Controllable synthesis of thiol-capped CdTe nanoparticles for optical sensing of triethylenetetramine dihydrochloride.
Highly luminescent CdTe quantum dots (QDs) were synthesized through a co-precipitation route in aqueous salt solutions using different thiols as stabilizers. The synthetic procedure was simple, efficient, and stable. It could also allow controlling the emission wavelength by varying the experimental conditions such as reaction time and pH values. The strong luminescence of the QDs was observed under UV-excitation and emission colors could be adjusted. The interaction between CdTe QDs and triethylenetetramine dihydrochloride (TETA) which is a candidate treatment for diabetic cardiovascular complication was investigated by fluorescence spectroscopy. Based on the quenching effect on CdTe photoluminescence intensity by TETA, a simple assay system for analyzing the content of TETA in aqueous samples was developed. The linearity was maintained in the range of 0.2 μM to 1.2 μM (R2 = 0.994) with a limit of detection (LOD; S/N = 3) at 28 nM. The results showed that CdTe QDs capped with diverse thiols has a potential for the quantitative analysis of TETA in urine samples.
Bui The
BT
Huy
Avvaru Praveen
AP
Kumar
Min-Ho
MH
Seo
Jan-Di
JD
Kim
Yong-Ill
YI
Lee
D019187:Cadmium Compounds / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D036103:Nanotechnology / Q000379:methods*; D055620:Optical Phenomena; D045663:Quantum Dots / Q000737:chemistry*; D013438:Sulfhydryl Compounds / Q000737:chemistry*; D013501:Surface-Active Agents / Q000737:chemistry; D013691:Tellurium / Q000737:chemistry*; D013864:Thioglycolates / Q000737:chemistry; D014266:Trientine / Q000032:analysis*
D019187:Cadmium Compounds; D013438:Sulfhydryl Compounds; D013501:Surface-Active Agents; D013864:Thioglycolates; C017487:2-mercaptoacetate; D013691:Tellurium; D014266:Trientine; C028337:cadmium telluride