Zinc complex, synthesis thereof and method for recognizing Fe < 3 + > ions in fluorescence

Abstract

The invention discloses a zinc complex, synthesis thereof and a method for recognizing Fe < 3 + > ions in fluorescence. The method comprises the following steps: S1, synthesis of a complex [Zn (3-bpam) (6-HNA) 2]; and S2, the recognition performance of the complex [Zn (3-bpam) (6-HNA) 2] on cations. Compared with traditional detection methods such as atomic absorption spectrometry, inductively coupled plasma and electrochemical methods, the obtained chemical sensor has the advantages of being high in sensitivity, convenient to operate, short in response time, capable of achieving real-time monitoring, low in cost and the like, and the obtained chemical sensor is based on the Fe < 3 + > ion fluorescence enhancement principle. Therefore, the problem that a detection result is distorted due to inaccurate light-emitting signals or wrong response to sensing signals of a traditional fluorescence quenching sensor is solved, Fe < 3 + > ions are easier to recognize, and an accurate detection result is obtained.

Description

technical field [0001] The invention relates to the technical field of chemical synthesis, in particular to a zinc complex and its synthesis and recognition of Fe in fluorescence. 3+ ionic method. Background technique [0002] Metal-organic complexes, due to their rich structures and excellent performance in luminescent recognition, gas storage and separation, catalysis, molecular sensing, guest molecular encapsulation, and optoelectronics, have attracted extensive attention in many fields. . Metal-organic complexes with luminescent properties have also been widely developed and applied as chemical sensors for the detection of metal ions, small organic molecules, explosives, toxic anions, pH and temperature. Because these target analytes have an important impact on industrial chemical synthesis, environmental evaluation, and people's production, life, and life maintenance. [0003] Iron is one of the building blocks of the most biologically relevant d-metals found in huma...

AI Technical Summary

Problems solved by technology

[0004] Due to Fe 3+ The paramagnetism and strong visible absorbance of the ion, the currently reported Fe 3+ Most luminescence sensors use the mechanism of fluorescence quenching effect, but non-analytical factors such as non-radiative energy transition and luminescence self-absorption will change the absolute luminescence intensity, thus making the luminescence signal inaccurate and causing the detection result to be distorted

However, fluorescence-enhanced detection methods, which can turn relatively dark materials into luminescent ones, can avoid false responses to sensing signals and make Fe 3+ Ions are easier to identify and get accurate detection results. Therefore, the development of chemical sensors based on fluorescence enhancement is beneficial to Fe 3+ Efficient detection of ions is a great necessity and a great challenge

Images