Sun, Jie published the artcileA dual probe for selective sensing of Zn (II) by fluorescent and Cu (II) by colorimetric methods in different systems based on 7,8-benzochromone-3-carbaldehyde -(fluorescein)hydrazone, Synthetic Route of 86-48-6, the publication is Journal of Photochemistry and Photobiology, A: Chemistry (2021), 113007, database is CAplus.
In this study, a novel fluorescent probe sensor, 7,8-benzochromone-3-carbaldehyde (fluorescein)hydrazone L, was designed and synthesized. Based on the photoinduced electron transfer (PET) process, L can detect Zn2+ in the solution of EtOH/H2O (9/1, V/V). The probe had high selectivity and sensitivity to Zn2+ with a lower detection limit of 3.4 x 10-7 M. Furthermore, the coordination ratio of L-Zn2+ was 1:1, which could be corroborated by Job′s plot. In addition, in the EtOH/ H2O (5/2, V/V) solution of the probe L, Cu2+ was added to produce a marked change in color from achromatous to yellow, indicating that the probe L could detect Cu2+ by colorimetry, which was detectable by the naked eye, simply and quickly. According to the Benesi-Hildebrand equation, the complexing constants values of L-Zn2+ and L-Cu2+ were 9.8 x 104 M2+ and 1.009 x 105 M2+, resp.
Journal of Photochemistry and Photobiology, A: Chemistry published new progress about 86-48-6. 86-48-6 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment,Natural product, name is 1-Hydroxy-2-naphthoic acid, and the molecular formula is C6H5F4NO3S, Synthetic Route of 86-48-6.
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