We propose a novel template-assisted strategy to prepare nanometer-sized manganese oxide (nano-MnO2) by self-assembly of some MnO2 platelets and demonstrate its application as a new class of biosensing platform for probing DNA hybridization and aptamer-target interaction in a homogeneous solution.
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Template-Free Synthesis of Mesoporous β-MnO Nanoparticles: Structure, Formation Mechanism, and Catalytic Properties.
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Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama, Kanagawa 226-8503, Japan.
Mesoporous β-MnO nanoparticles were synthesized by a template-free low-temperature crystallization of Mn precursors (low-crystallinity layer-type Mn oxide, -distorted H-birnessite) produced by the reaction of MnO and Mn. The Mn starting materials, pH of the reaction solution, and calcination temperatures significantly affect the crystal structure, surface area, porous structure, and morphology of the manganese oxides formed. The pH conditions during the precipitation of Mn precursors are important for controlling the morphology and porous structure of β-MnO.
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Department of Public Health, University of Szeged Faculty of Medicine, 6720, Szeged, Dóm tér 10., Hungary.
Incomplete information on toxicological differences of micro- and nanometer-sized particles raised concerns about the effects of the latter on health and environment. Besides chemical composition, size and surface-to-volume ratio of nanoparticles (NPs) can affect toxicity. To investigate size-dependent toxicity differences, we used particles made of dioxide of the neurotoxic heavy metal manganese (Mn), typically found in inhaled metal fumes, in three size ranges (size A, 9.
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State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Institute of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha 410082, China.
We propose a novel template-assisted strategy to prepare nanometer-sized manganese oxide (nano-MnO2) by self-assembly of some MnO2 platelets and demonstrate its application as a new class of biosensing platform for probing DNA hybridization and aptamer-target interaction in a homogeneous solution.
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School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715 (China), Fax: (+86) 23-68252361; Beijing National Laboratory for Molecular Sciences, Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Beijing 100190 (China).
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Division of Cardiology and C-TRAIN, Washington University School of Medicine, St. Louis, MO 63108 USA.
Paramagnetic and superparamagnetic metals are used as contrast materials for magnetic resonance (MR) based techniques. Lanthanide metal gadolinium (Gd) has been the most widely explored, predominant paramagnetic contrast agent until the discovery and association of the metal with nephrogenic systemic fibrosis (NSF), a rare but serious side effects in patients with renal or kidney problems. Manganese was one of the earliest reported examples of paramagnetic contrast material for MRI because of its efficient positive contrast enhancement.
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