Abstract:
:Gold nanoparticles are known to aggregate in the presence of proper multifunctional compounds. For those larger than 3 nm, the process can be followed with the naked eye because the surface plasmon absorption band of the particles shifts to longer wavelengths and the solution color changes from red to blue. To exploit this property, we have used amino acids and peptides as crosslinking agents in ethanol at low µM concentrations. In the case of amino acids, we report a straightforward protocol for their colorimetric identification. We also report that the presence of precise secondary structure and conformational constraints in oligopeptides, directly influence their crosslinking ability. A discussion on the nature of the interactions that induce these phenomena is also reported.
journal_name
Biopolymersjournal_title
Biopolymersauthors
Martínez Á,Scrimin Pdoi
10.1002/bip.23111subject
Has Abstractpub_date
2018-08-01 00:00:00pages
e23111issue
10eissn
0006-3525issn
1097-0282journal_volume
109pub_type
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