Fluorescence and absorption of polystyrene exposed to UV laser radiation
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We show that when polystyrene is exposed (for 15–60 sec) to a UV laser light beam (λ = 248 nm), its absorption and luminescent properties change significantly. In the irradiated polymer, optical centers are formed with absorption bands in the 280–460 nm region and fluorescence bands in the 330–520 nm region. We have established the chemical structure of the optical centers for fluorescence of polystyrene.
Key wordspolystyrene UV laser fluorescence
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- 1.N. N. Barashkov and T. V. Sakhno, Optically Transparent Polymers and Materials Based on Them [in Russian], Khimiya, Moscow (1992).Google Scholar
- 2.A. K. Pikaev, Modern Radiation Chemistry. The Solid State and Polymers [in Russian], Nauka, Moscow (1987).Google Scholar
- 3.B. M. Krasovitskii and B. M. Bolotin, Organic Luminophores [in Russian], Khimiya, Moscow (1984).Google Scholar
- 4.B. V. Grinev and V. G. Sentchishin, Plastic Scintillators [in Russian], Akta, Kharkov (2003).Google Scholar
- 5.B. Ranby and J. F. Rabek, Photodegradation, Photooxidation, and Photostabilization of Polymers [Russian translation], Mir, Moscow (1978).Google Scholar
- 6.N. Grassie and G. Scott, Polymer Degradation and Stabilization [Russian translation], Mir, Moscow (1988).Google Scholar
- 10.R. N. Nurmukhametov, A. M. Sergeev, R. R. Yunyaev, and S. N. Illarionova, Vysokomol. Soedin., Ser. A, 45, 830–838 (2004).Google Scholar
- 12.R. N. Nurmukhametov, L. V. Volkova, I. L. Belaits, A. V. Pebalk, K. A. Mailyan, and I. E. Kardash, Vysokomol. Soedin., Ser. A, 40, 1625–1628 (1998).Google Scholar
- 13.N. M. Surin, V. V. Nekrasov, and A. A. Kuznetov, Zh. Fiz. Khim., 73, 256–263 (1999).Google Scholar
- 14.D. Patra, Zh. Prikl. Spektr., 71, 307–311 (2004).Google Scholar