bluuebunny/crossref_metadata_2025_split huggingface dataset:
Electrochemistry of 2′-Anthraquinone-modified Oligonucleotide Immobilized on Gold Surface: Differential Electron Transfer Efficiency between Single and Double Helical Forms
Authors: Yamana Kazushige , Kumamoto Satoshi , Hasegawa Tetsuya , Nakano Hidehiko , Sugie Yosohiro 
Published: September 2002

Abstract
2′-Anthraquinone-modified oligonucleotide (AQ-ODN) possessing a disulfide terminus has been immobilized on gold surface. The AQ-ODN modified electrode exhibited faster electron transferability in double-stranded form than that in single-stranded form, providing a new type of electrochemical DNA sensing device.
Synthesis, Structure and Nonlinear Optical Properties of a Novel Cluster Compound Containing 1,1′-Bis(diphenylphosphino)ferrocene(dppf)
Authors: Cai Ya , Song Yinglin , Zheng Hegen , Niu Yunyin , Du Chenxia , Xin Xinquan 
Published: September 2002

Abstract
A novel cluster WCu2S4(dppf)2·4DMF was synthesized by the reaction of (NH4)2WS4 with CuCl and 1,1′-bis(diphenylphosphino)ferrocene (dppf) in the solid state, and its crystal structure has been characterized by X-ray diffraction. The cluster has a novel new skeletal structure with five metal atoms nearly in a line. Investigation of third-order optical nonlinear z-scan shows that it exhibits good nonlinear optical properties in a 1.2×10-4 mol·dm-3 DMF solution.
Photoinduced Electron Transfer Reaction of Tetraazathiapentalenes with Trialkylamines
Authors: Hayashi Hirokazu , Matsumura Noboru , Mizuno Kazuhiko 
Published: September 2002

Abstract
The photoinduced electron transfer reaction of tetraazathiapentalenes with trialkylamines gives thiourea derivatives by dialkylamination of isothiocyanate derivatives, through radical anions of tetraazathiapentalenes and radical cations of trialkylamines.
Photophysical and Photochemical Properties of Decakis-Adduct of C120 and Related Compounds
Authors: Fujitsuka Mamoru , Fujiwara Koichi , Murata Yasujiro , Ito Osamu , Komatsu Koichi 
Published: September 2002

Abstract
Photophysical and photochemical properties of a decakis-adduct of C120 and related compounds were investigated. Ground state absorption spectrum of the C120 derivative showed structureless feature due to the interaction of fullerene-cages. The fluorescence quantum yields of the adducts showed ten times increase compared with pristine C60, while they were 1/6 of a hexapyrrolidine derivative of C60. Triplet absorption bands appeared at 670 nm. The quantum yields for the intersystem crossing of the adducts were as small as 0.12–0.19.
New Large-Scale Preparations of Versatile 6-O-Monotosyl and 6-Monohydroxy Permethylated α-, β-, and γ-Cyclodextrins
Authors: Kaneda Takahiro , Fujimoto Tatsuhiko , Goto Jun’ichiro , Asano Kaori , Yasufuku Yoshitaka , Jung Jone Hwa , Hosono Chiaki , Sakata Yoshiteru 
Published: September 2002

Abstract
New practical methods for preparation of versatile 6-O-monotosyl and 6-monohydroxy permethylated α-, β-, and γ-cyclodextrins are described.
Enhanced Binding Ability of β-Cyclodextrin Bearing Seven Hydrophobic Chains Each with a Hydrophilic End Group
Authors: Imamura Kazuhisa , Ikeda Hiroshi , Ueno Akihiko 
Published: September 2002

Abstract
Seven adipic acid units each with a D-glucamine unit at the end were introduced to primary hydroxyl side of β-cyclodextrin to enlarge the hydrophobic cavity. The modification remarkably enhanced the binding ability for larger guests.
Heavy-Row Atom Effects on the Strength of the Weak Nonbonded Interactions between Divalent Selenium and Halogen Atoms
Authors: Iwaoka Michio , Katsuda Takayuki , Tomoda Shuji , Harada Jun , Ogawa Keiichiro 
Published: September 2002

Abstract
The 77Se NMR chemical shifts observed for 2-selenobenzyl halide derivatives and the density functional theoretical calculation revealed that the strength of intramolecular nonbonded interactions between a divalent selenium and halogen atoms decreases in the order, Se···F&gt;Se···Cl≥Se···Br.
Development of Efficient Fluorosensors for the Transition Metal Ions by Tuning of Photoinduced Intramolecular Electron Transfer (PIET) Communication between the Components
Authors: Badugu Ramachandram 
Published: September 2002

Abstract
4-Methoxy-1,8-naphthalimide derivatives, 1 and 2, with improved PIET interaction, show significant fluorescence enhancement in the presence of transition metal ions.
Catalytic Activity of Multiwalled Carbon Nanotubes for the Oxidation of Nitric Oxide
Authors: Zhao Guang-Chao , Wu Fang-Hui , Wei Xian-Wen 
Published: September 2002

Abstract
The acid-treated Multiwalled Carbon Nanotubes (MWNTs) was dropped on the surface of glassy carbon electrode to form a modified electrode. The MWNTs showed the strong catalytic activity for the electrochemical oxidation of nitric oxide (NO) and the catalytic currents were proportional to the NO concentrations in submicromolar range.
Halogenolactamization of 2-(3-Butenyl)-1,3-oxazolines to Bifunctional γ- and δ-Lactams
Authors: Terao Keiji , Takechi Yumiko , Kunishima Munetaka , Tani Shohei , Ito Akiko , Yamasaki Chisa , Fukuzawa Shin-ichi 
Published: September 2002

Abstract
Under new conditions described herein, halogenolactamization of 2-(3-butenyl)-1,3-oxazolines (1) proves to be a successful approach for producing 1,5-bis(halogenoalkyl)-γ-lactams (3). A variety of halogens can be introduced by using reagents such as I2, I2/CuCl2, I2/CuBr2, and Br2 under dry conditions.
Sub-Microstructures Formed by Means of Reactive Ion Etching in Multilayers of Two-Dimensional Fine-Particle Arrays
Authors: Matsushita Sachiko I , Yagi Yoshie , Fujishima Akira 
Published: September 2002

Abstract
Highly attractive periodic sub-microstructures were formed in multilayers of two-dimensional fine-particle arrays by means of an oxygen-plasma etching technique. The enhancement of anisotropic etching in multilayers produced these attractive structures, since polystyrene particles (1 μm diameter) in the top layer had worked as protective sidewalls at high power (over 100 W) and low pressure (20 mPa).
Optical Absorption Properties of Three-Dimensional Au Nanoparticle Crystals
Authors: Sato Seiichi , Yao Hiroshi , Kimura Keisaku 
Published: September 2002

Abstract
Optical absorption properties of Au nanoparticle crystals are studied in the near infrared-to-near ultraviolet region. Although sparsely deposited Au nanoparticles show a small absorption peak at 2.4 eV, the Au nanoparticle crystals show a significantly stronger peak at 1.9 eV. Altering the temperature from room temperature to 77 K brings about very little difference in the intensity and width of the absorption peak. A qualitative model of the electronic polarizability is introduced to explain the observed peak shift as a result of assembling the nanoparticles into the 3D lattices.
Formation of Nanoparticle Arrays at the Interlayer of Aqueous Phosphate Bilayers
Authors: Yonezawa Tetsu , Onoue Shin-ya , Kimizuka Nobuo 
Published: September 2002

Abstract
Nanoparticle arrays were obtained by simply mixing anionic bilayer membranes and cationic, quaternary ammonium-stabilized gold nanoparticles under ultrasonication. The particles were immobilized densely into the hydrophilic interlayers of the dispersed lamellar structures and formed quasi one-dimensional structure.
Molecular Reactor for Solution Chemistry
Authors: Kaneko Masao , Mochizuki Nichiomi , Suzuki Kazuhisa , Shiroishi Hidenobu , Ishikawa Kazunori 
Published: September 2002

Abstract
It was for the first time demonstrated that in a tight and stable solid made of polysaccharides such as carrageenan and agarose containing water, electrochemical and photochemical reactions can take place the same as in pure water.
Convenient Synthesis of Zeolite Beta in Basic Media without Alkali Metal Cations
Authors: Guo Wanping , Li Quanzhi 
Published: September 2002

Abstract
A convenient approach has been developed to synthesize zeolite Beta with SiO2/Al2O3 ratios from 14.2 to infinity using tetraethylammonium hydroxide as the structure-directing agent (SDA) in absence of alkali metal cations.
Gas Permeation Properties of Flexible Pyrolytic Membranes from Sulfonated Polyimides
Authors: Zhou Weiliang , Watari Tatsuya , Kita Hidetoshi , Okamoto Ken-ichi 
Published: September 2002

Abstract
Polyimides were prepared from dianhydride with planar structure and Cardo-type or bulky-group-containing [-C(CF3)2-] diamines. Dense and flexibile flat membranes produced by the pyrolysis at relatively low temperature displayed high separation performance for C3H6/C3H8 and CO2/N2 gas pairs.
Liquid Crystal Properties of 4-Alkoxy-3-nitrobenzoic Acids
Authors: Tasaka Takeyasu , Okamoto Hiroaki , Morita Yuki , Kasatani Kazuo , Takenaka Shunsuke 
Published: September 2002

Abstract
For the homologous series of 4-alkoxy-3-nitrobenzoic acids the nonyloxy and the higher members exhibit a smectic A phase, where the layer spacings are 1.5–1.6 times of the fully extended molecular lengths.
Solvothermal Synthesis of Complex Fluorides KCoF3 and KNiF3
Authors: Hua Ruinian , Jia Zhihong , Xie Demin , Shi Chunshan 
Published: September 2002

Abstract
Complex fluorides KCoF3 and KNiF3 with perovskite structures were solvothermally synthesized at 120–180 °C and characterized by means of X-ray powder diffraction, scanning electron microscopy, thermogravimetric analysis and infrared spectroscopy.
Determination of Hg22+ Ions Using the Specific Reaction with a Picolinic Acid N-Oxide Modified Electrode
Authors: Kong Young-Tae , Choi Gyeong-Hee , Won Mi-Sook , Shim Yoon-Bo 
Published: September 2002

Abstract
A modified carbon paste electrode that specifically reacts with Hg22+ ions in a Hg2+ and Hg22+ mixed solution has been constructed by incorporating picolinic acid N-oxide into graphite powders. After a preconcentration in a Hg22+ and Hg2+ ion solution (pH 2.0), this electrode shows a well-defined anodic stripping peak for only Hg22+ ion and a linear response between 3.0×10-8 M and 1.0×10-6 M of Hg22+ ion. The electrode has been successfully applied to the selective determination of trace Hg in the human urine sample.
Generation and Detection of a Dithia Dication Derived from 4,9-Diethyl- [1,4]dihydrodithiino[5,6-f]benzotrithiole 5-Oxide and Its Disproportionation
Authors: Kimura Takeshi , Ito Shinya , Sasaki Takashi , Niizuma Shigeya , Ogawa Satoshi , Sato Ryu , Kawai Yasushi 
Published: September 2002

Abstract
A dithia dication was generated from 4,9-diethyl[1,4]-dihydrodithiino[5,6-f]benzotrithiole 5-oxide on treatment with D2SO4. Hydrolysis of the dication gave 4,9-diethyl[1,4]dihydrodithiino[5,6-f]benzotrithiole 1-oxide and 2-oxide, suggesting that the positive charges, generated on the dithiin ring, transferred to the trithiole ring. A disproportionation of the dithia dication was observed in the solution.
Hydrothermal Synthesis and Structure of a Neutral Open-Framework Zincophosphate
Authors: Zhao Yongnan , Yao Youwei , Li Xiuhong , Chen Xiangming , Li Ming , Mai Zhenhong 
Published: September 2002

Abstract
A neutral open-framework zincophosphate has been hydrothermally synthesized; structure refinement shows that it is composed of Zn4O12 tetramers and infinite Zn–O–Zn chains that are linked by PO4 groups forming one-dimensional 16-membered ring channels along b direction.
Chemical Synthesis of Optically Active Polyaniline in the Presence of Dextran Sulfate as Molecular Template
Authors: Yuan Guo-Li , Kuramoto Noriyuki 
Published: September 2002

Abstract
One preferred handed helical structure was induced into the polyaniline main chains by chemical polymerization of achiral aniline in the presence of dextran sulfate as a molecular template, and this affords a novel chemical route for synthesis of chiral conducting polymers.
Methanol Mediated Extraction of Phenolic Compounds from Wood Tar
Authors: Minowa Tomoaki , Sato Shinya , Matsumura Akimitsu , Inoue Seiichi , Hanaoka Toshiaki , Saito Ikuo 
Published: September 2002

Abstract
The methanol-mediated extraction was applied to wood carbonization tar. Phenolic compounds could be extracted from the wood tar. This shows the possibility of the selective extraction of phenolic compounds, although wood tar consists of many kinds of oxygen-containing compounds such as alcohols, phenols, ketones, esters, ethers, aldehydes, carboxylic acids, furans, and so on. The extraction is expected as a new method for the utilization of wood tar.
Metal Ion-induced Chirality and Morphology Control of Self-assembling Organogels from L-Glutamic Acid-derived Lipids
Authors: Takafuji Makoto , Sakurai Toshihiko , Yamada Taisuke , Hashimoto Toshitaka , Kido Naoyuki , Sagawa Takashi , Hachisako Hiroshi , Ihara Hirotaka 
Published: September 2002

Abstract
L-Glutamic acid-derived lipid with an isoquinolinyl head group formed nanofibrous aggregates based on highly-ordered structures in organic media. CD spectra and TEM observations indicated that the aggregation morphology and the chirality can be controlled by complexation with metal ions.
Preparation of Pt Nanoparticles Assembled in Multilayer Films
Authors: Shen Yan , Liu Jianyun , Wu Aiguo , Jiang Junguang , Bi Lihua , Liu Baifeng , Li Zhuang , Dong Shaojun 
Published: September 2002

Abstract
PtCl62- anions were assembled on a glassy carbon electrode with [tetrakis(N-methylpyridyl)porphyrinato]cobalt cations through layer-by-layer method, then electrochemically reduced to yield zero valent Pt nanoparticles. Regular growth and surface morphology of the multilayer films were characterized by UV/vis, XPS and AFM.
Fabrication and Characterization of Ordered Oligoaniline Film
Authors: Chen Xu , Liu Shaoqin , Song Yonghai , Dong Shaojun 
Published: September 2002

Abstract
A highly organized phenyl-capped teraniline (PC-teraniline) film at the molecular level was fabricated on carbon surfaces by electrochemical reduction of diazonium salts. Cyclic voltammetry (CV), scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS) were employed for the characterization of the film.
Effect of Cyclen on the Prolongation of M Intermediate Lifetime in the D96N Mutant of Bacteriorhodopsin
Authors: Liang Bing , Li Baofang , Zhang Jianping , Jiang Long 
Published: September 2002

Abstract
A new kind of chemical additive—cyclen (1,4,7,10-tetra-azacyclododecane) was used in BRD96N-PVA films in an attempt to obtain longer M state lifetime. At the highest cyclen concentration of 1:250, the lifetime of M state could be prolonged to 936 s. Comparing the lifetimes of the M state in BRD96N suspension and BRD96N-PVA film with the same cyclen content, it is the strong complexing properties of cyclen towards H+ that plays the most important role in this prolongation.
Highly α-Selective Glycosylation with Glycopyranosyl Fluorides Having Diethylthiocarbamoyl Group
Authors: Mukaiyama Teruaki , Suenaga Masahiro , Chiba Hiroyuki , Jona Hideki 
Published: September 2002

Abstract
Highly α-selective glycosylation of various glycosyl acceptors with glucopyranosyl fluoride having diethylthiocarbamoyl group at 6-position or galactopyranosyl fluoride having the same group at 4-position proceeded smoothly in the presence of a catalytic amount of protic acid to afford the corresponding disaccharides in high yields.
Crystal Growth of Na5[B2P3O13]
Authors: Li Zhihua , Wu Yicheng , Fu Peizhen , Pan Shilie , Wang Guofu , Chen Chuangtian 
Published: September 2002

Abstract
Large crystals of Na5[B2P3O13] with dimensions of 22×24×17 mm3 and 35×15×5 mm3 have been grown by the Kyropouls and Czochralski methods respectively for the first time. Parameters of crystal growth including the seed direction, cooling rate and rotation rate were investigated. The measured transmittance spectrum from 180 nm to 2800 nm indicates that the absorption edge lies at 186 nm. Furthermore, Na5[B2P3O13] crystal exhibits an optical second harmonic generation effect about the same as that of KDP(KH2PO4).
Formation and Detection of Large Neutral Clusters from Liquid Beam Surface by IR Laser Irradiation
Authors: Kohno Jun-ya , Mafuné Fumitaka , Kondow Tamotsu 
Published: September 2002

Abstract
A continuous liquid flow of water in a vacuum (a liquid beam) was irradiated with an IR laser at 2.96 μm which is resonant to a vibration mode of liquid water related to the OH stretching vibration of H2O. Large neutral water clusters, (H2O)n, were detected directly by a Daly-type detector without ionization. The velocity distribution determined from the flight-time distribution was found to be composed of fast and slow components, which are attributed to the water clusters ejected from the outermost region of the liquid surface and from the inside of the liquid, respectively.
Phase-Compositional and Morphological Control of Titania Nanoparticles via Low Temperature Dissolution-Reprecipitation Process in Liquid Media
Authors: Yin Shu , Hasegawa Hitoshi , Sato Tsugio 
Published: September 2002

Abstract
Rutile or anatase nanocrystals were prepared by a “low temperature dissolution-reprecipitation process” (LTDRP) in HCl or H2SO4 solutions around room temperature. The reprecipitation temperature and organic solvent addition in the solution system greatly affected the phase composition of the final powders. The phase compositional and morphological control of the final powders might be realized by applying a washing operation followed by a hydrothermal treatment in liquid media.
Reducing Surfactants–Silica Interactions for High-Coverage Silane-Modification of MCM-41 and MCM-48 Silicas
Authors: Lin Hong-Ping , Shih Pei-Chun , Liu Yi-Hsin , Mou Chung-Yuan 
Published: September 2002

Abstract
Reducing surfactants-silica interactions in the acid solution provides a novel and efficient strategy for obtaining high-coverage silanes grafted MCM-41 or MCM-48 mesoporous materials and a simultaneous recovery of the surfactants under a mild modification condition.
Preparation of Heteronuclear Bi1-xLax[Fe(CN)6]·n(H2O) Complexes and their Thermal Decomposition
Authors: Aono Hiromichi , Nakano Satoshi , Kondo Nobuyuki , Katagishi Haruo , Sakamoto Masatomi , Asato Eiji , Sadaoka Yoshihiko 
Published: September 2002

Abstract
The heteronuclear Bi1-xLax[Fe(CN)6]·nH2O complexes were synthesized and their crystal structures were investigated by XRD and TGA. The crystal phase was hexagonal (n=5) for x=1.0, and orthorhombic (n=4) for x=0–0.7 and their mixture (x=0.8 and 0.9). The lattice constants for the complexes linearly increased with an increase in the x value. The single phase of the trimetallic perovskite-type Bi0.5La0.5FeO3 was obtained by its thermal decomposition at 500 °C.
Colorimetric Detection of Human Lung Carcinoma Cell by Enlarging Au-Nanoparticles in situ
Authors: Ma Zhanfang , Liang Rong , Jiang Wuling , Zhou Tianhong , Chen Zhihua , Duan Mingxing , Tang Jintian , Sui Sen-fang 
Published: September 2002

Abstract
A new approach to the colorimetric detection of human lung carcinoma cell by enlarging Au-nanoparticles in situ has been reported. The results show that the sensitivity of detecting lung carcinoma cell is ca. 100 cell mL-1. By enlarging Au-nanoparticles immobilized on the nitrocellulose strips in situ with 0.01% HAuCl4 and 0.4 mM NH2OH, detection of lung carcinoma cell by naked eye is available. It will be of great significance in rapid and early clinical diagnosis.
Thermal Cycloreversion Reaction of a Photochromic Dithienylperfluorocyclopentene with tert-Butoxy Substituents at the Reactive Carbons
Authors: Morimitsu Kentaro , Shibata Katsunori , Kobatake Seiya , Irie Masahiro 
Published: September 2002

Abstract
tert-Butoxy groups were introduced at 2 and 2′-positions of the thiophene rings of a dithienylperfluorocyclopentene to prepare a photochromic compound with a thermal cycloreversion reactivity and a low photocycloreversion quantum yield. The cycloreversion quantum yield was similar to the isopropyl-substituted derivative and the half-life time of the colored isomer at 100 °C was 8 s.
Recovery of Stacking Height of Mesophase Pitch Fiber by Solid-Phase Annealing
Authors: Yang Hojung , Yoon Seong-Ho , Korai Yozo , Mochida Isao , Katou Osamu 
Published: September 2002

Abstract
The solid-phase annealing at temperatures higher than glass transition temperature (Tg) was found effective to recover or further improve the stacking of naphthalene and methylnaphthalene mesophase pitch fibers, maintaining the morphology of their fiber form. Thermal behaviors of mesophase pitches were examined to describe thermal changes of molecular stacking in its solid state and to clarify their significance on their nanoscopic structure.
A One-dimensional Nickel(III) Chain Complex Showing Ferromagnetic Ordering: Crystal Structure and Magnetic Property
Authors: Xie Jingli , Ren Xiaoming , Gao Song , Meng Qingjin 
Published: September 2002

Abstract
A ferromagnetic complex [BrFBzPy][Ni(mnt)2], where [BrFBzPy]+=1-(4′-bromo-2′-fluorobenzyl)pyridinium and mnt2-=maleonitriledithiolate, has been prepared. The [Ni(mnt)2]- anions and [BrFBzPy]+ cations form a well-separated stacking column and [Ni(mnt)2]- anions are uniformly spaced to give a one-dimensional (1-D) chain structure. Its magnetization studies shown it ferromagnetically ordered around 2 K.
Evidence for Transmetalation of Zirconacyclopentadiene to Cobalt Complex
Authors: Wang Hui , Tsai Fu-Yu , Nakajima Kiyohiko , Takahashi Tamotsu 
Published: September 2002

Abstract
Transmetalation reaction of zirconacyclopentadienes with cobalt(III) complex, CpCo(PPh3)I2, proceeded to afford (cyclobutadiene)cobalt(I) complexes, CpCo(C4R4). The structure of one of the cobalt complexes was verified by X-ray structure analysis.
Synthesis and Physical Property of a Novel Diarylethene Derivative Having a Chryso[b]thiophene Ring
Authors: Yamaguchi Tadatsugu , Kashiyama Hideki , Nakazumi Hiroyuki , Yamada Taro , Irie Masahiro 
Published: September 2002

Abstract
A novel type diarylethene derivative having a chryso[b]thiophenes ring has been synthesized and its photochromic reaction has been studied in ethyl acetate.
Electronic Structure of Group III Elements Doped into ZnO by Using Molecular Orbital Calculation
Authors: Nonaka Moriyasu , Matsushima Shigenori , Mizuno Masataka , Kobayashi Kenkichiro 
Published: September 2002

Abstract
The electronic structures of ZnO doped with group III elements (B, Al, Ga and In) are calculated by using the discrete variational Xα method of clusters. For ZnO doped with group III elements, new states originating from group III elements appear in the band gap. The depth energy of impurity-related states is the shallowest for Al and is the deepest for B.
Selective Nitrous Oxide Oxidation for C-H Oxidation and Aromatization of 9,10-Dihydroanthracene Derivatives
Authors: Hashimoto Kentaro , Tanaka Hirotaka , Ikeno Taketo , Yamada Tohru 
Published: September 2002

Abstract
During the nitrous oxide oxidation of 9,10-dihydroanthracene derivatives catalyzed by the ruthenium-porphyrin complexes, anthraquinones were selectively afforded by the C-H oxidation of the benzylic carbon under the appropriate reaction conditions, whereas anthracenes as a result of oxidative aromatization were selectively obtained in the presence of sulfuric acid.
Preparation of Highly Ordered Well-defined Single Crystal Cubic Mesoporous Silica Templated by Gemini Surfactant
Authors: Zhang Zhendong , Tian Bozhi , Shen Shaodian , Fan Jie , Tu Bo , Kong Qingyi , Xiao Fengshou , Qiu Shilun , Zhao Dongyuan 
Published: September 2002

Abstract
Highly ordered well-defined single crystal cubic mesoporous silica SBA-1 has been synthesized under static acidic conditions at room temperature by using gemini surfactant as a structure-directing agent.
Capture of Chromate and Arsenate by Amino Groups in Functionalised SBA-1
Authors: Yoshitake Hideaki , Yokoi Toshiyuki , Tatsumi Takashi 
Published: September 2002

Abstract
Mono-, di-, and triamino ligands fixed on SBA-1 mesoporous silica capture chromate and arsenate effectively in a fashion where the saturation stoichiometries (Cr/N and As/N) depend on the type of ligand. Extraordinary adsorption capacities were achieved: 211 and 263 mg/g-adsorbent for chromate and arsenate, respectively.