Synthesis of ultra-small cysteine-capped gold nanoparticles by pH switching of the Au(I)-cysteine polymer

被引：17

作者：

Cappellari, Paula S. ^{[1
]}

Buceta, David ^{[2
]}

Morales, Gustavo M. ^{[1
]}

Barbero, Cesar A. ^{[1
]}

Moreno, M. Sergio ^{[3
]}

Giovanetti, Lisandro J. ^{[4
]}

Ramallo-Lopez, Jose Martin ^{[4
]}

Requejo, Felix G. ^{[4
]}

Craievich, Aldo F. ^{[5
]}

Planes, Gabriel A. ^{[1
]}

机构：

[1] Univ Nacl Rio Cuarto, Rio Cuarto, Cordoba, Argentina

[2] Univ Santiago de Compostela, Lab Magnetismo & Nanotecnol, Inst Invest Tecnol, E-15782 Santiago De Compostela, Spain

[3] Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[4] Univ Nacl La Plata, Fac Ciencias Exactas, INIFTA, CCT La Plata CONICET, RA-1900 La Plata, Buenos Aires, Argentina

[5] Univ Sao Paulo, Inst Phys, BR-05508900 Sao Paulo, Brazil

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2015年 / 441卷

关键词：

Gold nanoparticles; Cysteine; Au-cysteine polymer; X-RAY-ABSORPTION; COORDINATION POLYMERS; CLUSTERS; SPECTRA; SIZE; NANOCLUSTERS; NANOCRYSTALS; SPECTROSCOPY; COMPLEXES; MECHANISM;

D O I：

10.1016/j.jcis.2014.11.016

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：

We report a synthetic approach for the production of ultra-small (0.6 nm) gold nanoparticles soluble in water with a precise control of the nanoparticle size. Our synthetic approach utilizes a pH-depending Au-cysteine polymer as a quencher for the AuNPs grown. The method extends the synthetic capabilities of nanoparticles with sizes down to 1 nm. In addition to the strict pH control, the existence of free -SH groups present in the mixture of reaction has been observed as a key requirement for the synthesis of small nanoparticles in mild conditions. UV-Vis, SAXS, XANES, EXAFS and HR-TEM, has been used to determinate the particle size, characterization of the gold precursor and gold-cysteine interaction. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：17 / 24

页数：8

共 34 条

[1] Optical absorption spectra of nanocrystal gold molecules [J].

Alvarez, MM ;

Khoury, JT ;

Schaaff, TG ;

Shafigullin, MN ;

Vezmar, I ;

Whetten, RL .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (19) :3706-3712

[2] Hole counts from X-ray absorption spectra [J].

Ankudinov, AL ;

Nesvizhskii, AI ;

Rehr, JJ .

JOURNAL OF SYNCHROTRON RADIATION, 2001, 8 (02) :92-95

[3] Gold nanoparticle size controlled by polymeric Au(I) thiolate precursor size [J].

Brinas, Raymond P. ;

Hu, Minghui ;

Qian, Luping ;

Lymar, Elena S. ;

Hainfeld, James F. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (03) :975-982

[4] BOND-VALENCE PARAMETERS OBTAINED FROM A SYSTEMATIC ANALYSIS OF THE INORGANIC CRYSTAL-STRUCTURE DATABASE [J].

BROWN, ID ;

ALTERMATT, D .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1985, 41 (AUG) :244-247

[5] Synthesis and Characterization of Gold@Gold(I) - Thiomalate Core@Shell Nanoparticles [J].

Corthey, Gaston ;

Giovanetti, Lisandro J. ;

Ramallo-Lopez, Jose M. ;

Zelaya, Eugenia ;

Rubert, Aldo A. ;

Benitez, Guillermo A. ;

Requejo, Felix G. ;

Fonticelli, Mariano H. ;

Salvarezza, Roberto C. .

ACS NANO, 2010, 4 (06) :3413-3421

[6] Gold nanoparticles: Assembly, supramolecular chemistry, quantum-size-related properties, and applications toward biology, catalysis, and nanotechnology [J].

Daniel, MC ;

Astruc, D .

CHEMICAL REVIEWS, 2004, 104 (01) :293-346

[7] Etching colloidal gold nanocrystals with hyperbranched and multivalent polymers: A new route to fluorescent and water-soluble atomic clusters [J].

Duan, Hongwei ;

Nie, Shuming .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (09) :2412-+

[8] Chiral N-isobutyryl-cysteine protected gold nanoparticles:: Preparation, size selection, and optical activity in the UV-vis and infrared [J].

Gautier, Cyrille ;

Buergi, Thomas .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (34) :11079-11087

[9]

Glatter Otto, 1982, SMALL ANGLE XRAY SCA

[10] Understanding thiol-induced etching of luminescent gold nanoclusters [J].

Ke, Chen-Yi ;

Chen, Tzu-Heng ;

Lu, Lin-Chen ;

Tseng, Wei-Lung .

RSC ADVANCES, 2014, 4 (50) :26050-26056

← 1 2 3 4 →