CS2中对苯醌n-π*单-三态跃迁的可见吸收光谱及其共振拉曼光谱

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Abstract The visible absorption spectra of p-benzoquinone (PBQ) in CS₂ were measured, and a weak absorption band around 507 nm attributed to n-π^* singlet-triplet transition was demonstrated. Using the resonance Raman effect excited in liquid-core optical fiber which can enhance Raman intensity by 6-9 orders of magnitude, the authors obtained the 514.5 nm excited resonance Raman (RR) spectra of PBQ at 1 439 cm^-1 in the concentration range from 10^-3 to 10^-6 mol·L^-1. The new characteristic RR band is attributed to the symmetric CO stretch (ν_CO) of n-π^* singlet-triplet transition of PBQ. The resonance Raman shift is blue-shifted with decreasing concentration. The results of this paper are helpful for understanding the relationship between the electric structure and the photophysical properties of PBQ, and for obtaining more abundant structural information of molecules.

Key words：Liquid-core optical fiber;n-π^* singlet-triplet transition;Resonance Raman spectra

Received: 2004-09-08 Accepted: 2004-12-18

ZTFLH:

O657.3

Corresponding Authors: LI Zuo-wei

Cite this article:

YIN Jian-hua,LI Zuo-wei,REN Chun-nian, et al. Visible Absorption Spectra and Resonance Raman Spectra of n-π^* Singlet-Triplet Transition of p-Benzoquinone in CS₂ [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(11): 1821-1823.

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https://www.gpxygpfx.com/EN/Y2005/V25/I11/1821

[1] Puranik M, Chandrasekhar J, Umapathy S. Chem. Phys. Lett., 2001, 337: 224.
[2] Itoh T. Chem. Rev., 1995, 95: 2351.
[3] Beck E D. J. Phys. Chem., 1991, 95: 2818.
[4] Stammreich H, Teixeira Sans Th. J. Chem. Phys., 1965, 42: 920.
[5] Dunn T M, Francis A H. J. Mol. Spectrosc., 1974, 50: 1.
[6] (a) Rossetti R, Beck B E, Brus L E. J. Phys. Chem. A, 1983, 87: 3058.
(b) Beck S M, Brus L E. J. Am. Chem. Soc., 1982, 104: 1103.
(c) Beck S M, Brus L E. J. Am. Chem. Soc., 1982, 104: 4789.
[7] (a) Puranik M, Umapathy S. J. Chem. Phys., 2001, 115: 6106.
(b) Puranik M, Chandrasekhar J, Snijders J G, et al. J. Phys. Chem. A, 2001, 105: 10562.
(c) Balakrishnan G, Umapathy S. J. Chem. Soc. Faraday. Trans., 1997, 93: 4125.
[8] (a) Kuroe H, Seto H, Sasaki J, et al. J. Phys. Soc. Japan, 1998, 67: 2881.
(b) Luther S, Nojiri H, Motokawa M, et al. J. Phys. Soc. Japan, 1998, 67: 3715.
[9] (a) Kageyama H, Nishi M, Aso N. Phys. Rev. Lett., 2000, 84, 5876.
(b) Lememens P, Grove M, Fischer M, et al. Physica B: Condensed Matter, 2000, 281-282: 656.
[10] Walrafen G E, Stone J. Appl. Spectrosc., 1972, 26: 585.
[11] YIN Jian-hua, GAO Shu-qin, XU Xin-feng, et al(尹建华，高淑琴，徐欣锋, 等). Chem. J. of Chinese University(高等学校化学学报), 2002, 23(12): 2300.
[12] LI Zuo-wei, LI Ji-nan, GAO Shu-qin(里佐威, 李继男, 高淑琴). Jpn. J. Appl. Phys., 1998, 37(4A): 1889.
[13] Reichardt C. Solvent Effects in Organic Chemistry. New York: Weinheim, Federal Republic of Germany; Verlag Chemie, 1979. Appendixes: Table A-7.
[14] Sidman J W. J. Am. Chem. Soc., 1956, 78: 2363.
[15] Kuboyama A. Bull. Chem. Soc. Japan, 1962, 35(2): 295.
[16] Goodman J, Brus L E. J. Chem. Phys., 1978, 69(4): 1604.
[17] Kanda Y, Kaseda H, Matumura T. Spectrochim. Acta, 1964, 20: 1387.
[18] Huang R L, Goh S H, Ong S H. The Chemistry of Free Radicals. London: Edward Arnold Ltd., 1974. 79.
[19] Avouris P, Gelbart W M, EL-SAYED M A, et al. Chem. Rev., 1977, 77: 793.
[20] Brus L E, McDonald J R. J. Chem. Phys., 1973, 58: 4223.
[21] Mohandas P, Umapathy S. J. Phys. Chem. A, 1997, 101: 4449.
[22] (a) Tripathi G N R. J. Chem. Phys., 1981, 74(11): 6044.
(b) Tripathi G N R, Schuler R H. J. Phys. Chem., 1987, 91: 5881.