National Institute for Materials Science

4 ARTICLES PUBLISHED IN JoVE

Chemistry

Synthesis of a Water-soluble Metal–Organic Complex Array

Purnandhu Bose¹, Pradip K. Sukul¹, Omar M. Yaghi^2,3,4, Kentaro Tashiro¹

¹International Center for Materials Nanoarchitectonics, National Institute for Materials Science, ²Department of Chemistry, University of California–Berkeley, ³Materials Sciences Division, Lawrence Berkeley National Laboratory, ⁴Kavli Energy NanoSciences Institute at Berkeley, University of California–Berkeley

A potential general method for the synthesis of water-soluble multimetallic peptidic arrays containing a predetermined sequence of metal centers is presented.

Biochemistry

Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1

Yoshihide Tokunou¹, Kazuhito Hashimoto², Akihiro Okamoto²

¹Department of Applied Chemistry, University of Tokyo, ²Global Research Center for Environment and Energy based on Nanomaterials Science, National Institute for Materials Science

Here we present a protocol of whole-cell electrochemical experiments to study the contribution of proton transport to the rate of extracellular electron transport via the outer-membrane cytochromes complex in Shewanella oneidensis MR-1.

Environment

Self-standing Electrochemical Set-up to Enrich Anode-respiring Bacteria On-site

Akihiro Okamoto¹, Annette Rowe², Xiao Deng³, Kenneth H. Nealson²

¹International Center for Materials Nanoarchitectonics, National Institute for Materials Science, ²Department of Earth Sciences, University of Southern California, ³Department of Applied Chemistry, The University of Tokyo

On-site microbial enrichment or in situ cultivation techniques can facilitate the isolation of difficult-to-culture microbial taxa, especially from low-biomass or geochemically extreme environments. Here, we describe an electrochemical set-up without using an external power source to enrich microbial strains that are capable of extracellular electron transport (EET).

Chemistry

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Akira Yamaguchi^1,5, Toshihiro Takashima², Kazuhito Hashimoto^1,6, Ryuhei Nakamura^3,4

¹Department of Applied Chemistry, The University of Tokyo, ²Clean Energy Research Center, University of Yamanashi, ³Biofunctional Catalyst Research Team, RIKEN Center for Sustainable Resource Science, ⁴Earth-Life Science Institute (ELSI), Tokyo Institute of Technology, ⁵Department of Materials Science and Engineering, Tokyo Institute of Technology, ⁶National Institute for Materials Science

Here, we present a protocol to prepare charge transfer chromophores based on a polyoxometalate/polymer composite membrane.

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