans-3-PyQE decreases as the concentration of methyl iodide increases. The fluorescence spectra of trans-3-PyQE changes markedly upon the variation of the excitation wavelength, presumably due to an equilibrium between conformers originating from the rotation of a quasi-single bond between the quinolinyl group and ethylenic carbon atom. These results indicate that the spectral and photophysical properties of trans-3-PyQE are strongly influenced by solvent, heavy atom, and an equilibrium between conformers

키워드

참고문헌

  1. Pure Appl. Chem. v.54 Photophysical and photochemical behavior of stilbene-like molecules and their aza-analogues Mazzucato, U.
  2. Chem. Phys. Lett. v.101 Trans → cis photoisomerization of the quarternary iodides of 4-cyano- and 4-nitro-4'-azastilbene in ethanol solution : singlet versus triplet mechanism Gorner, H.;Schulte-Frohlinde, D.
  3. J. Chem. Soc. Faraday Trans. v.88 Effect of the nature of the aromatic groups on the lowest excited states of trans-1,2-diarylethylenes Bartocci, G.;Mazzucato, U.;Spalletti, A.;Orlandi, G.;Poggi, G.
  4. J. Mol. Spectroscopy v.6 n → $π^*$ transitions in the azines Goodman, L.
  5. J. Chem. Phys. v.38 Spinorbit coupling and the radiationless processes in nitrogen heterocyclics El-Sayed, M. A.
  6. Chem. Rev. v.66 Triplet state and molecular electronic processes in organic molecules Lower, S. K.;El-Sayed, M. A.
  7. J. Am. Chem. Soc. v.108 Photochemical trans ↔ cis isomerization of 1,2-bis(heteroaryl)ethylenes : 1,2-bis(pyrazinyl)ethylene Bong, P.-H.;Kim, H. J.;Chae, K. H.;Shim, S. C.;Nakashima, N.;Yoshihara, K.
  8. J. Chem. Soc. Perkin Trans. v.2 Photochemistry of 1,2-bis(heteroaryl)ethylene : Photoisomerization of 1-pyrazinyl-2-(4-quinolinyl)ethylene Bong, P.-H.;Shim, S. C.;Shizuka, H.
  9. Org. Photochem. v.3 The cis ↔ trans photoisomerization of olefins Saltiel, J.;D'Agostino, J.;Megarity, E. D.;Metts, L.;Neuberger, K. R.;Wrighton, M.;Zafiriou, O. C.
  10. Rearrangements in Ground and Excited States v.3 cis-trans isomerization of olefins Saltiel, J.;Charlton, J. L.;P. de Mayo(ed.)
  11. J. Photochem. Photobiol., A : Chem. v.40 Photophysical behavior of trans-2-styrylquinoxaline conformers Shim, S. C.;Lee, K. T.;Bong, P.-H.
  12. J. Photochem. v.17 Emission spectroscopy evidence for the existence of rotamers in solutions of trans-diarylenes and related compounds Fischer, E.
  13. Chem. Rev. v.91 Rotational isomerism in trans-1,2-diarylethylenes Mazzucato, U.;Momicchioli, F.
  14. J. Photochem. Photobiol., A : Chem. v.53 Spectral properties of 1-pyrazinyl-2- (4-quinolinyl)ethylene Bong, P. H.;Ryoo, J. H.;Shim, S. C.
  15. J. Chem. Phys. v.65 Proximity effects in radiationless transitions with nonbonding electrons : Substituent and temperature dependences of luminescence in some N-heterocycles Madej, S. L.;Okajima, S.;Lim, E. C.
  16. J. Chem. Phys. v.69 Radiationless transitions in gaseous nitrogen heterocyclics : Energy dependence of internal conversion in quinoline and isoquinoline Okajima, S.;Lim, E. C.
  17. J. Phys. Chem. v.75 The measurement of photoluminescence quantum yields Demas, J. N.;Crosby, G. A.
  18. Mol. Photochem. v.1 Mechanisms of photochemical reactions in solution. LIX[1]. Photoisomerization of β-styrylnaphthalene Hammond, G. S.;Shim, S. C.;Van, S. P.
  19. J. Photochem. v.23 3-Styrylquinoline conformers : A photophysical and photochemical study Galiazzo, G.;Gennaro, G.;Bortolus, P.
  20. J. Photochem. v.35 Solvent effects on the emissive properties of trans-3-styrylquinoline in neutral and acidic solutions Gennaro, G.;Galiazzo, G.;Bortolus, P.
  21. J. Chem. Soc., Perkin Trans. v.2 Synthesis, electronic spectra, and photoisomerization of naphthylpyridylethylenes Galiazzo, G.;Bortolus, P.;Masetti, F.
  22. Bull. Soc. Chim. Fr. no.5 Conformations of heterocyclic derivatives II. Monoazastilbenes Sorriso, S.;Lumbroso, H.
  23. J. Phys. Chem. v.82 Conformational equilibria in 1,2-diarylethylene manifested in their emission spectra and lifetimes Hass, E.;Fischer, G.;Fischer, E.
  24. J. Chem. Soc. Faraday Trans. 2 v.76 Lowest excited states of aza-analogs of stilbene, INDO/S calculation Orlandi, G.;Doggi, G.;Marconi, G.
  25. J. Phys. Chem. v.84 Excited state reactivity of aza-aromatics. 9. Fluorescence and photoisomerization of planar and hindered styrylpyridines Bartocci, G.;Mazzucato, U.;Masetti, F.;Galiazzo, G.
  26. J. Phys. Chem. v.77 Excited state reactivity of azaaromatics. II. Solvent and protonation effects on photoisomerization and luminescence of styrylpyridines Bartocci, G.;Bortolus, P.;Mazzucato, U.
  27. J. Am. Chem. Soc. v.94 Photoaddition and photoreduction of aza- stilbenes. Solvent effects on the photoreactivity of aza-aromatiocs Whitten, D. G.;Lee, Y. J.
  28. J. Am. Chem. Soc. v.91 Radiationless processes in the photochemistry of stilbazoles and 1,2-bispyridylethylenes Whitten, D. G.;McCall, M. T.
  29. Bull. Kor. Chem. Soc. v.7 The trans → cis photoisomerization and fluorescence of trans-1,2-bispyrazylethylene : pH, Salt and heavy atom effects Shim, S. C.;Bong, P. H.
  30. J. Phys. Chem. v.79 Excited state reactivity of aza aromatics. IV. Fluorescence properties and acid-base equilibria of naphthylpyridylethylenes Favaro, G.;Masetti, F.;Mazzucato, U.;Bortolus, P.
  31. J. Am. Chem. Soc. v.99 Role of the charge transfer interactions in photoreactions. I. Explexes between styrylnaphthalenes and amines Aloisi, G. G.;Mazzucato, U.;Birks, J. B.;Minuti, L.
  32. J. Phys. Chem. v.81 Cis-trans photoisomerization of β-styrylnaphthalene and 3-styrylquinoline Gennaro, G.;Cauzzo, G.;Galiazzo, G.
  33. J. Lumin. v.27 Conformational equilibriums and photophysical behavior of styrylpyridines ; excitation energy effects in fluid and rigid solutions Bartocci, G.;Mazzucato, U.
  34. J. Photochem v.33 Photoisomerization and photocyclization of styrylphenanthrenes as compared with dinaphthylethylenes, yielding identical photooxidation products Laarhoven, W. H.;Cuppen, T. J. H. M.;Castel, N.;Fischer, E.