Ultrasound Irradiation Assisted Synthesis of Luminescent Nano Amide-Functionalized Metal-Organic Frameworks; Application Toward Phenol Derivatives Sensing.

Xiao-Wei Yan,Ali Morsali,Kuan-Guan Liu,Maniya Gharib,Su-Juan Wang,Leili Esrafili

doi:10.3389/fchem.2022.855886

Xiao-Wei Yan, Ali Morsali + Show 4 more

Open Access

https://doi.org/10.3389/fchem.2022.855886

Copy DOI

Abstract

Two nano amide-functionalized metal-organic frameworks (MOFs) with molecular formula [Co(oba) (bpta)]·(DMF)2 TMU-50 and [Co2(oba)2 (bpfn)]·(DMF)2.5 TMU-51 obtained under ultrasonic method without any surfactants. The only difference between the two selected amide functionalized pillar ligands, N,N′-bis(4-pyridinyl)-terephthalamide (bpta), and N,N′-bis-(4-pyridylformamide)-1,5-naphthalenediamine (bpfn), is related to the naphthyl group, which led to the different luminescence properties of the nano frameworks. In this study, the special ability of the luminescent nano MOFs were investigated to sensitize nitroaromatic compounds. Due to its unique and porous framework, Nano TMU-50 shows a good sensitivity towards nitro phenol by strong fluorescence emission with a detection limit of 2 × 10–3 mM−1. Both nano MOF structures were characterized via many analyses such as powder X-ray diffraction, Field Emission Scanning Electron Microscopy (FE-SEM), elemental analysis, and FTIR spectroscopy. Moreover, the effect of a number of important parameters including initial reagent concentrations, power of ultrasound, time on morphology, and size of nano structures were examined. According to the fluorescence titration results, the activated nano-TMU-50 detected NP selectively with a quick response.

Highlights

The spread of pollutants and their harmful effects on the lives of living organisms are some of the most important environmental issues of recent years
Due to X-ray data, the crystal system of the compound TMU-50 is monoclinic with the P21/n space group
Two nano plate metal-organic frameworks (MOFs) including π-conjugated amide functionalized ligands and cobalt metal ion having fluorescence properties were synthesized by ultrasonic method [Co(oba)]·(DMF)2 (TMU-50) and [Co2(oba)2]·(DMF)2.5 (TMU-51)

Summary

Introduction

The spread of pollutants and their harmful effects on the lives of living organisms are some of the most important environmental issues of recent years. We all know that some harmful materials are known as toxic compounds and can have a serious effect on human health and environmental pollution (Kumar et al, 2015). High-precision sensors are needed to detect pollutants, especially with the capability of detecting dangerous amounts of them for the health of living organisms. It should be possible to identify target molecules in the presence of other toxic molecules (Di Pietrantonio et al, 2012). The preparation of compounds with good potential for specific adsorption of pollutants is important in both environmental issues and analytical sciences (Huang et al, 2011).

Methods

Results

Conclusion