Highly-sensitive hydrogen sensor of DNA-Pd nano hybrid materials

Mitsuo Umetsu, Yoshiharu Hatakeyama, Satoshi Ohara, Fumihiko Kawadai, Seiichi Takami, Takashi Naka, Tadafumi Adschiri

Research output: Contribution to conferencePaperpeer-review


Deoxyribonucleic acid (DNA) is one of the polymer templates most appropriate to build up defined inorganic materials. DNA has negative charge on phosphate groups, and the DNA conformation can be transformed to a globular conformation by increasing the concentration of cationic ion. In this study, we attempted to reduce palladium (Pd) on DNA structure at a relatively high concentration of Pd and succeeded in the formation of unique DNA-Pd nano hybrid structures by controlling reductive reaction. Pd can absorb hydrogen to be chemically changed to PdHx. The electric resistance and volume of the Pd materialsis are increased by the storage of hydrogen, which is considered to be available for hydrogen sensor. We would show the utilization of the DNA-Pd hybrid material for the highly-sensitive hydrogen sensor or hydrogen switch device.

Original languageEnglish
Number of pages2
Publication statusPublished - 2005 Dec 1
Event54th SPSJ Symposium on Macromolecules - Yamagata, Japan
Duration: 2005 Sep 202005 Sep 22


Other54th SPSJ Symposium on Macromolecules


  • DNA
  • Hydrogen sensor
  • Nano-materials
  • Palladium
  • Self-assembly

ASJC Scopus subject areas

  • Engineering(all)


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