|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|175227||458906||2016||10 صفحه PDF||سفارش دهید||دانلود رایگان|
• Five-membered ring-embedded unsymmetrical twistacenes were prepared.
• The formed molecules show high thermal stability and strong blue, green and yellow fluorescence.
• These molecules exhibited large third-order nonlinearity, which could be utilized in optical devices.
A novel family of unsymmetrical twistacene analogues were synthesized in a palladium-promoted cross-coupling reaction and fully characterized, where five-membered ring was embedded into the main skeleton in these molecules. The formed all-carbon compounds appreciate a series of promising photophysical properties such as good thermal stability and photostability than that of acenes consisting of all six-membered rings. All of them emitted strong solution fluorescence covered a wide range from cyan to yellow. In addition, the nonlinear optical properties were further investigated through the top-hat Z-scan technique at 515 nm, which indicates that all of them presented excellent third-order nonlinear absorption effects.
Five-membered ring-embedded unsymmetrical twistacenes were prepared that presented large third-order nonlinearity.Figure optionsDownload as PowerPoint slide
Journal: Dyes and Pigments - Volume 134, November 2016, Pages 9–18