“Dimensional” effect due to the matrix isolation of luminescent composites of polyphenylquinolines

详细信息    查看全文

• 作者：E. L. Alexandrova ; T. N. Nekrasova ; R. Yu. Smyslov ; N. V. Matyushina…
• 刊名：Semiconductors
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：50
• 期：4
• 页码：487-493
• 全文大小：540 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Magnetism and Magnetic Materials
  Electromagnetism, Optics and Lasers
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1090-6479
• 卷排序：50

文摘

The dimensional effect previously observed in various matrices for 2,6-polyphenylquinoline containing oxygen bridge and carbazolediyl groups is confirmed for phenylamine-containing 2,6-polyphenylquinolines with carbazole- and indolocarbazolediyl moieties in a polymethyl methacrylate matrix. The effect is observed from the dependence of the luminescence parameters (intensity and peak position) on the film thickness and poly-4-phenylquinoline concentration in the matrix. It is shown that the luminescence intensity decreases as the film thickness decreases to less than 50 micrometers and at distances 〈D〉 between molecules in the composite of less than 9 nm, with the peak position shifted to shorter wavelengths. The dependence of the luminescence intensity on 〈D〉 has a clearly pronounced maximum at 6–9 nm.Original Russian Text © E.L. Alexandrova, T.N. Nekrasova, R.Yu. Smyslov, N.V. Matyushina, L.A. Myagkova, V.M. Svetlichnyi, 2016, published in Fizika i Tekhnika Poluprovodnikov, 2016, Vol. 50, No. 4, pp. 494–500.