Visual and light scattering spectrometric detections of melamine with polythymine-stabilized gold nanoparticles through specific triple hydrogen-bonding recognition.
Melamine can be sensitively detected in aqueous medium through its selective interaction with polythymine (polyT(n)) modified gold nanoparticles (AuNPs) by forming triple H-bonds, which results in aggregation of the polyT(n)-stabilized AuNPs, displaying variations of localized plasmon resonance features such as colour change from red to purple and enhanced localized surface plasmon resonance light scattering (LSPR-LS) signals.
Qi
Wen Jing
WJ
Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
Wu
Di
D
Ling
Jian
J
Huang
Cheng Zhi
CZ
D006046:Gold / Q000737:chemistry*; D006860:Hydrogen Bonding; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry*; D012542:Scattering, Radiation; D020349:Surface Plasmon Resonance / Q000379:methods*; D013941:Thymine / Q000737:chemistry*; D014227:Triazines / Q000032:analysis*
D014227:Triazines; D006046:Gold; C011907:melamine; D013941:Thymine