Material-binding peptide application--ZnO crystal structure control by means of a ZnO-binding peptide.
Recently, a zinc oxide (ZnO)-binding peptide (ZnOBP) has been identified and has been used to assist the synthesis of unique crystalline ZnO particles. We analyzed the influence of ZnOBP on the crystal growth of ZnO structures formed from zinc hydroxide. The addition of ZnOBP in the hydrothermal synthesis of ZnO suppressed [0001] crystal growth in the ZnO particles, indicating that the specificity of the material-binding peptide for specific inorganic crystal faces controlled the crystal growth. Furthermore, the dipeptides with a partial sequence of ZnO-binding "hot spot" in ZnOBP were used to synthesize ZnO particles, and we found that the presence of these dipeptides more strictly suppressed (0001) growth in ZnO crystals than did the complete ZnOBP sequence. These results demonstrate the applicability of dipeptides selected from material-binding peptides to control inorganic crystal growth.
Advanced Institute for Materials Research, WPI, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
Takanari
T
Togashi
Nozomi
N
Yokoo
Mitsuo
M
Umetsu
Satoshi
S
Ohara
Takashi
T
Naka
Seiichi
S
Takami
Hiroya
H
Abe
Izumi
I
Kumagai
Tadafumi
T
Adschiri
D003460:Crystallization; D006878:Hydroxides / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry; D010455:Peptides / Q000737:chemistry*; D011485:Protein Binding; D017967:Zinc Compounds / Q000737:chemistry; D015034:Zinc Oxide / Q000138:chemical synthesis*
D006878:Hydroxides; D010455:Peptides; D017967:Zinc Compounds; C052745:zinc hydroxide; D015034:Zinc Oxide