Organic Crystalline Solids Response to Piezo/thermo Stimulus: Donor鈥揂cceptor (D鈥揂) Attached Salicylaldehyde Azine Derivatives

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• 作者：Xiaotong Chen ; Ruirui Wei ; Yu Xiang ; Zhaojuan Zhou ; Kai Li ; Panshu Song ; Aijun Tong
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：July 28, 2011
• 年：2011
• 卷：115
• 期：29
• 页码：14353-14359
• 全文大小：925K
• 年卷期：v.115,no.29(July 28, 2011)
• ISSN：1932-7455

文摘

A salicylaldehyde azine-based derivative, which exhibited switchable solid-state fluorescence in response to external thermal and mechanical grinding stimulus, was reported in this study. Diffuse reflectance solid-state spectroscopy, fluorescence spectroscopy, solid-state ¹³C and ¹H NMR spectroscopy, single crystal XRD analyses, powder X-ray diffractometry, and differential scanning calorimetry were used for investigating the changes of molecular packing modes. The multistimuli fluorescence originated from two distinctive crystalline lattices via different 蟺鈥撓€ interactions. The local dipole coupling among molecules with donor鈥損lanar鈥揳cceptor structure was evidenced to be the essential factor for the effective solid luminescence-switching properties.