D-π-A CHROMOPHORES BASED ON NOVEL MACROACCEPTORS - FUSED (AZINYLMETHYLENE)MALONONITRILES: LINEAR AND NONLINEAR OPTICAL PROPERTIES IN SOLUTION AND IN POLED POLYMER FILMS
2024; Elsevier BV; Volume: 227; Linguagem: Inglês
10.1016/j.dyepig.2024.112184
ISSN1873-3743
AutoresА. А. Калинин, Alexey A. Shustikov, Liliya N. Islamova, Alina I. Levitskaya, D. N. Petrov, Guzel M. Fazleeva, Alfira A. Valieva, Anastasiya V. Sharipova, A. E. Simanchuk, Alexey B. Dobrynin, А.Т. Губайдуллин, A. G. Shmelev, Olga B. Babaeva, Tatyana A. Vakhonina, Ayrat R. Khamatgalimov, Sergey L. Mikerin, Marina Yu. Balakina,
Tópico(s)Photochromic and Fluorescence Chemistry
ResumoD-π-A chromophores based on novel macroacceptors − fused azinylmethylenemalononitriles (fused azine = pyrido[2,3-b]pyrazine, quinoline, quinoxaline and quinoxalin-2-one) − have been synthesized and their linear and nonlinear optical properties in gas, solution and in poled PMMA-based films have been investigated by DFT, UV-vis and second harmonic generation technique. The transition from chromophores with an azine acceptor to ones with azinylmethylenemalononitrile acceptors leads to a 10-fold increase in calculated μβ values. Poled polymer films doped with studied chromophores at 25wt% load exhibit quadratic nonlinear optical activity with d33 values up to 42 pm/V.
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