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Synthesis, X-ray structure and luminescent properties of Sm^(3+) ternary complex with novel heterocyclic β-diketone and 1,10-phenanthroline (Phen)

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Journal of Rare Earths 2011年第8期29卷 719-722页

作者： Ilya V. Taydakov Boris E. Zaitsev Sergey S. Krasnoselskiy Zoya A. Starikova G. S. Petrov Institute of Plastics JSC Perovskiy proezd 35 Moscow 111024 Russian Federation People's Friendship University of Russia A. N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences

A new neutral ternary samarium complex Sm（Phen）HL3 in which Phen is 1,10-phenanthroline and HL is （1,3-bis（1,3-dimethyl-1H-pyrazol-4-yl）-1,3-propanedione） was synthesized. Molecular structure of this complex was determined by X-ray diffraction. Under UV-light this complex is demonstrated bright red luminescence （λmax=647 nm）, which was corresponding to the electric dipole 4G5/2→6H9/2 transition in Sm3＋ ion. UV-absorption, excitation and emission spectra of the title compound were investigated.

关键词： samarium pyrazole β-diketone crystal structure photoluminescence rare earths

Synthesis and fluorescence properties of Eu(Ⅲ),Tb(Ⅲ) and Sm(Ⅲ) with β-diketone and 2,2′-bipyridine

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Journal of Rare Earths 2012年第6期30卷 520-523页

作者：刘兴旺蒋家栋雍胜利郭玉玮杨坤王丽 School of Chemistry Baotou Teachers'College School of Chemical Engineering Inner Mongolia University of Technology

Three new rare earth ternary complexes, RE（PPP）3bpy （RE=Sm3＋, Eu3＋, Tb3＋）, were synthesized by the reaction of 1-phenyl-3- （p-phenylethynylphenyl）-1,3-propanedione （HPPP） and 2,2＇-bipyridine（bpy） with rare earth chloride RECl13, respectively, in alcohol solution. The compositions were characterized by means of infrared （IR） spectra, chemical analysis, elemental analysis, and thermodynanaic analysis. Luminescent properties of the three complexes were studied. At room temperature, under UV light excitation, the Sm3＋, Eu3＋ and Tb3＋ complexes exhibited characteristic emission of the central ions. The fluorescence spectra showed that the fluorescence emission intensity of Eu3＋ complex was the strongest. The narrow strongest emission band of Eu3＋ complex was considered to be a valuable material with bright red fluorescence.

关键词： β-diketone 2,2'-bipyridine lanthanide complex luminescent property rare earths

Synthesis and fluorescent properties in complexes of Eu( Ⅲ), Tb( Ⅲ), and Sm( Ⅲ) with β-diketone and 2,2′-bipyridine

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Rare Metals 2012年第5期31卷 -页

作者： LIU Xingwang JIANG Jiadong GUO Yuwei YONG Shengli YANG Kun NIE Lu School of Chemistry Baotou Teachers' College Baotou 014030 China School of Chemical Engineering Inner Mongolia University of Technology Hohhot 010051 China

Three new rare earth ternary complexes, RE(PB)_3bpy (RE=Sm^(3+) , Eu^(3+) , and Tb^(3+) ), were synthesized by the reaction of 1-(p-phenylethynyl- phenyl)-1,3-butanedione (HPB) and 2,2′-bipyridine (bpy) with rare earth chloride RECl_3 , respectively, in alcohol solution. The compositions were characterized by means of infrared (IR) spectra, chemical analysis, elemental analysis, and thermodynamic analysis. Luminescent properties of the three complexes were studied. At room temperature, under UV light excitation, the Sm^(3+) , Eu^(3+) , and Tb^(3+) complexes exhibit characteristic emission of the central ions. The fluorescence spectra show that the fluorescence emission intensity of Eu^(3+) complex is the strongest. The narrow strongest emission band of Eu^(3+) complex is considered to be a valuable material with bright red fluorescence.

关键词： β-diketone 2,2′-bipyridine lanthanide complex luminescent property

SYNTHESIS AND PROPERTIES OF METAL COMPLEXES OF β-diketone BASED SIDE CHAIN LIQUID CRYSTAL POLYSILOXANE

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Chinese Journal of Polymer Science 1991年第1期9卷 71-78页

作者：吴富洲张榕本江英彦 Institute of Chemistry Academia Sinica

A new type of metal coordinated liquid crystalline polymers has been synthesized by complexation of metal ions with β-diketone based side chain liquid crystal polysiloxane (DKLCP). The complexation of copper ions with DKLCP greatly increases the phase transition temperature T_k from crystalline state to liquid crystalline state and T_(cl) from LC to isotropic state and makes the range of phase transition ΔT (ΔT=T_(cl)-T_k) widened. These complexes are soluble in common organic solvents. However, the incorporation of europium ions into DKLCP molecules gives rise to reduction in liquid crystallinity and crosslinking in some cases. The DKLCP coordinated with suitable amount of Eu ions can show good liquid crystallinity and fluorescent property.

关键词： β-diketone Metal coordinated LCP Liquid Crystalline

Synergistic extraction of zinc from ammoniacal solutions using β-diketone mixed with CYANEX923 or LIX84I

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Transactions of Nonferrous Metals Society of China 2012年第5期22卷 1217-1223页

作者：胡久刚陈启元胡慧萍尹周澜中南大学化学化工学院有色金属资源化学教育部重点实验室长沙410083

The extraction behaviors of zinc from ammoniacal solutions were investigated using β-diketone （HA） and their mixtures with CYANEX923 or LIX84I. The effects of pH, total ammonia concentration, extractant concentration, anion species and temperature on zinc extraction were examined. The synergistic mechanism was discussed with regard to the structure of extractant and the extracted zinc complexes. It is found that the increase of total ammonia concentration and pH inhibits zinc extraction for all extraction systems due to the formation of zinc ammine complexes in aqueous phase. This effect of HA with CYANEX923 is evidently smaller than that of HA with LIX84I or HA alone system. Effect of anion species on the zinc extraction by HA with CYANEX923 can be neglected, but this effect of HA alone and the mixture of HA with LIX84I decreases in the order of （NH4）2SO4 〉 NH4NO3 〉 NH4Cl.

关键词： synergistic extraction zinc ammoniacal solution β-diketone CYANEX923 LIX84I

Synthesis,fluorescence properties of Eu(Ⅲ) complexes with novel carbazole functionalized β-diketone ligand

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Journal of Rare Earths 2009年第3期27卷 363-368页

作者：唐瑞仁张炜罗一鸣李军 School of Chemistry and Chemical Engineering Central South University

A novel carbazole functionalized β-diketone, methyl 6-（9-ethylcarbazole-3-yl）-oxoacetyl-2-pyridinecarboxylate （MEP）, and its corresponding binary Eu（III） complexes Eu（MEP）y2H2O and ternary complex Eu（MEP）aPhen with 1,10-Phenanthroline （Phen） were prepared. The ligand was characterized based on elemental analysis, FT-IR, and ^1H NMR, and the complexes were characterized with elemental analysis, FT-IR and thermogravimetric and differential thermal analysis （TG-DTA）. The investigation of fluorescence properties of the complexes Eu（MEP）3·2H2O and Eu（MEP）3Phen showed that the Eu（III） ion could be sensitized efficiently by the ligand to some extent, in partitular, in the ternary system, the secondary ligand Phen acting as a light-harvesting center was involved in the highly efficient energy transfer process, and the emission was stronger than the binary complex. In addition, the introduction of the carbazole moiety enlarged the n-conjugated system of the ligand and enhanced the luminescent intensity of the complexes.

关键词： organic ligand carbazole β-diketone 1,10-Phenanthroline fluorescence property rare earths

SYNTHESIS AND MESOMORPHIC PROPERTIES OF PALLADIUM CHELATES OF LIQUID CRYSTAL POLYSILOXANE WITH β-diketone-BASED SIDE CHAINS

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Chinese Journal of Polymer Science 1992年第1期10卷 70-74页

作者：周朝晖戴道荣张榕本 Institute of Chemistry Academia Sinica Beijing 100080

A new type of palladium chelate of β-diketone-based side chain liquid crystal polysiloxane (Pd-DKLCP) has been synthesized by chelation reaction of palladium dichloride with polymeric ligand, β-diketone polysiloxane (DKLCP), using THF as solvent at R.T.. The Pd-chelation results in greatly increasing the phase transition temperature T_K and the enthalpy change △H_K from crystal to liquid crystal state and making the temperature range of LC state △T(△T=T_(Cl)-T_K) widened. All these chelates Pd-DKLCP's do not show T_(Cl) until decomposition at 205℃. It is noteworthy that the Pd-chelation can exert more positive effect on the mesomorphic behaviour of the polymer ligand than the counterpart Cu-DKLCP does. It is probable due to the bigger size of disc-like mesogen formed from β-diketone and Pd^(+2) ion with 4d orbital.

关键词： β-diketone Palladium chelate Metal-coordinating liquid crystal

Synthesis of furanyl-functionalized β-diketone

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Synthesis of furanyl-functionalized β-diketone

Synthesis and luminescence properties of rare earth ternary complexes consisting of Eu(III), β-diketones and 1,10-phenanthroline

中国化学会全国第十二届有机合成化学学术研讨会

作者： Yang,Song You,Fei Tao,Dong-Liang College of Chemistry & Chemical Engineering Fuyang Teachers College

The β-diketonato is still the most important π-conjugated ligands for lanthanide complexes which working as organic fluorescent compounds,because the thermally stablility of the β-diketone is better than other type of ligands such as organic acid and culinary *** electron-donating group,furanyl-functionalized β-diketone could possibly act as a type of useful ligand coordinating with lanthanide metal ions to get novel complexes with potential using as fluorescent ***,less attention has been paid to investigate the synthesis of this kind of ligands because of the high reactivity of the furan *** claisen condensation reaction is the classical synthetic method of β-diketone(Fig.1).But the purification of the products is usually ***,we have developed a practical synthetic approaches for the preparation of the furanyl-functionalized β-diketone ligands with simple purification process(Fig.2)..

关键词： β-diketone furanyl-functionalized claisen condensation

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Journal of Rare Earths 2008年第6期26卷 778-782页

作者：刘兴旺王娜索全伶 School of Chemical Engineering Inner Mongolia University of Technology Baotou Teacher’s College

Three novel β-diketones （HPPP, HTPP, and HFPP） ligands were synthesized by Sonogashira coupling reaction and Claisen condensation. The structure of β-diketones was confirmed with elemental analysis, IR, NMR and MS spectra. Three new ternary complexes consisting of Eu（Ⅲ）, β-diketones, and 1,10-phenanthroline（phen） were synthesized and characterized as TbL3phen （L=PPP, TPP, FPP） with elemental analysis, chemical analysis, and IR spectra, and their luminescence properties were studied.

关键词： β-diketone ternary complex luminescence property rare earths