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phosphonium-Based Ionic Thermally Activated Delayed Fluorescence Emitters for High-Performance Partially Solution-Processed Organic Light-Emitting Diodes

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CCS Chemistry 2023年第3期5卷 589-597页

作者： Xu-Lin Chen Xiao-Dong Tao Ya-Shu Wang Zhuangzhuang Wei Lingyi Meng Dong-Hai Zhang Fu-Lin Lin Can-Zhong Lu State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002 Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi InstitutesChinese Academy of SciencesXiamenFujian 361021 Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China FuzhouFujian 350108

Ionic thermally activated delayed fluorescence(TADF)emitters are rarely investigated due to their poor photoluminescence and electroluminescence performance.Herein,highly efficient ionic TADF emitters with charged donor–acceptor(D–A^(+))and D–A^(+)–D architectures are designed,innovatively based on the phosphonium cation electron acceptor.The symmetric D–A^(+)–D compound in doped film exhibits a high photoluminescence quantum yield of 0.91 and a short emission lifetime of 1.43 microseconds.Partially solution-processed organic lightemitting diodes based on these ionic TADF emitters achieve a maximum external quantum efficiency(EQE)of 18.3%and a peak luminance of 14,532 candelas per square meter(cd/m^(2))and show a small efficiency roll-off of 7.1%(EQE=17%)at a practical high luminance of 1000 cd/m^(2).These results demonstrate the high potential of phosphonium cations as promising electron acceptors to construct TADF emitters for high-performance electroluminescence devices.The current study opens up an appealing way for future exploitation of high-efficiency ionic TADF materials.

关键词： cation acceptor charge transfer phosphonium ionic emitter thermally activated delayed fluorescence partially solution-processed host-guest organic light-emitting diode efficiency roll-off

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Effects of tetrakis (hydroxymethyl) phosphonium sulfate pretreatment on characteristics of sewage sludge

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Journal of Environmental Sciences 2019年第4期31卷 174-182页

作者： Yunping Han Wenzhe Zhang Xiao Yu Panfen Yu Benyi Xiao Hao Yi Research Center for Eco-Environmental Sciences Chinese Academy of Sciences University of Chinese Academy of Sciences College of Textiles and Clothing Qingdao University South China Institute of Environmental Sciences Ministry of Environmental Protection

Recently, tetrakis(hydroxymethyl)phosphonium sulfate(THPS) was found to play an important role in the sludge pretreatment process. However, the effects of THPS pretreatment on the characteristics of sewage sludge are still insufficiently understood.The properties of sludge after pretreatment with different concentrations of THPS were investigated in this study. The results showed that pH, dewatering ability, and particle size of sludge decreased with increase in THPS concentration. The volatile suspended solids(VSS) and total suspended solids(TSS) of sludge also decreased slightly with increase in THPS concentration. The specific oxygen uptake rate(SOUR) results suggested that lower THPS concentrations(≤ 1.87 mg/g VSS) enhanced the activity of sludge, but higher concentrations(≥ 1.87 mg/g VSS) inhibited it. Gram-negative bacteria with peritrichous flagellation(such as Pseudomonas, Escherichia, and Faecalibacterium) were extremely sensitive to THPS. The decrease in specific most probable numbers(MPNs) of pathogens(total coliforms and Escherichia coli) with the increase in THPS concentration also proved the sterilization ability of THPS in the sludge pretreatment process. Pretreatment of sludge with concentrations of THPS higher than 37.41 mg/g VSS would meet the pathogen requirements for land application of Class A biosolids.

关键词： Sewage sludge Tetrakis(hydroxymerhyl) phosphonium sulfate Physicochemical properties Microbial community Pathogens

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Synthesis, Characterization and Performance of a New Type of Alkylene Triphenyl Double Quaternary phosphonium Salt

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Journal of Materials Science and Chemical Engineering 2013年第5期1卷 61-65页

作者： Wei Wei Bin Yuan Song Lv Qifeng Liao Jieyang Huang Faculty of Environmental Science & Engineering Guangdong University of Technology Guangdong China

ByBimolecular Nucleophilic Substitution, four new types of alkylene triphenyl double quaternary phosphonium salt were synthesized respectively by using triphenylphosphine, 1,3-dibromopropane, 1,6-dibromohexane,1,10-dibromo- decane, 1,12-dibromododecane as raw materials and using DMAC as the solvent, under a certain temperature and reac- tion time. The productivity is 58% - 83%. The molecular structures of the products were characterized by IR, NMR and elemental analysis. The sterilizing effect of 1,6-hexylidene triphenyl double phosphonium bromide(HTDPB) and 1,12- dodecylidene triphenyl double phosphonium bromide(DoTDPB) was evaluated by using extinct dilution method.The experimental result shows that the sterilizing effect of DoTDPB is better than the effect of HTDPB under the same drug concentration and contact time. When the concentration of DoTDPB was 20 mg/L and the contact time was 0.5 h, the sterilizing rate of DoTDPB used to kill saprophytic bacteria (TGB), sulfate-reducing bacteria (SRB) and iron bacteria (IB) was 95.56%, 84% and 99.58% respectively.

关键词： Alkylene Triphenyl phosphonium Double Quaternary phosphonium Salt Bactericide Synthesis Performance

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Synthesis, Kinetics and Mechanism of Terpolymerization of Styrene, Vinyl Acetate with Acrylonitrile Initiated by P-Nitrobenzyl Triphenyl phosphonium Ylide

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International Journal of Organic Chemistry 2011年第2期1卷 53-65页

作者： Kiran Prajapati Anuradha Varshney 不详

Synthesis of terpolymers consisting of two electron-donating monomers, viz. styrene and vinyl acetate with one electron-accepting monomer, i.e. acrylonitrile, initiated by p-nitrobenzyl triphenyl phosphonim ylide in dioxane as diluent at 65°C for 150 min has been studied. The kinetic expression is Rpα[I]0.8[Sty] 1.2[VA] 1.4 [AN]1.2. The terpolymer composition was determined by the Kelen-Tüdos method. The values of reactivity ratios using r1 (Sty + VA) = 0.1 and r2 (AN) = 0.005. The overall activation energy is 46 kJ●mol●L–1. The formation of terpolymer is confirmed by the FTIR spectra showing bands at 3030 cm–1, 1598 cm–1, and 2362 cm–1, confirming the presence of phenyl, acetoxy and nitrile group respectively. The terpolymer has been characterized by 1H-Nuclear Magnetic Resonance, 13C-Nuclear Magnetic Resonance. The Differential Scanning Calorimetric curve shows the Tg of the polymer as 149.5°C. A scanning electron microscope confirms the polymer to be phosphorus free. Electron.Spin.Resonance spectra confirms phenyl radical responsible for initiation.

关键词： P-Nitrobenzyltriphenyl phosphonium Ylide (P-NBTPY) Terpolymer Kinetics And Mecha-nism

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Design of ionic liquids as liquid desiccant for an air conditioning system

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Green Energy & Environment 2019年第2期4卷 139-145页

作者： Haruki Watanabe Takuro Komura Ryo Matsumoto Kenta Ito Hiroshi Nakayama Toshiki Nokami Toshiyuki Itoh Department of Chemistry and Biotechnology Graduate School of Engineering Tottori University Chubu Electric Power Company Inc. Research and Development Division Energy Application Research and Development Center Center for Research on Green Sustainable Chemistry Tottori University

Suitable control of the humidity can contribute to electric energy savings. However, the present dehumidification system has many weak points. The liquid desiccant air-conditioning system has recently gained growing interest from the stand point of reducing energy consumption during dehumidification. In order to find the appropriate ionic liquids(ILs) as a desiccant for the liquid desiccant air-conditioner system, we conducted a systematic evaluation of the humidification capability of 16 types of ILs. Among the tested ILs, tributyl(methyl)phosphonium dimethyl phosphate([P4441][DMPO_4]) exhibited the best dehumidification capacity and had a less corrosive effect on four types of metals as possible piping materials. It should be noted that this [P_(4441)][DMPO_4] has a very stable nature and produced no odor while conducting the experiment and storing for over 1 year at room temperature under ambient conditions. Furthermore, it was revealed that a 77%(w/w) aqueous solution of [P4441][DMPO_4] worked as an efficient desiccant liquid for the liquid desiccant air-conditioner system.

关键词： Dehumidification Liquid desiccant Ionic liquids Air-conditioner system phosphonium ILs

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Synthesis and characterization of stable osmafuran starting from HC≡CCH(OH)C≡CH and OsHCl(CO)(PPh_3)_3

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Science China Chemistry 2010年第9期53卷 1978-1981页

作者： ZHANG Hong,LIN Ran,LUO Ming & XIA HaiPing State Key Laboratory for Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China State Key Laboratory for Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen China

This paper presents a new convenient route to prepare osmafuran starting from readily accessible HC≡C CH(OH)C≡CH and OsHCl(CO)(PPh3)3.Treatment of a solution of OsHCl(CO)(PPh3)3 in dichloromethane with HC≡C CH(OH)C≡CH,followed by the addition of acetic acid,produced osmafuran [Os(CHC(PPh3)CO(CH2CH3))Cl(CO)(PPh3)2]Cl(2).2 has been isolated in good yield and fully characterized.1H and 13C NMR spectra show the characteristic downfield chemical shifts of the ring hydrogen and carbon atoms.NMR and X-ray diffraction data provide strong evidence for the aromatic nature of 2.Probably due to the effect of the phosphonium substituent,2 exhibits remarkable thermal stability,air stability and lower reactivity.

关键词： osmafuran metallaaromatics phosphonium salt synthesis stability

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Synthesis of Benzimidazole-based phosphonium Salts as Novel Antimicrobial Agents and Their Bioactivity

Synthesis of Benzimidazole-based Phosphonium Salts as Novel ...

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中国化学会全国第十二届有机合成化学学术研讨会

作者： SYED,Rasheed Gao,Wei-Wei Zhang,Feng-Xiu Zhou,Cheng-He Laboratory of Bioorganic ＆ Medicinal Chemistry Key Laboratory of Applied Chemistry of Chongqing MunicipalitySchool of Chemistry and Chemical EngineeringSouthwest University

Organophosphorus compounds are interesting substances with broad biological activities.They have been also developed to be used as insecticides,herbicides,fungicides and plant growth regulators.In particular,phosphonium salts are becoming a highlighted topic for that they have been frequently found to exhibit a variety of biological activities.They can reduce the drug side effects and enhance the drug stability and bioavailability.In addition,benzimidazoles have been frequently found to display a variety of biological activities and have been successfully developed and extensively used in clinic.The introduction of phosphonium salts in combination with benzimidazole-based compounds may result in largely extended antibacterial and antifungal spectrum and effectively enhance microbial inhibition.Here we would like to develop a class of benzimidazole-based phosphonium salts as novel type of potential antimicrobial agents and evaluate their biological activities.

关键词： benzimidazole phosphonium antibacterial antifungal synthesis

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The synthesis of organic unsaturated rings via metallaaromatics

The synthesis of organic unsaturated rings via metallaaromat...

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中国化学会全国第十二届有机合成化学学术研讨会

作者： Zhang,Hong Xia,Haiping Department of Chemistry Xiamen University

Nowadays,the scope of heteroaromatics is not limited to cyclic conjugated π systems containing main-group atoms or related groups.Metallaaromatics have emerged as special heteroaromatics and attracted continuing interest from both theoretical and experimental chemists.Despite the growing interests and extensive studies in metallaaromatics,full exploitation of the potential of this class of aromatics has not yet been completely achieved.We have developed a convenient and general method for the construction of metallacycles exhibiting surprisingly high stability,especially the aromatic metallacycles. Recently,we demonstrated that interesting organic molecules with novel structures and/or properties can be obtained from the reactions of these metallacycles.

关键词： fused rings aromatic metallaaromatics phosphonium heterocycle

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SYNTHESIS AND CHARACTERIZATION OF TRIPHENYLphosphonium COMPOUNDS

SYNTHESIS AND CHARACTERIZATION OF TRIPHENYLPHOSPHONIUM COMPO...

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第五届全国化学生物学学术会议

作者： Lou Zhaowen~(1,2) Zhou Li~2 Xiao chunfen~2 Ye Yong~2 Zeng Fanbo~1 Huang Kalxun~(1,*) 1 Department of chemistry,HuaZhong University of Science and Technology,Wuhan,Hubei 430074,China 2 Key Laboratory of Synthesis and Application of Organic Functional Molecules of the Education Ministry,Hubei University,Wuhan,Hubei 430062,China

Twelve novel phosphonium compounds,the analogues of anti-cancer drug,which contain acylamino group, were synthesized.[R-(p-CH)-NH-CO-RP(CH)]Cl,R=H(2)、CH(4)、NO(6),R1=-CH-(b),CHCH＜(a), -CH CH-(c),-CH CH CH(d).The structure and property of these compounds are characterized by IR, H-NMR,C-NMR,p-NMR,and MS,TG and conductivity measurement.The anticancer activities of obtained

关键词： phosphonium synthesis characterization anticancer activity

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