Solid-phase growth of nanostructures from amorphous peptide thin film: Effect of water activity and temperature

We report the solid-phase self-assembly of nanostructures from amorphous thin film of aromatic peptides. The thickness of amorphous peptide film could be precisely controlled down to similar to 50 nm. Aligned nanostructures were grown from the film either by changing water activity in the vapor phase or by applying high thermal energy. The growth of peptide nanorods on solid substrate occurred via a water-vapor-mediated self-assembly process. We found that the peptide nanostructures could be "reversibly" dissociated and reassembled depending on the chemical composition of the vapor phase. We also observed that the phase transition of aromatic peptide occurs at extremely high temperatures above 100 degrees C, and the thermal aging of amorphous film resulted in the formation of peptide nanorods. In this work, the formation of peptide nanostructures from amorphous thin film was investigated by multiple analytical tools such as electron and atomic force microscopies, vibrational and diffraction spectroscopies, and differential scanning calorimetry. To the best of our knowledge, this is the first report for the self-assembly of peptides into nanostructures starting from amorphous thin film.
Publisher
AMER CHEMICAL SOC
Issue Date
2008-07
Language
ENG
Keywords

CARBON NANOTUBES; DIPHENYLALANINE; DIPEPTIDES; NANOFIBERS; NANOWIRES

Citation

CHEMISTRY OF MATERIALS, v.20, no.13, pp.4284 - 4290

ISSN
0897-4756
DOI
10.1021/cm800015p
URI
http://hdl.handle.net/10203/5810
Appears in Collection
MS-Journal Papers(저널논문)
  • Hit : 391
  • Download : 30
  • Cited 0 times in thomson ci
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡClick to seewebofscience_button
⊙ Cited 36 items in WoSClick to see citing articles inrecords_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0