bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis and Crystal Structures of Three Ladder Distannoxane Dimers [(PhCH2)2(Cl)SnOSn(X) (CH2Ph)2]2 (X = Cl, OMe, OEt)
Authors: Chun‐Lin Ma , Feng Li 
Published: September 2010

AbstractThree distannoxane dimers [(PhCH2)2(Cl)SnOSn(X) (CH2Ph)2]2 (X = Cl, OMe, OEt) were prepared by the hydrolytic reaction of (PhCH2)2SnCl2 with sodium alkoxides. The compounds are assigned tetranuclear distannoxane structures in solid state, which contain the so‐called ladder arrangement with a central planar Sn2O2 four‐membered ring. The endo‐and exo‐cyclic Sn atoms are both five‐coordinate, and have distorted trigonal bipyramidal geometries. A variety of hydrolyses of (PhCH2)2SnCl2 were performed and these dimers were characterized by IR, 1H NMR spectroscopy and X‐ray diffraction analysis.
Flow‐injection Chemiluminescence Determination of Reserpine in Medicine and Biological Fluids with Controlled‐Reagent‐Release Technology
Authors: Zheng‐Hua Song , Ni Zhang 
Published: September 2010

AbstractA sensitive and rapid chemiluminescence (CL) flow injection with controlled‐reagent‐release technology for the determination of reserpine was proposed. The CL reagents, luminol and dichromate, used in this sensor, were all immobilized on anion‐exchange resin. Through injection of 100 μL of water, the reagents on the anion‐exchange resin column were eluted and in the presence of reserpine, the CL intensity was decreased, by which reserpine could be sensed. Reserpine was quantified by measuring the decrement of CL intensity, which was observed linear with the logarithm of reserpine concentration in the range of 1.0–500.0 ng/mL, and the limit of detection was 0.4 ng/mL (3σ) with a relative standard deviation of less than 3.0%. The proposed procedure was applied in the assay of reserpine in pharmaceutical preparation and biological fluids without any pre‐treatment process and with sampling frequencies of 72 times per hour.
A Direct Evidence of Stoichiometric Displacement between Insulin and Methanol in Reversed Phase Liquid Chromatography
Authors: Xin‐Du Geng , Fred E. Regnier 
Published: September 2010

AbstractWith four kinds of mobile phases, methanol‐water, ethanol‐water, 2‐propanol and acetonitrile‐water (all containing 0.1% trifluroacetic acid), the displacement between solute and solvent in RPLC was proved to be universal in frontal analysis (FA). Based on the measured Z value in usual RPLC to be a constant and the quantitative determination of methanol increment in mobile phase in FA, the stoichiometric displacement (SD) between insulin and methanol was directly proved by the experiment. The SD was also proved to occur only on about the one‐fourth of the maximum amount of adsorbed methanol in the bonded phase layer (BPL) without any dynamic problem of mass transfer, while in FA, the SD firstly occurs on the surface of the BPL and then gradually sinks into the deeper sites companied with a dynamic problem. Although the displaced solvent by the same solute is less in the former case, the SD is independent of how deep of the solute enters the BPL. In addition, the adsorbed amount of solute on an adsorbent not only depends on the numbers of the adsorbed layer on the adsorbent surface, but also on the extent of me complete removal of the displace‐able solvent in the BPL. The physical fundamental of the SD and the methodology for investigation were also discussed.
A Novel Fluorescent Reagent for Analysis of Hydrogen Peroxide
Authors: Su‐Ying Dong , Mei‐Hong Su , Li‐Hua Nie , Hui‐Min Ma 
Published: September 2010

Abstract8‐(4,6‐Dichloro‐1,3,5‐triazinoxy)quinoline (DTQ) was evaluated as a new fluorescent reagent for determining hydrogen peroxide. It was found that the fluorescence intensity of DTQ in alkaline medium could be dramatically enhanced upon addition of H2Q2. Based on this effect, a simple and selective method for the spectrofluorimetric determination of hydrogen peroxide was established. The relative standard deviation of the method was found to be 1.1% for 9 replicate determinations of a 4.6 × 10–6 mol/L hydrogen peroxide solution. The linear range was 2.3 × 10–7—2.3 × 10–5 mol/L with a detection limit of 2.2 × 10–8 mol/L (S/N = 3). The method was attempted to determine hydrogen peroxide in synthetic human serum samples with satisfactory results.
Tuning the Excited‐state Properties of Cyclometalated Platinum (II) Complexes of 6‐Phenyl‐2,2′‐bipyridine by Ancillary Acetylide Ligand
Authors: Zi‐Xin Wu , Li‐Zhu Wu , Qing‐Zheng Yang , Li‐Ping Zhang , Chen‐Ho Tung 
Published: September 2010

AbstractA series of luminescent cyclometalated platinum (II) complexes, (CNN)Pt(CC̊) [HCNN = 4‐(4‐tolyl)‐6‐phenyl‐2,2′‐bipyridine; R = 4‐chlorophenyl (1), phenyl (2) and 4‐tolyl (3)], were synthesized, and their spectroscopic properties have been examined. These complexes are brightly emissive both in fluid solution and in the solid state, attributed to triplet metal‐to‐ligand charge transfer (3MLCT) state. The excited state energy can be tuned by ancillary acetylide ligands. The emission lifetimes in dichloro‐methane solution at room temperature were up to 1.64 μs and the emission quantum yields were in the range of 0.03–0.15.
Optical Rotatory Feature of (R or S)‐1, 1′‐Binaphthalene‐2, 2′‐diol (BINOL) in Various Solvents
Authors: Chuan‐Fu Chen , Zhong Li , Min Ai , Yong‐Ming Chen , Fu Xi 
Published: September 2010

AbstractThe changes of the specific rotation and sign of optically active BINOL have been studied in polar/non‐polar solvents and at the different pH values of solvent. It is considered that these changes are determined by the equilibrium studies between cisoid and transoid conformations of BINOL with the same configuration (R or S) which related to the change of the dihedral angle between two naphthalene ring planes of BINOL.
Construction of CdS Nanoparticle Chain on DNA Template
Authors: Jian Jin , Lin Jiang , Xia Chen , Wen‐Sheng Yang , Tie‐Jin Li 
Published: September 2010

AbstractSalmon sperm DNA was used as template to assembly and nucleate CdS nanoparticles. Transmission electron microscopy (TEM) images showed that the CdS nanoparticles formed unique nanostructure which present regular and parallel chains along DNA molecular chain. The width of every chain was about 3 nm. Raman and X‐ray photoelectron energy spectroscopy (XPS) confirmed that the nucleation sites of CdS nanoparticles were phosphate acid groups of DNA.
Preparation of Aromatic Amines by Reduction of Aromatic Nitro Compounds with Metallic Tellurium in Near‐Critical Water
Authors: Lei Wang , Pin‐Hua Li , Zhao‐Qin Jiang 
Published: September 2010

AbstractAromatic amines were prepared in good yields by a novel reduction of aromatic nitro compounds with tellurium metal in near‐critical water at 275°C.
Low Temperature Synthesis and Characterization of Li1.2‐yNayV3O8 (0 ≤ y ≤ 1.2) from V2O5 Gel
Authors: Jing‐Gang Xie , Jle Xiao , Hui Zhan , Yun‐Hong Zhou 
Published: September 2010

AbstractWithout overnight heating and stirring, Li1.2V3O8 and its analogs Li1.2‐yNayV3O8 (0 ≤ y ≤ 1.2) were successfully synthesized by adding mixed solution of LiOH and NaVO3 to V2O5 gel and dehydrating the prepared gel in 150–350°C. The simplicity awards this synthesis process superiority over other low temperature synthesis routes when mass production is concerned. TG‐DTA, XRD and TEM experiments were carried out for physical characterization. By galvanostatic charge‐discharge and cyclic voltammetry tests, these products showed better electrochemical performance than high temperature products as cathode active materials in secondary lithium batteries. After treatment of Li1.2V3O8 at 250°C, it exhibited a capacity of 350 mAh/g when cycled at current rate of about 60 mA/g over the voltage range of 3.8–1.7 V vs. Li+/Li. The influence of partial substitution of Li by Na was also extensively studied.
Study on Synthesis and Electrochemical Properties of Nanophase Li‐Mn‐spinel
Authors: Chuan‐Qi Feng , Ke‐Li Zhang , Ju‐Tang Sun , Hao Tang 
Published: September 2010

AbstractLi‐Mn‐spinel was synthesized using the rheological phase reaction method. First, the precursor was prepared by rheological phase reaction. Then it was decomposed to form Li‐Mn‐spinel, which was characterized by X‐ray diffraction analysis and IR spectra. The particle size of Li‐Mn‐spinel was determined by the method of the transmission electron microscopy. The synthesized materials are of nanometer size with 30—100 nm in the average diameter. The electrochemical properties of the Li‐Mn‐spinel were also studied. It proved that this method not only provided a simple practicable and effective route for the synthesis of Li‐Mn‐spinel, but also had many advantages such as lower sintering temperature, shorter sintering time, fine particles and particularly excellent electrochemical performances.
A Sensitive Fluorescence Quenching Method for the Determination of Iron (II) with 1,10‐Phenanthroline
Authors: Guang‐Hua Zhu , Huang‐Xian Ju , Bao‐Fen Ye 
Published: September 2010

AbstractA sensitive and selective fluorescence quenching method for the determination of Fe2+ with 1,10‐phenanthroline was developed. The fluorescence intensity of 1,10‐phenanthroline at λex of 266 run and λem of 365 nm was constant in the range of pH 4.0 to 10.0 and decreased linearly upon addition of Fe2+ to its solution. This decrease was mainly due to a static quenching effect caused by the formation of a non‐fluorescent complex of Fe2+ with 1, 10‐phenanthroline. The total amount of iron was determined by using hydroxylamine hydrochloride to reduce Fe3+ to Fe2+. The linear range was from 5.0 × 10–7 to 2.0 × 10–5 mol/L with a detection limit of 2.4 × 10–8 mol/L at 3s̀. The quenching constant of Fe2+ to 1,10‐phenanthroline was calculated to be (5.70 × 0.05) × 104 L/mol at 25 °C. Effects of foreign ions on the determination of Fe2+ were investigated. The results of the new method for the determination of iron in tap water and natural water samples were in good agreement with those obtained by graphite atomic absorption spectrometry.
Evaluation of Bioeffects of a Long‐term Administering Change on Rat by Proton NMR Method and Biochemical Examination
Authors: Jiang‐Hua Feng , Xiao‐Jing Li , Feng‐Kui Pei , Yu‐Xiu Niu 
Published: September 2010

AbstractHigh resolution1H nuclear magnetic resonance (NMR) spectroscopy has been employed to assess long‐term toxicological effects of ChangLe (a kind of rare earth complex applied in agriculture). Male Wistar rats were administrated orally with ChangLe at doses of 0, 0.1, 0.2, 2.0, 10 and 20 mg/kg body weight daily, respectively, for 6 months. Urine was collected at day 30, 60, 90 and serum samples were taken after 6 months. Many low‐molecular weight metabolites were identified by1H NMR spectra of rat urine. A decrease in citrate and an increase in ketone bodies, creatinine, DMA, DMG, TMAO, and taurine in the urine of the rats receiving high doses were found by1H NMR spectra. These may mean that high‐dosage of ChangLe impairs the specific region of liver and kidney, such as renal tubule and mitochondria. The decrease in citrate and the increase in succinate and α‐ketoglutarate were attributed to a combination of the inhibition of certain citric acid enzymes, renal tubular acidosis and the abnormal fatty acid catabolism. The information of the renal capillary necrosis could be derived from the increase in DMA, DMG and TMAO. The increase in taurine was due to hepatic mitochondria dysfunction. The conclusions were supported by the results of biochemical measurements and enzymatic assay. No obviously toxicological effects on metabolism were found for low‐dosage ChangLe, but further studies on safety of ChangLe applied to agriculture are still required.
A Rapid and Efficient Biginelli Reaction Catalyzed by Zinc Triflate
Authors: Hui Xu , Yan‐Guang Wang 
Published: September 2010

AbstractAn efficient and practical procedure for the synthesis of dihydropyrimidinones from aldehydes, 1,3‐dicarbonyl compounds and urea under solvent‐free reaction condition using zinc triflate as a catalyst is described. In comparison with the classical Biginelli reaction, the yields for this new procedure increased from 20%—50% to 75%— 98% while the reaction time was significantly shortened from 18 h to 20 min.
A Density Functional Theory Study on Electronic Structure and Second‐order Nonlinear Optical Properties of Some Push‐Pull Molecules
Authors: Rong‐Jian Sa , Ke‐Chen Wu , Chen‐Sheng Lin , Ping Liu , Chao‐Yong Mang 
Published: September 2010

AbstractTime‐dependent density‐functional theory (TDDFT) has been applied to calculate the electronic structure and second‐order nonlinear optical (NLO) properties of some organic molecules. The two‐dimensional (2‐D) charge transfer characteristics of calculated molecules were studied and compared with corresponding experimental results. All the theoretical results agree well with the measurement. For 2‐D molecule with two‐fold symmetry, the dominant charge transfer is off‐diagonal, while for three‐fold symmetry 2‐D molecule, the dominant charge transfer is not only between branches and central group but also among branches.
Studies on Structure and Electrocatalytic Hydrogen Evolution of Nanocrystalline Ni‐Mo‐Fe Alloy Electrodeposit Electrodes
Authors: Ling Huang , Fang‐Zu Yang , Shi‐Gang Sun , Shu‐Kai Xu , Shao‐Min Zhou 
Published: September 2010

AbstractNanocrystalline Ni‐Mo‐Fe alloy deposits were obtained by electrode‐position. The structures of the alloy deposits were analyzed by X‐ray diffraction (XRD) and X‐ray photoelectron spectroscopy (XPS). The XRD results of nanocrystalline Ni‐Mo‐Fe alloy deposit show that many diffraction lines disappear, and that there is only one diffraction peak at 44.0°. The XPS results of nanocrystalline Ni‐Mo‐Fe alloy deposits indicate that the nickel, molybdenum and iron of the deposits exist in metallic state, and that the binding energy of the alloyed elements increases to some extent. The nanocrystalline Ni‐Mo‐Fe alloy deposit electrode may offer better electrocatalytic activity than the polycrystalline nickel electrode and the nanocrystalline Ni‐Mo alloy electrode. The electrochemical impedance spectra from the nanocrystalline Ni‐Mo‐Fe alloy electrode indicate that hydrogen evolution in 30% (m/m) KOH at lower overpotential is in accordance with the Vohner‐Tafel mechanism, but with the Vohner‐Heyrovsky mechanism at higher overpotential.
In situ Observation of the Photochromism in the Langmuir Monolayer of a Non‐typical Amphiphilic Spiropyran Derivative at the Air/Water Interface
Authors: Hao‐Fei Gong , Ji‐An Tang , Ming‐Hue Liu , Cong‐Min Wang , Mei‐Gong Fan 
Published: September 2010

AbstractIn situ photochromic process in the monolayer of a photochromic spiropyran derivative without long alkyl chain, was investigated. The photochromism at the air/water interface under different surface pressures was studied by surface pressure‐area isotherms, surface pressure‐time curves, area‐time curves and Brewster angle microscopy. Both forms of the compound were found to form monolayers at the air/water interface although it does not have long alkyl chain. A large area expansion in the monolayer corresponding to a zeroth order reaction was found at the initial stage of the UV light irradiation. A series of dynamic investigations revealed that at high pressure after phase transition in the monolayer, the surface pressure changes greatly under alternative irradiation of UV and visible light An obvious morphological change accompanying with the photochromism was observed in situ.
Heat Capacities and Thermodynamic Properties of Lanthanum/Holmium Perchlorate Complexes with Glycine
Authors: Bei‐Ping Liu , Zhi‐Cheng Tan , Hua‐Guang Yu , Li‐Xian Sun , Xiao‐Zheng Lan , You‐Ying Di , Zhen‐Gan Chen , Ping Liu 
Published: September 2010

AbstractThe heat capacities of the two complexes, [La2(Gly)6(H2O)4]‐(ClO4)6 and [Ho2(Gly)4(H2O)4](ClO4)6·2H2O (Gly = glycine), were measured by adiabatic calorimetry in the temperature range from 78 to 375 K. A solid‐solid phase transition was found between 322.87 and 342.29 K for [Ho2(Gly)6(H2O)4](ClO4)6·2H2O, and the peak temperature, the enthalpy and the entropy of the transition were obtained to be 330.94 K, 11.65 kJ·mol−1 and 35.20 J· K−1·mol−1, respectively. No indication of any phase transition or thermal anomaly was observed for [La2 (Gly)6 (H2O)4 ] (ClO4)6. Thermal stabilities of the two complexes were investigated by thermogravimetry in the temperature range of 40–800°C. The possible mechanisms for the thermal decompositions were proposed according to the TG and DTG curves.
Hydrothermal Synthesis and Structure of a New 3D Lanthanide‐Carboxylate Framework, [La(btec)1/2 (H2btec)1/2 (H2O)]n (H4btec = 1,2,4,5‐Benzenetetracarboxylic acid)
Authors: Dao‐Feng Sun , Wen‐Hua Bi , Rong Cao , Xing Li , Qian Shi , Mao‐Chun Hong 
Published: September 2010

AbstractThe title complex, [La(btec)1/2(H2btec)1/2 (H2O)]n (H4btec= 1, 2,4,5‐benzenetetracarboxylic acid) (1) was synthesized by the hydrothermal reaction of 1,2,4,5‐benzenetetracarboxylic dianhydride with La(NO3)3·6H2O in H2O, and crystallizes in the triclinic system, space group P‐1 with a = 0.64403(3) nm, b = 0.94500(4) nm, c = 0.96380(5) nm, a = 88.535(2)°, β = 100.314(2)°, γ = 76.6470(10)°, V = 1.60968(10) nm3, Z = 2, and final R = 0.0274, Rw = 0.0735. In 1, each La(m) ion is coordinated by eight oxygen atoms from six carboxylate groups and one coordinated water molecule. Two different coordination modes of H4btec were present in the structure, one of which contains two protonated carboxylate groups to balance the charge.
Synthesis, Characterization and Crystal Structures of Lanthanide Phenoxyacetate Complexes with 1,10‐Phenanthroline
Authors: Hong Deng , Yue‐Peng Cai , Hui Chao , Chun‐Long Chen , Cai‐Wu Jiang , Liang‐Nian Ji , Chao‐Qiu Chen 
Published: September 2010

AbstractThree new lanthanide phenoxyacetate complexes with 1,10‐phenanthroline. [Nd(POA)3 (phen)]2 · 2C2H5OH (1), [Eu(POA)3‐ (phen)]2 · 2C2H5OH (2) and [Sm(POA)2(DMSO)(phen)]2‐ (ClO4)2 (3) (POA= phenoxyacetate, phen = 1,10‐phenanthroline, DMSO = dimethyl sulfoxide), were synthesized and characterized by elemental analyses, IR, UV‐vis and FAB‐MS spectra. Their structures were determined by single crystal X‐ray diffraction analysis. In complexes 1 and 2, the carboxylate groups are bonded to Ln3+ ion in three modes: the chelating bidentate, the bridging bidentate and the bridging tridentate. In complex 3, the carboxylate groups are bonded to Sm3+ ion only involved in one mode: the bridging bidentate. The luminescence behavior of complex 2 was also studied by means of emission spectra.
Sonogashira Coupling Reaction with Palladium Powder and Potassium Fluoride in Methanol
Authors: Lei Wang , Pin‐Hua Li 
Published: September 2010

AbstractA Sonogashira coupling reaction of aromatic halides with terminal alkynes in the presence of palladium powder, potassium fluoride, cuprous iodide and triphenylphosphine in methanol, giving the corresponding coupling products aryl alkynes in good to excellent yields, was investigated.
Ethylene Oligomerization by 8‐Aminoquinoline Nickel Dichloride Complex Supported on β‐Cyclodextrin#
Authors: Yong Chen , Ning Zhu , Zi‐Long Li , Wen‐Hua Sun 
Published: September 2010

Abstractβ‐Cyclodextrin was pretreated by methylaluminoxane (MAO) and subsequently reacted with 8‐aminoquinoline nickel dichloride complex to yield the supported catalyst, which was characterized by ICP, IR and XPS methods. Using MAO as cocatalyst, the catalytic activity of this supported catalyst was investigated at various reaction temperature and AI/Ni molecular ratio. The results showed that, despite possessing a number of polar groups, the supported catalyst displayed relatively high activity over 1 × 105 g ethylene/(mol Ni·h) under mild conditions.
Synthesis, Crystal Structure and Magnetic Properties of a 1‐D Polymer, [Cu(NITpPy)2(H2TCB)(H20)]·2H2O
Authors: Li‐Ya Wang , Li‐Cun Li , Dai‐Zheng Liao , Zong‐Hui Jiang , Shi‐Ping Yan 
Published: September 2010

AbstractA novel complex [Cu(NnpPy)2(HlTCB)(H1O)]·2H2O (NITpPy = 2‐(pyrid‐4′‐yl)‐4,4,5,5‐tetramethyl‐1, 3‐dioxoimidazoline; H2TCB = 1, 5‐dicarboxybenzene carboxylic‐2, 4‐diacid) has been synthesized and characterized by X‐ray crystallography analysis. The crystal structure consists of infinite chains of Cu‐(NITpPy)2(H2O) units linked by H2TCB ligands. The complex crystallizes in triclinic system with space group PI. Crystal data: a = 1.0594(2) nm, b = 1.3830(3) nm, c = 1.5551(3) nm, a = 67.75(3)°, β = 89.83(3)°, γ = 70.54(3)°. The variable magnetic susceptibility studies lead to magnetic coupling constant values of J1= −11.18 cm‐1 (Cu—Rad) and J2 = −4.06 cm−1 (Cu—Cu).
Synthesis and Crystal Structure of Two One‐dimensional Chain Copper Complexes [Cu(TTA)2(4,4′‐azpy)] and [Cu(TTA)2(3,3′‐azpy)]
Authors: Bao‐Long Li , Jian‐Ping Lang , Jing Chen , Yong Zhang , Li‐Min Zheng 
Published: September 2010

AbstractTwo copper complexes [Cu(TTA)2(4,4′‐azpy)] (1) and [Cu‐(TTA)2(3,3′‐azpy)] (2) (HTTA = 1,1,1‐trifluoro‐3‐(2‐thenoyl)‐acetone, 4,4′‐azpy = 4,4′‐azobispyridine, 3,3′‐azpy = 3,3′‐azobispyridine) were synthesized and characterized. The crystal structures were determined by X‐ray diffraction analysis. The crystal 1 belongs to triclinic with space group P1, a = 0.8515(2) nm, b = 0.9259(2) nm, c = 0.9468(2) nm, a = 66.126(9)°, β = 79.667(9)°, γ = 90.13(1)°, Z = 1, V = 0.6692(2) nm3, Dc = 3.425 g/cm3, γ = 2.113 mm−1, F(000) = 694, R1 = 0.0594, wR2 = 0.1499. The crystal 2 belongs to monoclinic with space group P21/c, a = 1.0661(2) nm, b = 1.4296(3) ran, c = 1.0041(3) nm, β = 114.50(3)°, V = 1.3926(5) nm3, Z = 2, Dc = 1.646 g/ cm3, μ = 1.015 mm−1, F(000) = 694, R1, = 0.0535, wR2 = 0.1113. In the crystals of complexes 1 and 2, the copper atoms have distorted octahedral symmetry. The two compounds possess very similar one‐dimensional linear chains linked through the rodlike 4,4′‐azpy ligands or 3,3′‐azpy ligands.
Application of Single‐labelled Probe‐primer in PCR Amplification to the Detection of Hepatitis B Virus DNA
Authors: De‐Ming Kong , Han‐Xi Shen 
Published: September 2010

AbstractA new method based on the incorporation of a single‐labelled probeprimer into polymerase chain reaction (PCR) for the detection of PCR‐amplified DNA in a closed system is reported. The probeprimer consists of a specific probe sequence on the 5′ ‐end and a primer sequence on the 3′‐end. A fluorophore is located at the 5′‐end. The primer‐quencher is an oligonucleotide, which is complementary to the probe sequence of probe‐primer and labelled with a quencher at the 3′‐end. In the duplex formed by probe‐primer and primer‐quencher, the fluorophore and quencher are kept in close proximity to each other. Therefore the fluorescence is quenched. During PCR amplification, the specific probe sequence of probe‐primer binds to its complement within the same strand of DNA, and is cleaved by Taq DNA polymerase, resulting in the restoration of fluorescence. This system has the same energy transfer mechanism as molecular beacons, and a good quenching efficiency can be ensured. Following optimization of PCR conditions, this method was used to detect hepatitis B virus (HBV) DNA in patient sera. This technology eliminates the risk of carry‐over contamination, simplifies the amplification assay and opens up new possibilities for the real‐time detection of the amplified DNA.
A Novel Catalyst for Isobutene Oligomerization to High Quality Gasoline
Authors: Peng Zhou , Zeng‐Jian An , Tian‐Xi Cai , Xi‐Gao Jian 
Published: September 2010

AbstractDimerization of isobutene in liquid state to form high‐octane value gasoline components was investigated over a homemade novel ion exchange resin, SPPESK, which shows high activity and selectivity in isobutene dimerization under mild conditions.