Spectra of benzil

Bera, Subhas Ch ; Mukherjee, Ranajit ; Chowdhury, Mihir (1969) Spectra of benzil Journal of Chemical Physics, 51 (2). pp. 754-761. ISSN 0021-9606

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Official URL: http://jcp.aip.org/resource/1/jcpsa6/v51/i2/p754_s...

Related URL: http://dx.doi.org/10.1063/1.1672065


The polarized low-temperature absorption spectrum, emission spectrum, and excitation spectrum of benzil and benzil-doped stilbene crystals have been recorded. It has been found that the 3800Å(n-∏ ) band system of benzil is split by the weak interaction between the two halves of the molecule. The excitation spectrum reveals the presence of a S→T transition hidden underneath the S→S transition. The crystal spectrum of benzil-doped stilbene is different from the benzil spectrum. The new sharp band at 4850 Å has been interpreted in terms of a trans-planar configuration of benzil. A weak (∏ →n) fluorescence has been detected in this crystal.

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