{"id":1963,"date":"2018-01-10T18:04:43","date_gmt":"2018-01-10T15:04:43","guid":{"rendered":"http:\/\/polymerjournal.kiev.ua\/en\/?page_id=1963"},"modified":"2018-02-14T16:59:22","modified_gmt":"2018-02-14T13:59:22","slug":"2015-4-4","status":"publish","type":"page","link":"http:\/\/polymerjournal.kiev.ua\/en\/2015-4-4\/","title":{"rendered":"2015 (4) 4"},"content":{"rendered":"<p><a href=\"https:\/\/doi.org\/10.15407\/polymerj.37.04.354\">https:\/\/doi.org\/10.15407\/polymerj.37.04.354<\/a><\/p>\n<p><strong>Effects of polyurethane polymer polarity on spectral and photophysical properties of phenalenone dyes. Dipole moment estimations for the ground and excited states<\/strong><\/p>\n<p><strong><em>\u00a0<\/em><\/strong><\/p>\n<p><strong><em>L.F. Kosyanchuk<\/em><\/strong><strong><em>2<\/em><\/strong><strong><em>, M.S. Stratilat<\/em><\/strong><strong><em>2<\/em><\/strong><strong><em>, N.V. Kozak<\/em><\/strong><strong><em>2<\/em><\/strong><strong><em>, T.V. Bezrodna<\/em><\/strong><strong><em>1<\/em><\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>1Institute of Physics NAS of Ukraine<\/p>\n<p>46, Nauki prospeckt, Kyiv, 03680, Ukraine<\/p>\n<p>2Institute of Macromolecular Chemistry NAS of Ukraine<\/p>\n<p>48, Kharkivske shose, Kyiv, 02160, Ukraine<\/p>\n<p>&nbsp;<\/p>\n<p>Polym. J., 2015, <strong>37<\/strong>, no. 4: 354-361.<\/p>\n<p>&nbsp;<\/p>\n<p>Section: Structure and properties.<\/p>\n<p>&nbsp;<\/p>\n<p>Language: Russian.<\/p>\n<p>&nbsp;<\/p>\n<p>Abstract:<\/p>\n<p><em>Effects of polyurethane matrix polarity on the spectral and photophysical properties of three widely used laser phenalenone dyes were investigated. To estimate the dipole moments in the ground and excited states in a system of singlet levels, Bakshiev\u2019s method and Kawski \u2013 Chamma \u2013 Viallet\u2019s equations were applied. The dipole moments for phenalenone dyes were found to be higher in the excited state, than in the ground one. The increase of Stokes bathochromic shift with growth of polyurethane matrix polarity indicated significant redistribution of <\/em><em>p<\/em><em>-electron density in the excited state. Dielectric permeability, being a physical characteristic feature of the polymer matrix, was shown to play a crucial role in the growth of dye photostability.<\/em><\/p>\n<p><strong>\u00a0<\/strong><\/p>\n<p><strong>Keywords:<\/strong> photophysical properties, phenalenone dyes, the dipole moments, Stokes bathochromic shift.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u041b\u0438\u0442\u0435\u0440\u0430\u0442\u0443\u0440\u0430<\/strong><\/p>\n<p>1. Rahn M.D. and King T.A. \/\/Appl. Opt. \u2013 1995. \u2013 34, \u2116 36. \u2013 \u0420. 8260\u20138271.<br \/>\n2. Ishchenko A. \/\/ Polym. Adv. 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Recording Mater. \u2013 1994. \u2013 21, \u2116 4. \u2013 P. 655-659.<br \/>\n23. \u041a\u0443\u0437\u043d\u0435\u0446\u043e\u0432\u0430 \u041d.\u0410., \u041a\u0430\u043b\u0438\u044f \u041e.\u041b., \u0418\u043e\u0444\u0444\u0435 \u041d.\u0422., \u0421\u043e\u043b\u043e- \u0434\u0430\u0440\u044c \u0421.\u041b. \/\/ \u0416\u0443\u0440\u043d. \u043e\u0431\u0449\u0435\u0439 \u0445\u0438\u043c\u0438\u0438. \u2013 1984. \u2013 55, \u2116 2. \u2013 C. 389-391.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/doi.org\/10.15407\/polymerj.37.04.354 Effects of polyurethane polymer polarity on spectral and photophysical properties of phenalenone dyes. Dipole moment estimations for the ground and excited states \u00a0 L.F. Kosyanchuk2, M.S. Stratilat2, N.V. Kozak2, T.V. Bezrodna1 &nbsp; 1Institute of Physics NAS of Ukraine 46, Nauki prospeckt, Kyiv, 03680, Ukraine 2Institute of Macromolecular Chemistry NAS of Ukraine 48, Kharkivske shose, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"acf":[],"_links":{"self":[{"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/pages\/1963"}],"collection":[{"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/comments?post=1963"}],"version-history":[{"count":2,"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/pages\/1963\/revisions"}],"predecessor-version":[{"id":2189,"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/pages\/1963\/revisions\/2189"}],"wp:attachment":[{"href":"http:\/\/polymerjournal.kiev.ua\/en\/wp-json\/wp\/v2\/media?parent=1963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}