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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 conjugated polymers based on 3-cyclobutene-l,2-dione moiety

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Chinese Chemical Letters 2011年第11期22卷 1326-1330页

作者： Er Fu Huo Yong Zou Hui Qin Sun Yan Huang zhi yun lu Qing Jiang College of Chemistry Sichuan University Chengdu 610064 China Analytical ＆ Testing Center Sichuan University Chengdu 610064 China

Three novel conjugated polymers bearing 3,4-bis（4-hexylthiophen-2-yl）-3-cyclobutene-1,2-dione unit in their main chain have been synthesized successfully in good yields through Suzuki or Stille coupling *** molecular structures have been confirmed by FT-IR,~1H NMR and ^（13）C *** these copolymers exhibit broad and strong absorption bands in UV-vis region,and their optical band gaps are calculated to be 1.6-2.0 *** that they have good coverage with the solar *** polymers have good thermostability and solubility in common organic ***,all these objective macromolecules possess high electron affinity of～3.8 eV determined from cyclic voltammetry measurement,implying that they are potential n-type polymeric photovoltaic materials.

关键词： Conjugated polymers 3-Cyclobutene-1 2-dione High electron affinity Photovoltaic materials

Novel four-hydrogen-bond assembled oligoamide dimer with pyrazoline moieties and its photoluminescent properties

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Chinese Chemical Letters 2009年第12期20卷 1419-1422页

作者： Guang Dong Lei Ming Li De Min Qiu Hui Liu Yan Huang zhi yun lu Department of Chemistry and Life Science Neijiang Normal College Neijiang 641112 China College of Chemistry Sichnan University Chengdu 610064 China

In this paper, the synthesis and characterization of a triarylpyrazoline modified four-H-bonded molecular duplex are described. Its molecular structure has been confirmed by ^1H NMR and ESI-MS. The duplex emits strong pure blue light peaking at 448 and 452 nm under UV photoexcitation in solution and solid state, respectively, and its relative photoluminescence quantum efficiency in solution is determined as 0.778 using quinine sulfate as reference. In concentration of 〉40 mmol/L, the duplex can gelate DMSO, and the organogel formed shows good pure blue photoluminescence too. This novel duplex, for its well-defined structure and efficient photoluminescence property, is a prospective candidate for pure blue electroluminescent emitter.

关键词： Self-assembly H-bond Pyrazoline Photoluminescence Organogel

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) Department of Chemistry Sichuan University Chengdu 610064 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 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.

Red Electroluminescence and Photoluminescence from Novel Binuclear Europium Complex with Squaric Acid Ligand

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Chinese Chemical Letters 2001年第10期12卷 921-924页

作者： Wei Guo ZHU Xiao Qiang WEI Mei Xiang ZHU zhi yun lu Bo LIANG Ming Gui XIE De Qiang ZHANG Yong QIU College of Chemistry Xiangtan UniversityXiangtan411105 Department of Chemistry Sichuan UniversityChendu610064 Department of Chemistry Tsinghua University

A novel binuclear europium P-diketone complex with squaric acid ligand was synthesized for the first time. Its structure was elucidated by IR, UV, and Elemental Analysis. Red light emitting diode (LED) was fabricated by using the novel europium complex as an emitting layer, tris(8-quinolinolate) aluminum (III) (Alq(3)) as an electron-transporting layer, N, N'-diphenyl-N, N'-(3-methylphenyl)-1,1'-biphenyl-4,4'-diamine (TPD) as a hole-transporting layer. A cell structure of indium-tin-oxide/TPD/Eu-complex/Alq(3)/Mg: Ag was employed. Red electroluminescence was observed at room temperature with dc bias voltage of 2 V in this cell. 2 Red emission peaks at about 613 nm with maximum luminance of over 106 cd/m(2). Compared with the EL luminance from those europium complexes reported before, one from the Eu-complex is best in the same cells.

关键词： europium chelate squaric acid electroluminescence (EL) photoluminescence (PL)

Synthesis and Fluorescent Properties of New Binuclear Europiumβ-Diketone Chelates Eu_mY_(1-m)(TTA)_3phen as Red Electroluminescent Materials

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Chinese Chemical Letters 1999年第7期10卷 603-606页

作者： Wei Guo ZHU Xiao Qiang WEI zhi yun lu Qing JIANG Ming Gui XIE(Department of Chemistry. Sichuan University. Chengdu 610064) Department of Chemistry Sichuan University Chengdu 610064 China

A new type of binuclear europlum β-diketone chelates Eum Y1-m(TTA)3 phen (0≤m≤1) and the influence of the proportion of Y on fluorescence intensity of the Eu-complexes were studied. It was found the proportion of Y3+ could affect the fluorescence properties and the film formation seriously. only m≥0.5.Y3+ could increase the luminescent intensity and improve the film formalion. As a resull. three new binuclear europium β-diketone chelales consisted of Eu, Y1-m (TTA)3phen (m=0.9. 0.7 and 0.5) were designed and synthesized. Their structures were elucidated by IR. UV. DSC and Elementary Analysis. Their PL properties were studied. The results showed that the three binuclear europium β-diketone chelates had better PL properties and film formation than Eu(TYA)3phen. They could emit sharply red light, and fluorescenl wavelength of them was all at 613nm (half bandwidth 10nm). They can be used as red organic electroluminescent materials (OELMs) in organic electrolminescent devices (OELDS).

关键词： Europium β-diketone chelate synthesis photoluminescence fluorescence properties