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Synthesis of Coronene Using Microwave Irradiation

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Chinese Chemical Letters 2003年第8期14卷 783-785页

作者： Bing YANG Ying LI ming gui xie Faculty of Chemistry Sichuan UniversityChengdu 610064

Using microwave irradiation, perylene was obtained from 3,4,9,10-perylenetetracar- boxylic dianhydride with copper powder in boiling quinoline. With the same method, 1,12- benzoperylene was synthesized from 1, 12-benzoperylene-1, 2-dicarboxylic anhydride, and coronene was prepared from coronene-1, 2- dicarboxylic anhydride with good yield. Through Dields-Alder reaction, 1, 12-benzoperylene-1, 2-dicarboxylic anhydride and coronene-1,2- dicarboxylic anhydride were also prepared using microwave irradiation.

关键词： Coronene perylene microwave synthesis.

Design and Synthesis of a Highly Stable Six-hydrogen-bonded Serfassembly Yellowish Green Electroluminescent Molecular Duplex

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Chinese Chemical Letters 2005年第9期16卷 1185-1188页

作者： Guang Dong LEI Yi YI Zhi Yun LU ming gui xie College of Chemistry Sichuan Universtiy Chengdu 610064 Department of Chemistry and Life Science Neijiang Normal College Neijiang 641112

This paper describes the design, synthesis and characterization of a hydrogen-bonded molecular duplex with 1,8-naphthalimide fluorescent pendants. The two oligoamide molecular strands, with complementary hydrogen bond sequences of DDADAA and AADADD, can form an ultra stable self-assembly duplex. Its molecular structure was confu-med by ^1H NMR and ESI-MS, and its photoluminescence properties were determined. The resulting duplex exhibited a dramatically enhanced photoluminescence （PL） quantum efficiency of 63.7% compared to the corresponding 1,8-naphthalimide segment （32.4%）, suggesting that the formation of the duplex with larger molecular weight could successfully inhibit the quenching of the fluorescent pendant. This novel duplex is a prospective candidate for new electroluminescent emitter.

关键词： Selfassembly H-bond 1 8-naphthalimide photoluminescence electroluminescence

Improved One-pot Synthesis of 4,6-Dihydroxyisophthalic Acid and 2,3-Dihydroxyterephthalic Acid

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Chinese Chemical Letters 2005年第8期16卷 1039-1042页

作者： Guang Dong LEI Li Xin LI Zhi Yun LU ming gui xie College of Chemistry Sichuan Universtiy Chengdu 610064 Department of Chemistry and Life Science Neijiang Normal College Neijiang 641112

An improved method for the large-scale preparation of 4,6-dihydroxyisophthalic acid and 2,3-dihydroxyterephthalic acid has been *** to the previous procedures,this new process-requires much lower CO2 pressure of 0.3 Mpa and shorter reaction *** providing a convenient access for large-scale *** yield is high （93% and 65%,respectively）, and the oxidation of phenol is nearly inhibited,neither decolorization nor further chromatographic purification is required.

关键词： One-pot large-scale 4,6-dihydroxyisophthalic acid 2,3-dihydroxyterephthalic acid.

Synthesis and phosphorescent properties of two novel iridium (Ⅲ) complexes bearing bulky tert-butyl substituents

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Chinese Chemical Letters 2007年第9期18卷 1119-1123页

作者： Rong Huang Xiao Qiang Wei Tai Ping Zhang Zhi Yun Lu ming gui xie College of Chemistry Sichuan UniversityChengdu 610064China School of Optic-electronic Information University of Electronic Science and Technology of ChinaChengdu 610054China

The synthesis and phosphorescence properties of two novel Ir(Ⅲ)complexes bearing tert-butyl substituents,bis(4-tert-butyl-2- phenylbenzothiozolato-N,C^(2′))iridium(Ⅲ)(acetylacetonate)[(tbt)_2Ir(acac)]and bis(4-tert-butyl-1-phenyl-1H-benzimidazolato- N,C^(2′))iridium(Ⅲ)(acetylacetonate)[(tpbi)_2Ir(acac)],are reported,their molecular structures are confirmed by^1H NMR,ESI-MS and elementary ***(PL)studies revealed that they can emit strong green and orange phosphorescence in high quantum *** to their prototypes lacking of tert-butyl substituents,the two novel iridium(Ⅲ)complexes both have shorter lifetimes and improved or nearly similar PL quantum efficiencies,implying that the exciton quenching is inhibited effectively when molecular steric hindrance *** two chelates have great potential to be used as electrophosphorescent materials.

关键词： Synthesis tert-Butyl substituent Phosphorescence Electrophosphorescence

Synthesis and characterization of novel low band-gap polymers containing squaraine units

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Chinese Chemical Letters 2007年第12期18卷 1531-1534页

作者： Er Fu Huo Jiang Yong Wu Bao Feng Song Ying Li Qing Jiang ming gui xie College of Chemistrk Sichuan University Chengdu 610064 China Beijing Research Institute of Chemical Industry SINOPEC Beijing 100013 China

Novel conjugated polymers based on squaric acid having 2,5-Bis[（E）-N-alkylpyrrol-2-ylvinyl]-3-alkylthiophene （PVTVP） unit in the main chain were successfully synthesized in good yields through polycondensation reaction. Their molecular structures were characterized by PT-IR and IH NMR. They have good solubility in common organic solvents, good thermal stability by thermal gravimetric analysis and high molecular weights. Their optical properties were investigated by UV-vis absorption spectra in CH2C12 solution, the results indicated all these compounds showed broad and strong spectral responses from 200 nm to 900 nm, suggesting their potential for application as organic plastic solar cells.

关键词： Conjugated polymers Squarain Plastic solar cells

Novel fluorene-carzazole-based conjugated copolymers containing pyrazoline and benzothiazole segments for blue light-emitting materials

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Chinese Chemical Letters 2007年第12期18卷 1496-1500页

作者： Hao Chen Xing Xu He Gang Yan Xian Rong Cai Ying Li Qing Jiang ming gui xie College of Chemistry Sichuan University Chengdu 610064 China

A series of novel fluorene-carbazole-based copolymers with pyrazoline and benzothiazole units were synthesized successfully through Suzuki coupling reactions. The molecular structures and thermal properties of these polymers were characterized by FTrIR, 1H NMR, DSC and TGA. GPC results indicated that the weight-average molecular weight （Mw） and polydispersity of these polymers were in range （12,0（0）-14,000） and （1.8-2.0）, respectively. The two resulting polymers have high photoluminescence quantum efficiency implying that they may be promising candidates for polymer light-emitting diodes （PLEDs）.

关键词： Fluorene-carbazole copolymers Pyrazoline Bezothiazole

Synthesis of Pyrazolines Used as Blue Organic Electroluminescence Materials

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Chinese Chemical Letters 1999年第8期10卷 679-682页

作者： Zhi Yun LU Wei Guo ZHU Qing JIANG ming gui xie (Department of Chemistry. Sichuan University, Chengdu 610064) Sichuan Univ Dept Chem Chengdu 610064 Peoples R China

Three kinds of pyrazolines were designed and synthesized. Their structures were elucidated by IR, (HNMR)-H-1, MS, UV and elemental analysis. Their luminescent properties were determined, which indicated that they had strong blue fluorescent properties. One of them was designed to have good film formation. All the three kinds of pyrazolines can be used as blue organic electroluminescence materials (OELMs).

关键词： synthesis pyrazolines fluorescence blue organic electroluminescence materials

SYNTHESIS OF DIAZA CROWN ETHER CHIRAL LIQUID CRYSTAL

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Chinese Chemical Letters 1992年第10期3卷 775-778页

作者： ming gui xie Jun QIN Zi Lun HU Hua ming ZHAO Department of Chemistry Sichuan UniversityChengdu 610064.

A chiral liquid crystal crown ether containing diaza-18-crown-6 was synthesized with the help of CPK atomic model and in the meantime a nonchiral liquid crystal crown ether of alike structure was also synthesized for comparison, indicating that only the former was asymmetric. The present work represents the first attempt of the investigation in chiral liquid crystal crown ether, thus providing basis for further research into problems as such.

关键词： KBr IR CDC SH ppm SYNTHESIS OF DIAZA CROWN ETHER CHIRAL LIQUID CRYSTAL

Synthesis of a Novel Blue- light- emitting Polymer Material Bearing Coumarin Pendants

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Chinese Chemical Letters 2002年第7期13卷 674-677页

作者： Zhi Yun LU Tong Suo YUAN Yan Lai CHEN Xiao Qiang WEI Wei Guo ZHU ming gui xie Department of Chemistry Sichuan UniversityChengdu 610064

A novel blue luminescent polymer bearing coumarin pendants was prepared. Its luminescent properties were determined indicating that it had strong blue fluorescent properties and good film formation ability. This nov... 详细信息

关键词： Synthesis coumarin fluorescence polymer blue organic electroluminescent material.