Construction Of A Novel Triazazepine Derivative And Its Fluorescence Properties In Solid State

In recent decades,the advantages of organic luminescent materials such as good softness,low energy consumption,and good ductility have attracted the attention of many researchers in the field of optoelectronic materials.Due to the existence of organic chromophore aggregationcaused quenching(ACQ)effect,the properties of the existing solid luminescent molecules cannot meet the requirements,so it is necessary to develop solid fluorescent molecules with prominent properties.A variety of strategies have been developed for the construction of molecules with solid fluorescence properties.In the construction of many molecules,nitrogen heterocyclic ring has attracted much attention due to its excellent performance.In this context,based on the review of a large number of prospective research results,a new type of triazepine with excellent solid fluorescence properties was developed,and the core factors affecting fluorescence emission were explored through the interdisciplinary studies in organic chemistry,crystallography,computational chemistry,and other disciplines.Triazepine and its derivatives are important branches of nitrogen-containing seven-membered ring,and its skeleton design and synthesis have been paid much attention.At the same time,due to its unique combination of rigidity and flexibility,it has great optoelectronic performance potential and can be widely used in the field of optoelectric materials.1.In this paper,a series of new triazepines were constructed by using 3,5-di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine and methyl ketone as raw materials,using iodine as the green catalyst.This method has the advantages of simple reaction operation,simple post-treatment,good atomic economy,including the aliphatic chain,aromatic ring,heterocyclic ring and polycyclic methyl ketone,which can carry on the high functional group adaptability of the reaction,and the control variables to explore the possible synthesis mechanism of the reaction.2.Most of these substances have good solid-state emission properties,such as large Stokes shift,long fluorescence life,adjustable emission wavelength within a certain range,good environmental stability,and can enter the stained cytoplasm of cells.The differences in fluorescence properties of different kinds of triazepine salts were explained by crystallography and theoretical calculation.All in all,the synthesis and properties of potential applications of triazepine molecules will promote the development of optoelectronic materials.