Electronic Structures of Protein Nanotubes

Self-Assembling Organic Nanotubes

“…The results of Takeda and co-workers suggest that intersubunit hydrogen bonding may delocalize electrons and holes toward the tube axis, so that band conduction might occur through the interring hydrogen bonds. [178] More recently, Takeda and coworkers have examined the role of intra-and inter-ring hydrogen bonds in determining the electronic structure of peptide nanotubes and found that the electronic band-edge states are strongly dependent on the inter-ring hydrogen bonds. [179] Employing calculations with gradient-corrected exchange-correlation potentials, Carloni et al have predicted a large gap in the low-energy electronic excitation spectrum, with both extended and localized states near the gap.…”

Organische Nanoröhren durch Selbstorganisation

“…[178] Weiterhin fanden Takeda et al bei der Untersuchung der Bedeutung von H-Brücken innerhalb und zwischen den Ringen für die elektronische Struktur der Peptid-Nanoröhren, dass die elektronischen Zustände an den Bandkanten stark von den H-Brücken zwischen den Ringen abhängen. Die Ergebnisse von Takeda et al legen nahe, dass die Bildung von H-Brücken zwischen den Untereinheiten zur Delokalisierung von Elektronen und Löchern in Richtung auf die Röhrenachse hin führen, sodass Leitfähigkeitsbänder entlang den H-Brücken zwischen den Ringen entstehen.…”

Synthesis and atomic force microscopy observations of the single-peptide nanotubes and their micro-order assemblies

“…[2][3][4] Their applications in nanoelectronics are also a focus of our group and several other scientists. [5][6][7][8] We theoretically investigated the electronic and molecular structures of the PNT's and forecast the wide-band-gap semiconducting nature. 9 The backbone conformation as well as the effect of the amino acid replacement was also investigated.…”