مقاله 2011 نمونه ترجمه از صفحه اول A simple and sensitive method for visual detection of heparin usingpositively-charged gold nanoparticles as colorimetric probesw Rui Cao and Baoxin Li*Received 22nd November 2010, Accepted 6th January 2011DOI: 10.1039/c0cc05094f The electrostatic interaction between the negatively-charged heparin and the positively-charged gold nanoparticles leads to aggregation of gold nanoparticles and a color change from red to blue in solution, thus providing a simple and visual approach to colorimetric detection of ...