In situ depositing silver nanoclusters on silk fibroin fibers supports by a novel biotemplate redox technique at room temperature

被引:97
作者
Dong, Q [1 ]
Su, HL [1 ]
Zhang, D [1 ]
机构
[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200030, Peoples R China
关键词
D O I
10.1021/jp052826z
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Evolvement of bioinspired approaches for the construction of well-ordered nanostructures is a crucial intersection of branches of materials science and biotechnology. In this paper, floriated clusters of silver nanocrystallites, which consist of polycrystalline grains about 5 nm in diameter, have been successfully prepared on silk fibroin fibers (SFFs) through an in situ biotemplate redox approach at room temperature. The reductive amino acid tyrosine of SFFs mainly provided both reduction and location functions under alkaline conditions and could reduce Ag(I) ions to Ag(0). Finally, stable silver nanoclusters were generated on SFF substrates. The morphologies of silver nanoclusters were mostly attributed to the concentration of silver nitrate solution as well as special configurations and structures of silk fibroin macromolecules. A possible mechanism was explored intensively for tyrosine-residue-based silver nanocrystal formation.
引用
收藏
页码:17429 / 17434
页数:6
相关论文
共 45 条
[1]   Highly selective, electrically conductive monolayer of nanoparticles on live bacteria [J].
Berry, V ;
Rangaswamy, S ;
Saraf, RF .
NANO LETTERS, 2004, 4 (05) :939-942
[2]   Alfalfa sprouts: A natural source for the synthesis of silver nanoparticles [J].
Gardea-Torresdey, JL ;
Gomez, E ;
Peralta-Videa, JR ;
Parsons, JG ;
Troiani, H ;
Jose-Yacaman, M .
LANGMUIR, 2003, 19 (04) :1357-1361
[3]   Pepsin-gold colloid conjugates: Preparation, characterization, and enzymatic activity [J].
Gole, A ;
Dash, C ;
Ramakrishnan, V ;
Sainkar, SR ;
Mandale, AB ;
Rao, M ;
Sastry, M .
LANGMUIR, 2001, 17 (05) :1674-1679
[4]  
Hayat M., 1989, COLLOIDAL GOLD PRINC
[5]   Ultrathin single-crystalline silver nanowire arrays formed in an ambient solution phase [J].
Hong, BH ;
Bae, SC ;
Lee, CW ;
Jeong, S ;
Kim, KS .
SCIENCE, 2001, 294 (5541) :348-351
[6]   Mechanism of silk processing in insects and spiders [J].
Jin, HJ ;
Kaplan, DL .
NATURE, 2003, 424 (6952) :1057-1061
[7]   Photoinduced conversion of silver nanospheres to nanoprisms [J].
Jin, RC ;
Cao, YW ;
Mirkin, CA ;
Kelly, KL ;
Schatz, GC ;
Zheng, JG .
SCIENCE, 2001, 294 (5548) :1901-1903
[9]   Fabrication of hollow palladium spheres and their successful application to the recyclable heterogeneous catalyst for Suzuki coupling reactions [J].
Kim, SW ;
Kim, M ;
Lee, WY ;
Hyeon, T .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (26) :7642-7643
[10]   An approach to electrical studies of single nanocrystals [J].
Klein, DL ;
McEuen, PL ;
Katari, JEB ;
Roth, R ;
Alivisatos, AP .
APPLIED PHYSICS LETTERS, 1996, 68 (18) :2574-2576