Silver Nanoplates: From Biological to Biomimetic Synthesis Export

@article{citeulike:6071698, abstract = {This paper describes the synthesis of single-crystalline Ag nanoplates using the extract of unicellular green alga Chlorella vulgaris at room temperature. Proteins in the extract were involved in the biological synthesis, providing the dual function of Ag ion reduction and shape-controlled synthesis of nanosilver. Hydroxyl groups in Tyr residues and carboxyl groups in Asp and/or Glu residues were further identified as the most active functional groups for Ag ion reduction and for directing the anisotropic growth of Ag nanoplates, respectively. The kinetics of Ag ion reduction in biological systems was discussed and probed by using custom-designed peptides. The results showed the Tyr content (the reduction source) and the content of Ag complexers (the reaction inhibitors, e.g., His and Cys) in the protein molecules as important factors affecting the reduction kinetics. The comprehensive system identification effort has led to the design of a simple bifunctional tripeptide (DDY-OMe) with one Tyr residue as the reduction source and two carboxyl groups in the Asp residues as shape-directors, which could produce small Ag nanoplates with low polydispersivity in good yield (>55\%). The roles of the carboxyl groups in the formation of Ag nanoplates were also discussed.}, author = {Xie, Jianping and Lee, Jim Y. and Wang, Daniel I. C. and Ting, Yen P.}, citeulike-article-id = {6071698}, citeulike-linkout-0 = {http://dx.doi.org/10.1021/nn7000883}, citeulike-linkout-1 = {http://pubs.acs.org/doi/abs/10.1021/nn7000883}, day = {1}, doi = {10.1021/nn7000883}, journal = {ACS Nano}, keywords = {metallization-ag, silver-binding-peptide}, month = {December}, number = {5}, pages = {429--439}, posted-at = {2009-11-04 22:33:24}, priority = {2}, title = {Silver Nanoplates: From Biological to Biomimetic Synthesis}, url = {http://dx.doi.org/10.1021/nn7000883}, volume = {1}, year = {2007} }

TY - JOUR ID - citeulike:6071698 L3 - citeulike-article-id:6071698 N2 - This paper describes the synthesis of single-crystalline Ag nanoplates using the extract of unicellular green alga Chlorella vulgaris at room temperature. Proteins in the extract were involved in the biological synthesis, providing the dual function of Ag ion reduction and shape-controlled synthesis of nanosilver. Hydroxyl groups in Tyr residues and carboxyl groups in Asp and/or Glu residues were further identified as the most active functional groups for Ag ion reduction and for directing the anisotropic growth of Ag nanoplates, respectively. The kinetics of Ag ion reduction in biological systems was discussed and probed by using custom-designed peptides. The results showed the Tyr content (the reduction source) and the content of Ag complexers (the reaction inhibitors, e.g., His and Cys) in the protein molecules as important factors affecting the reduction kinetics. The comprehensive system identification effort has led to the design of a simple bifunctional tripeptide (DDY-OMe) with one Tyr residue as the reduction source and two carboxyl groups in the Asp residues as shape-directors, which could produce small Ag nanoplates with low polydispersivity in good yield (>55%). The roles of the carboxyl groups in the formation of Ag nanoplates were also discussed. IS - 5 JF - ACS Nano EP - 439 TI - Silver Nanoplates: From Biological to Biomimetic Synthesis VL - 1 SP - 429 KW - metallization-ag KW - silver-binding-peptide AU - Xie, Jianping AU - Lee, Jim AU - Wang, Daniel AU - Ting, Yen PY - 2007/12/01/ UR - http://dx.doi.org/10.1021/nn7000883 ER -