第 38 卷第 2 期 | | Vol. 38 No. 2 | 2008 年 4 月 | Apr 2008 |
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所属栏目:功能材料
C60-卤代苯吡咯烷的合成及光谱表征 |
霍延平1,曾和平2,张 焜1,方岩雄1,赵肃清1
(1. 广东工业大学 轻工化工学院,广东 广州 510006;2. 华南理工大学 化学科学学院,广东 广州,510641) |
摘 要:合成了一种新的C60-卤代苯吡咯烷衍生物1,以1H NMR、13C NMR 、FT-IR、 FAB-MS和UV 进行了结构表征. 测量其在甲苯溶液中的荧光发射光谱,并在此最大发射波长下测得其荧光寿命为5.26 ns,而C60在室温的荧光寿命大约是1.2 ns。说明C60-卤代苯吡咯烷(1)在激光激发下发生了加成基团苯环与母体C60之间的分子内能量转移和电荷传递,有可能产生长寿命的电荷分离态。理论计算化合物1 的电子结构和前线轨道进一步验证了上述结果。 |
关键词:C60-卤代苯吡咯烷;荧光发射光谱;荧光寿命;电荷传递 |
中图分类号:O635.1 文献标识码:A 文章编号:1009-9212(2008)02- 0051-03 |
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Synthesis and Optical Properties of Fulleropyrrolidine Containing Halogenenated Benzene Dyad |
HUO Yan-ping1,ZENG He-ping2,ZHANG Kun1,FANG Yan-xiong1,ZHAO Su-qing1
(1. Faculty of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510006,China;2. Institute of Functional Molecule ,South China University of Technology,Guangzhou 510641,China) |
Abstract:A new fulleropyrrolidine 1 containing 2-fluoro-4-Bromid-benzenee dyad was synthesized. The molecular structure was identified and characterized by 1H NMR,13C NMR,FTIR ,UV and FAB-MS. The fluoresence emission spectra and fluoresence lifetime under the largest emission wavelength were measured in toluene. It was found that the fluorescence lifetime of 1 was 5.26 ns,which was larger than the lifetime of C60(1.2 ns). This result showed that intramocular charge and energy-transfer had occurred between benzenee and C60 in the 1,and the long lived charge-separated state may occur in the 1. Electronic structure and frontier orbitals of 1 was calculated. Theoretical calculations and xperiments provided a coherent picture. |
Key words:fulleropyrrolidine;the fluoresence emission spectra;fluoresence lifetime;the charge transfer processes |
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基金项目:国家自然科学基金资助项目(20376015,20672023),广东省自然科学基金资助项目(07300884,06104656),广东省教育部产学研结合项目(2007B090400020)。
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作者简介:霍延平(1974-),男,河北张家口人,讲师,博士,主要从事有机合成及光电材料的研究。(E-mail:tigerhuo1974@yahoo.com.cn)
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收稿日期:2008-02-15
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