In Situ Synthesis of Gold Nanoparticles/Metal-Organic Gels Hybrids with Excellent Peroxidase-Like Activity for Sensitive Chemiluminescence Detection of Organophosphorus Pesticides.
Until now, despite much progress in the study of metal-organic gels (MOGs), the modification of transition-metal containing MOGs with noble metal nanoparticles (NPs) is far from fully developed. Herein, iron-based MOGs nanosheet hybrids with gold NPs (AuNPs) immobilization were first synthesized by a facile in situ grown strategy at ambient conditions. It is found that the as-prepared AuNPs/MOGs (Fe) hybrids exhibited enhanced mimicking peroxidase-like activity, making them endowed with outstanding performance in chemiluminescence (CL) field in the presence of H2O2. The remarkable CL enhancement by AuNPs/MOGs (Fe) hybrids was attributed to the modification of AuNPs on MOGs (Fe) nanosheets, which could synergistically accelerate the CL reaction by speeding up the generation of OH•, O2•-, and 1O2. Accordingly, a sensitive CL detection of organophosphorus pesticides was successfully achieved by the AuNPs/MOGs (Fe) hybrids CL enhancing system in the range of 5-800 nM with a detection limit of 1 nM. We envision that this highly active and novel enzyme mimetic catalyst can be applicable to other extended AuNPs/MOGs (Fe) hybrid-based CL systems for sensitive detection of various analytes.
['He|Li|L|', 'Jiang|Zhong Wei|ZW|', 'Li|Wei|W|', 'Li|Chun Mei|CM|http://orcid.org/0000-0002-3168-2900', 'Huang|Cheng Zhi|CZ|http://orcid.org/0000-0002-1260-5934', 'Li|Yuan Fang|YF|http://orcid.org/0000-0001-5710-4423']
D005782:Gels D006046:Gold D006861:Hydrogen Peroxide D008163:Luminescent Measurements D008165:Luminol D053768:Metal Nanoparticles D010575:Pesticides
chemiluminescence detection AuNPs/MOGs (Fe) hybrids catalysis luminol, organophosphorus pesticides