裴坚
从事具有光电性能的新型有机化合物的合成及应用研究。
个性化签名
- 姓名:裴坚
- 目前身份:
- 担任导师情况:
- 学位:
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学术头衔:
博士生导师, 国家杰出青年科学基金获得者
- 职称:-
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学科领域:
有机化学
- 研究兴趣:从事具有光电性能的新型有机化合物的合成及应用研究。
裴坚教授于1985年至1995年就读于北大化学系,1995年7月获得博士学位。同年赴新加坡国立大学(National University of Singapore) 化学系从事博士后研究工作。两年后,转入新加坡材料研究与工程研究院 (Institute of Material Research and Engineering)从事新型有机光电材料的合成及应用研究。研究内容主要包括共轭有机小分子与高分子化合物。1998年6月,加入美国加利福尼亚州立大学圣塔巴巴拉分校 (University of California at Santa Barbara)的有机固体和高分子研究所,在2000年诺贝尔化学奖获得者Alan J.Heeger 教授的指导下进行研究工作。Heeger 教授所领导的有机固体及高分子研究所是世界上最好的研究有机及高分子光电材料的实验室之一。裴坚教授于1999年3月获得新加坡陈嘉庚青年科学家奖银奖(当年没有金奖)。2000年1月,裴坚教授回到新加坡材料研究与工程研究院继续从事新材料合成方面的工作。2001年,裴坚教授作为学术带头人回北京大学化学与分子工程学院工作, 担任副教授,筹建有机固体和高分子研究室,独立开展工作, 继续从事具有光电性能的新型有机化合物的合成及应用研究。2004年,获得国家自然科学基金委的杰出青年基金。2005年被评为教授,博士生导师。
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20
【期刊论文】A Novel Improved Procedure for the Synthesis of Oxazoles
裴坚, Wei Huang, a, b, *, Jian Pei, Bingzi Chen, Weiwei Pei*, and Xiulin Yea
Received in China 21 March 1996; revised 23 April 1996; accepted 24 May 1996, 10131-10136,-0001,():
-1年11月30日
In the present work a novel improved and convenient procedure for the synthesis of oxazoles has been developed. Acetamide, instead of ammonium acetate, was used to react with phenacyl benzoates in boiling xylene in the presence of BF3/Et2O as the catalyst. According to this new synthetic route, nine oxazole compounds were readily prepared as single products in reasonably high yields. On the basis of the experimental results, a plausible mechanism of this reaction is proposed. Copyright
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裴坚, Wei Huang, *, Hong Meng, Wang-Lin Yu, Jian Pei, Zhi-Kuan Chen, and Yee-Hing Lai†
Macromolecules 1999, 32, 118-126,-0001,():
-1年11月30日
A new series of p-n diblock conjugated copolymers consisting of alternate 1,4-bis- (oxadiazolyl)-2,5-dialkyloxybenzene and oligothiophenes with one to three thiophene rings (P1-P3) have been synthesized. The polymers have well-defined structures and exhibit good thermal stability with the onset decomposition temperatures in nitrogen at around 300℃. The glass transition temperature (Tg) of the polymers decreases with increasing the length of oligothiophene blocks. Both the absorption spectra and photoluminescence spectra shift to longer wavelength with increase in the length of oligothiophene blocks. The emissive color of the polymers could be tuned from blue to green to orange just by increasing the number of thiophene rings in the oilgothiophene blocks from one to three. No obvious change in reduction potential is found for the polymers with variation in the length of oligothiophene blocks. The reduction potential E1/2 of the polymers is measured by cyclic voltammetry to be around -1.7V vs SCE, comparable to those of poly(cyanoterephthalyidene) (CN-PPV) and other good electron-transporting materials. The oxidation potential of the polymers can be reduced remarkably by increasing the length of oligothiophene blocks. The oxidation potential E1/2 of P3 is measured to be 1.25V with the onset potential at 1.0V vs SCE. These values are comparable to those of some hole-injection favorable electroluminescent polymers. The results prove that the p-n diblock structure may be a promising molecular design for synthetically tuning the HOMO and LUMO of conjugated polymers.
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【期刊论文】New efficient blue light emitting polymer for light emitting diodes
裴坚, Wang-Lin Yu, ab, Jian Pei, Yong Cao, bc, Wei Huang*a, and Alan J. Heeger*bc
Chem. Commun., 1999, 1837-1838,-0001,():
-1年11月30日
The synthesis, by the Suzuki coupling reaction, of a novel soluble blue light emitting polymer, poly{(9,9-dihexyl-2,7-fluorene-alt-co-[2,5-bis(decyloxy)-1,4-phenylene]}(PDHFDDOP) is reported. PDHFDDOP exhibits photoluminescence (PL quantum efficiency of 40% in neat films) and electroluminescence (EL) with deep blue emission.
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裴坚, Wang-Lin Yua), Yong Cao, Jian Peia) and Wei Huangb), Alan J. Heegerc),
Appl. Phys. Lett., Vol. 75, No.21, 22 November 1999, 3270-3272,-0001,():
-1年11月30日
Deep blue photoluminescence and electroluminescence are demonstrated from a soluble conjugated polymer, poly (9,9-dihexylfluorene-alt-co-2,5-didecyloxy-para-phenylene). The PL quantum efficiency is approximately 40%. Cyclic voltammetry measurements indicate that the highest occupied molecular orbital and lowest unoccupied molecular orbital energies are 5.66 and 2.62 eV below vacuum, respectively. Single-layer and multilayer light-emitting diodes emit deep blue light (peak at; 420nm).
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裴坚, J. Pei+, ++, W.-L. Yu+, W. Huang*+ and A.J. Heeger*++
Acta Polym. 1999, 50, 327-331,-0001,():
-1年11月30日
Poly[1,4-bis(4-alkyl-2-thienyl)-2,5-disubstituted phenylene]s and their monomers have been regioselectively synthesized in high yield. The head-to-head defined structures of all polymers and monomers are demonstrated by FT-IR, 1H, 13C NMR and elemental analysis. All new materials exhibit good thermally stability, optical, electrochemical properties. Their HOMO and LUMO energy levels are determined by cyclic voltammetry and UV-vis measurement. The improvement of absolute PL quantum yields of all six polymers in the solid films have been approved after the aromatic groups were introduced into the main chain of polythiophene. Three materials were chosen to be fabricated as single layer LED devices.
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【期刊论文】Studies Towards Total Synthesis of Antillatoxin: Synthesis of C1-Cll Fragment
裴坚, Teck-Peng Loh*, Guo-Qiang Cao and Jian Pei
Tetrahedron Letters 39(1998)1457-1460,-0001,():
-1年11月30日
Synthesis of the key intermediate (5) of Antillatoxin (1) is presented. The synthesis is based on the indium-rnediated allylation of 2,4,6,6-tetramethyl-2,4-heptadienal (3) and methyl (Z)-2- (bromomethyl)-2-butenoate (4) in saturated ammonium chloride catalyzed by lanthanide triflate which afforded the corresponding product 2 in good yield and high syn selectivity.
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裴坚, Teck-Peng Loh, * Guo-Qiang Cao and Jian Pei
Tetrahedron Letters 39(1998)1453-1456,-0001,():
-1年11月30日
Indium mediates the coupling of β-bromocrotylbromide with carbonyl compounds in saturated ammonium chloride in the presence of lanthanide triflate under sonication to give the corresponding compouads in good yield and moderate to high syn diastereoselectivity.
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【期刊论文】Synthesis and Characterization of a New p-n Diblock Light-Emitting Copolymer
裴坚, Wang-Lin Yu, Hong Meng, Jian Pei, Wei Huang, *, Yongfang Li, †, and Alan J. Heeger†
Macromolecules 1998, 31, 4838-4844,-0001,():
-1年11月30日
In this paper we present the synthesis and characterization of a new light-emitting copolymer constituted of regularly alternating segments of 3,3
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【期刊论文】Tuning Redox Behavior and Emissive Wavelength of Conjugated Polymers by p-n Diblock Structures
裴坚, Wang-Lin Yu, Hong Meng, Jian Pei, and Wei Huang*
J. Am. Chem. Soc. 1998, 120, 11808-11809,-0001,():
-1年11月30日
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裴坚, Wei Huang, * Wang-Lin Yu, Hong Meng, Jian Pei, and Sam Fong Yau Li
Chem. Mater. 1998, 10, 3340-3345,-0001,():
-1年11月30日
A new series of conjugated polymers constituted of 3-alkylthiophenes and 1,4-di(1,3,4-oxadiazolyl)phenylene are synthesized through precursor polymers of polyhydrazides. The solubility of the precursor polymers and the corresponding target polymers is improved by increasing the length of side chains on thiophene rings, which results in a higher degree of the conversion from the precursors to the final polymers and thus results in longer effective conjugated length in the polymers bearing longer side chains. The thermal stability and electrochemical properties of the polymers are studied. The polymers emit blue light under the irradiation of UV light in their film states. The relative fluorescence yield in solutions increases with the increase in length of side chains on thiophene rings in the polymers and reaches up to 79% for the polymer bearing octyl side chains. The possibility of polymers being used as electroluminescent material in polymer light-emitting diodes (PLEDs) is demonstrated by the successful fabrication of a single-layer device of indium tin oxide (ITO)/polymer/Ca, which emits visible blue light above 8 V of forward bias.
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