Facile colorimetric detection of 6-benzylaminopurine based on p-aminobenzenethiol functionalized silver nanoparticles

摘要: A simple colorimetric assay has been developed to detect 6-benzylaminopurine (6-BA) in a complex environment by using the novel probe p-aminobenzenethiol functionalized silver nanoparticles (ABT-AgNPs). When ABT-AgNPs bind with 6-BA, huge conjugate network can form based on intense electrostatic effects, hydrogen bonding and π–π stacking interactions, resulting visible colour change from faint yellow reddish orange. The interactions between 6-BA ABT also were validated density functional theory (DFT) approach. influence of experimental conditions analytical performance was investigated systematically. Under optimal conditions, absorbance ratio (A510 nm/A397 nm) is linearly related logarithm concentration 1 μM 20 μM, detection limit 0.1 μM. Furthermore, no obvious interference observed common inorganic ions other pesticides. successfully determined samples complicated matrices. recoveries obtained water vegetable range ∼81.3–101.2%.