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[1]汪锋,李昱达,汪磊,等.新型硅杂环戊二烯化合物的合成和聚集态发光[J].武汉工程大学学报,2012,(05):5-8,15.[doi:103969/jissn16742869201205002]
　WANG Feng,LI Yu\|da,WANG Lei,et al.Synthesis and aggregation\|induced emission of 1,1\|dimethyl\|3,4\|diphenyl\|2,5\|bis(2′\|thienyl)silole[J].Journal of Wuhan Institute of Technology,2012,(05):5-8,15.[doi:103969/jissn16742869201205002]
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新型硅杂环戊二烯化合物的合成和聚集态发光(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2012年05期
页码:
5-8,15
栏目:
化学与化学工程
出版日期:
2012-05-31

文章信息/Info

Title:
Synthesis and aggregation\|induced emission of
1,1\|dimethyl\|3,4\|diphenyl\|2,5\|bis(2′\|thienyl)silole
文章编号:
16742869(2012)05000503
作者:
汪锋1; 2; 李昱达1; 汪磊1; 陈军武2
1.武汉工程大学绿色化工过程教育部重点实验室， 湖北　武汉 430074；
2.华南理工大学高分子光电材料与器件研究所特种功能材料教育部重点实验室， 广东　广州 510640
Author(s):
WANG Feng1; 2; LI Yu\|da1; WANG Lei1; CHEN Jun\|wu2
1.Key Laboratory for Green Chemical Process of Ministry of Education，Wuhan Insititute of Technology，
Wuhan 430074， China；2. Institute of Polymer Optoelectronic Materials and Devices，Key Laboratory of Specially
Functional Materials of Ministry of Education，South China University of Technology ，Guangzhou 510640，China
关键词:
硅杂环戊二烯; 荧光; 聚集诱导发光
Keywords:
silole;  photoluminescence;  aggregation\|induced emission
分类号:
O627.41
DOI:
103969/jissn16742869201205002
文献标志码:
A
摘要:
实验合成了一种新型硅杂环戊二烯化合物：1,1\|二甲基\|3,4\|二苯基\|2,5\|双(2′\|噻吩基) silole（TST），利用紫外可见分光光度法和荧光分光光度法对化合物的性能进行研究.TST小分子在稀溶液中基本没有荧光，而在聚集态下呈现非常明亮的荧光发射(聚集诱导发光).TST溶液降低至低温同样能使荧光强度增强到与聚集态相当的程度.实验现象表明:抑制silole分子内2,3,4,5官能团的旋动可有效禁止无辐射跃迁而使荧光增强.由于TST具有固态强发光的优点，可作为发光材料应用于有机电致发光器件中.
Abstract:
The incorporation of siloles in small molecules or polymers is of interest and importance in chemistry and functionalities due to its excellent electronic and optoelectronic properties. A novel compound 1,1\|dimethyl\|3,4\|diphenyl\|2,5\|bis(2′\|thienyl)silole (TST) was synthesized by palladium\|catalyzed cross\|coupling reaction. The photophysical properties of TST were characterized by ultraviolet (UV) spectra and photoluminescence (PL) spectra. Interestingly, TST was practically nonemissive in solutions, but its aggregates were highly luminescent (“aggregation\|induced emission” or AIE). When the isolated molecules in solutions were cooled to extremely low temperature, they emitted intense light comparable to that in the aggregated state. These results show that deactivation of nonradiative decay by suppression of intramolecular vibrational and torsional motions leads to the increased PL efficiency of TST. The present study suggests that TST is the potential material for fabrication in organic light\|emitting devices (OLED).

参考文献/References:

［1］Friend R H, Gymer R W, Holmes A B, et al. Electroluminescence in conjugated polymers［J］. Nature, 1999, 397: 121-128.
［2］Yamaguchi S, Tamao K.Silole\|containing sigma\| and pi\|conjugated compound［J］. J Chem Soc, Dalton Trans，1998（22）:3693-3702.
［3］Ohshita J, Nodono M, Kai H, et al.Synthesis and optical, electrochemical, and electron\|transporting properties of silicon\|bridged bithiophene［J］. Organometallics,1999, 18(8):1453-1459.
［4］Luo J D, Xie Z L, Lam J W Y, et al.Aggrengation\|induced emission of 1\|methyl\|1,2,3,4,5\|pentaphenylsilole［J］.Chem Commun,2001（18）:1740-1741.
［5］Chen J W, Law C C W, Lam J W Y, et al.Synthesis, light emission, nanoaggregation and restricted intramolecular rotation of 1,1\|substituted 2,3,4,5\|tetraphenylsiloles［J］. Chem Mater,2003, 15(7):1535-1546.
［6］Chen J W, Xu B, Yang K X, et al.Photoluminescence spectral reliance on aggregation order of 1,1\|bis(2′\|thienyl)\|2,3,4,5\|tetraphenylsilole［J］. J Phys Chem B, 2005, 109(36): 17086-17093.
［7］Wang F, Luo J, Yang K X, et al.Conjugated Fluorene and Silole Copolymers: Synthesis, Characterization, Electronic Transition, Light Emission, Photovoltaic Cell, and Field Effect Hole Mobility［J］. Macromolecules,2005, 38( 6): 2253-2260.Synthesis and aggregation\|induced emission of
1,1\|dimethyl\|3,4\|diphenyl\|2,5\|bis(2′\|thienyl)silole

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备注/Memo

备注/Memo:
文编辑:张瑞收稿日期：20120404基金项目：国家自然科学基金项目（51103111）；武汉工程大学科学研究基金项目（237124）作者简介：汪锋（1978-），男，湖北洪湖人，副教授，博士.研究方向：有机光电材料、纳米材料.
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