Polysulfone (PSF) and sulfonated polysulfone (SPSF) were synthesized and characterized by IR spectra. The performances in ammonia synthesis were investigated and compared at atmospheric pressure and low temperature (25–100°C) using Nafion and SPSF membranes. The results demonstrated that the proton conducting performances of Nafion and SPSF membranes were similar and the rates of evolution of ammonia are almost the same for both of them.

HNAB (2,2′,4,4′,6,6′-hexanitroazobenzene) and its derivatives were optimized to obtain their molecular geometries and electronic structures by using density functional theory at the B3LYP/6-31G* level. Their IR spectra were computed and assigned. Based on the frequencies scaled by 0.96 and the principle of statistical thermodynamics, the thermodynamic properties were evaluated. The isodesmic reactions were applied to calculate the HOF of the title compounds at 298.15 K.

A series of silica gel immobilized lanthanum catalysts were prepared for the atom-economy synthesis of N-substituted carbamates from urea derivatives and dimethyl carbonate. The La/SiO₂ catalysts were characterized by AES, BET, XRD, TEM, FT-IR, XPS and TPD, and the characterization results showed that LaOOH was the possible active species and high surface area was important for the high catalytic activity. By applying the optimized reaction conditions, various carbamates with up to 90% isolated yield were synthesized.

A pair of chromophores with donor-acceptor properties, 3-CCA and 9-ACA, were successfully intercalated into Zn-Al-LDH compounds by a method of ion-exchange procedures in ethylene glycol. The results show the existence of guest-host interaction, guest-guest interaction and guest-guest energy transfer in the co-intercalation compounds. The co-intercalation compounds could be developed for a novel class of layered light energy storage and conversion materials.

An ionic liquid (IL) EPReO₄ (N-ethylpyridinium rheniumate) was prepared. The density and surface tension values of the IL were determined in the temperature range of 293.15–343.15 K. The ionic volume and surface entropy of the IL were estimated by extrapolation, respectively. According to the interstice model, the thermal expansion coefficient of IL EPReO₄ (α) was calculated and compared with experimental value, finding their magnitude order is in good agreement by 8.98%.

A series of binder-free ZSM-5 zeolite catalysts with various SAR were prepared and evaluated in methanol dehydration to DME process. The binder-free catalyst MD3 with low SAR of about 30 presents excellent catalytic performance compared to that of the binder-containing one MD5, because of its large amount of weak and medium strength acid sites, open channels and richness in mesopores.

The aromatic rings in the spacer of light-sensitive Gemini surfactants MC_m(azo)MC_m adopt an orientation parallel or near-parallel to the air/water interface in the Langmuir monolayer no matter whether they are irradiated. This is believed to be due to the absence of ionic groups in the headgroup-region.

The preferential binding site of BINOL with lecithin liposomes is located in the headgroup region. Furthermore, their non-polar aromatic portion extends towards the hydrocarbon part of the bilayer.

Star-shaped molecules that comprise a 1,3,5-trisub- stitued benzene core and three oligoaryleneethynylene arms show great potential for application in organic light-emitting devices (OLEDs). Their optical and electronic properties are tuned by the star-shaped molecular size, namely, the number of dimethoxyphenyleneethynylene units and the number of the methoxy groups on the terminal benzene rings at each arm. To reveal the relationship between the properties and structures, we apply quantum-chemical techniques to investigate these organic star-shaped molecules.

A new convenient method for preparing multiwall carbon nanotube (MWNT)/ nanoparticle composites was developed. MWNT was modified orderly with carboxyl groups and amino groups. Negatively charged gold nanoparticles were anchored on the surface of the amino-functionalized MWNT. This method decorating carbon nanotubes can be used to identify the defect sites on carbon nanotubes.

The figure shows the effect of 5 μmol·L⁻¹ of the five complexs and cis-platin on breast cancer cell viability after 48 h of incubation. complex 5 (n=6) and 4 (n=5) showed much higher cytotoxicity than those of cis-platin. On the other hand, complex 3 (n=4) was found to be moderately active, and complex 1 (n=2), complex 2 (n=3) were found only marginally cytotoxic.

A new mixed ligand palladium(II) complex with bidentate NS-donor chelate, [PdCl(PPh₃)L] (L: S-allyl β-N-(benzylidene)dithiocarbazate), has been prepared and characterized using single crystal X-ray diffraction and spectroscopic (electronic, IR, ¹H NMR and ¹³C NMR) techniques. Visualizing and exploring the crystal structure using Hirshfeld surface analysis showed the presence of Π···Π, N···Π, C–H···Π, Cl···H and weak C–H···S interactions as most important intermolecular interactions in the crystal lattice, which are responsible to extension of the supramolecular network of the compound and stabilization of the crystal structure.

A novel porous polymeric monolithic column based on poly(high internal phase emulsion) methacrylate monolith was prepared and applied to fast separation of proteins. Immunoglobulin was separated from human plasma and chicken egg yolk with high resolution on the hydrophobic interaction chromatographic column in a short time. Fast separation of a two mode protein mixture (α-amylase and lysozyme) on the monolith was achieved within 1.5 min at a velocity of 1445 cm·h⁻¹.

Asymmetric ring-opening reactions of N-Boc-azabenzonorbornadiene with N-substituted piperazine nucleophiles in the presence of 5 mol% of [Rh(COD)Cl]₂ and 10 mol% of chiral ligand, (R,S)-PPF-P-t-Bu₂, gave the corresponding 1,2-diamine product in moderate to excellent yields (up to 95%) with reasonable enantiomeric excesses (up to 70% ee). The results showed that the nature of ligands had significant influence on the yields and the enantiomeric excesses.

Synthetic route to 5,5-diphenylhydantoins from urea and benzil derivatives in ethanolic KOH under ultrasound irradiation at room temperature.

For the first time, sillica-supported sulfuric acid has been used as a heterogeneous, reusable and efficient catalyst at room temperature to give the corresponding dipyrromethanes in a very short reaction time. The new reaction procedure is simple and solvent is not required.

Condensation of maleic anhydride or dimethyl maleate with benzylaldehydes controlled by tris(4-anisyl)phosphine to synthesize dimethyl (E)-2-benzylidenesuccinates has been systematically investigated. The protocol gives the products with high stereoselectivity in moderate to good yields under mild conditions. A plausible mechanism has been proposed.

β-Aminoalcohols were synthesized in high yields by reaction of epoxides with amines in the presence of MCM-41 as a green and reusable catalyst under solvent-free conditions.

Vapor phase acylation of veratrole with ethyl acetate over w=15% H₃PO₄/ TiO₂-ZrO₂-surf has been investigated. In the presence of this catalyst and with ethyl acetate as an environmentally friendly acylating agent without any corrosion problem, excellent activity and high 3,4-dimethoxyacetophenone selectivity (>99%) were obtained.

A new multinuclear dibutyltin(IV) complex [(n-Bu)₄Sn₂{2,5-F₂C₆H₃C(O)NH- O}₂{2,5-F₂C₆H₃C(NO)O}]₂ was synthesized, which exhibited higher in vitro antitumor activity against a murine sarcoma carcinoma cell line (S-180) than that of 5-fluorouracil (5-Fu), currently used clinically antitumor agent.

A new and efficient way was developed to carry out the reaction of 4,4,4-trifluoro-1- phenylbutane-1,3-dione with iodobenzene diacetate under the assistance of Cu(II) and 2,2′-biimidazole at a low temperature in excellent yield. 2-Acetoxyacetophenones were obtained unexpectedly.

A rapid one-pot synthesis of imidazo[1,2-a]pyridines was developed in the presence of heteropolyacids as economically and environmentally attractive catalysts, under solvent-free conditions using aldehydes, isonitriles and 2-aminopyridines.

The design and synthesis of two aromatic amines with dendritic structures have been conducted via Hofmann rearrangement. A coupling reaction of three or two equivalents of benzyl bromide to one equivalent of methyl hydroxybenzoate generated the intermediate benzyloxybenzoates in high yields.

An efficient synthesis of the new tetracyclic heterocyle from iminoposphorane was provided. The structure of the title compound was confirmed by X-ray structure analysis.

A micellar electrokinetic capillary chromatography method with electrochemical detection (MECC-ED) has been developed for the simultaneous determination of eight phenolic additives, including four antioxidants (PG, TBHQ, BHA and BHT) and four preservatives (MP, EP, PP and BP), in cosmetic products. The detection limits (S/N=3) ranged from 1.1×10⁻⁷ to 1.2×10⁻⁶ g·mL⁻¹ for all analytes. This proposed method has been successfully applied to the simultaneous determination of the above additives in commercial cosmetics with satisfactory results.

The biotransformation of methyl paraben (MP) in p-hydroxybenzoic acid (pHBA) and phenol (Phe) in earthworm Eisenia foetida was assessed by an ultra performance liquid chromatography (UPLC) method with a BEH (bridged ethane-silicon hybrid) C₁₈ column (2.1×50 mm i.d., 1.7 µm particle size), using methanol/water/phosphoric acid as mobile phase, under a gradient elution program.

Protein nanotubes with different outside diameters and wall thicknesses have been prepared. It was found that the wall thickness of the protein nanotubes increased with the augment of the number of layers deposited on the pore walls. The synthesis procedure was shown in the above figure.