Synthesis of gold structures by gold-binding peptide governed by concentration of gold ion and peptide.
Although biological synthesis methods for the production of gold structures by microorganisms, plant extracts, proteins, and peptide have recently been introduced, there have been few reports pertaining to controlling their size and morphology. The gold ion and peptide concentrations affected on the size and uniformity of gold plates by a gold-binding peptide Midas-11. The higher concentration of gold ions produced a larger size of gold structures reached 125.5 μm, but an increased amount of Midas-11 produced a smaller size of gold platelets and increased the yield percentage of polygonal gold particles rather than platelets. The mechanisms governing factors controlling the production of gold structures were primarily related to nucleation and growth. These results indicate that the synthesis of gold architectures can be controlled by newly isolated and substituted peptides under different reaction conditions.
a Division of System and Material Industry , Korea Evaluation Institute of Industrial Technology , Daegu , Republic of Korea.
Jungok
J
Kim
b Groundwater Department , Korea Institute of Geoscience and Mineral Resources , Daejeon , Republic of Korea.
Dong-Hun
DH
Kim
c Department of Chemical and Environmental Engineering and Center for Nanoscale Science and Engineering , University of California at Riverside , Riverside , CA , USA.
Sylvia J
SJ
Lee
c Department of Chemical and Environmental Engineering and Center for Nanoscale Science and Engineering , University of California at Riverside , Riverside , CA , USA.
Youngwoo
Y
Rheem
c Department of Chemical and Environmental Engineering and Center for Nanoscale Science and Engineering , University of California at Riverside , Riverside , CA , USA.
Nosang V
NV
Myung
d School of Environmental Science and Engineering , Gwangju Institute of Science and Technology , Gwangju , Republic of Korea.
Hor-Gil
HG
Hur
D040761:Biomimetic Materials / Q000737:chemistry*; D002712:Chlorides / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D017612:Gold Compounds / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007477:Ions; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D010455:Peptides / Q000737:chemistry*; D011485:Protein Binding
D002712:Chlorides; D017612:Gold Compounds; D007477:Ions; D010455:Peptides; D006046:Gold; C024568:gold tetrachloride, acid
biomimetic; gold structures; peptide; phage-display