Optical behaviors of conjugated-chain compounds containing benzene and furan units

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• 作者：Wen-Long Pan ; Ji-Guo Song ; Yong Chen ; Yi-Qian Wan ; Hua-Can Song
• 关键词：Conjugated compound ; Trisbustituted-furan ; Synthesis ; Optical behavior
• 刊名：Spectrochimica Acta Part A ; Molecular and Biomolecular Spectroscopy
• 出版年：2007
• 期刊代码：99_13861425
• 类别：ch
• 出版时间：April 2007
• 卷：66
• 期：4-5
• 页码：1300-1306
• 文件大小：243 K

摘要

Thirteen conjugated-chain compounds which contain benzene and furan units were prepared, their optical behaviors, including UV–vis absorption coefficient (), absorption wavelengths (λ_a), fluorescence emission wavelengths (λ_e), and quantum yields (Φ) were measured. Meanwhile, their LUMO and HOMO energy were determined by cyclic voltammetry and their second-order polarizations (β_xxx) values were determined by solvatochromic method, respectively. The results showed that this kind of compounds possess a shorter λ_a (320–365 nm) and performance a higher Φ values, especially for rong>2aarong>, rong>2abrong>, rong>2acrong> and rong>2bbrong>, their Φ values are all more than 90%. These compounds, except rong>2dbrong>, showed a higher β_xxx values in DMSO, especially for rong>2dcrong> (75.77 × 10⁻³⁰ m⁵ C⁻¹) and rong>2ddrong> (83.32 × 10⁻³⁰ m⁵ C⁻¹), than that 10-methyl-acridone (6.578 × 10⁻³⁰ m⁵ C⁻¹) or 10-benzylacridone (6.845 × 10⁻³⁰ m⁵ C⁻¹) in DMSO did, and second harmonic generation value of 10-methylacridone and 10-benzylacridone in powder are, respectively, 1.381 and 1.861 times of that value of urea. The β_xxx values and Φ values determined for these compounds in this work were lower than these values which were desired in the original work, this phenomena was explained from their molecular structures. This work confirmed that as these compounds performance shorter λ_a and higher Φ values, they could be good blue-color optical materials for some fields, such as OLED materials, two-photo absorption materials, fluorescent dyes.