The Systhesis And Optical Properties Of Swivel Cruciform Compounds Based On Anthracene Center

The design and synthesis of new chemical and electronic structures of conjugated molecules is an eternal research topic for chemical workers,and further regulation and optimization of the composition and structure of molecules is the most basic and important means to expand and enhance the function of organic optoelectronic materials.Organic electroluminescence has attractive reality and potential applications in areas such as display and lighting.However,the current mainstream of commercially available electroluminescent devices is based on rare metal organic phosphorescent complexes such as iridium and platinum.It is of great theoretical and practical significance to study the research and development of new efficient conjugated organic electroluminescent materials,which has the shortage of resources,expensive price and chromaticity,which seriously limits its large-scale popularization and sustainable application.Anthracycline is a good blue light-emitting materials,and more and more studies on organic conjugated fluorescent molecules of anthracene light-emitting center are based on linear and cross-conjugated anthracene organic conjugated molecules.However,the linear and cross-conjugated structures still have a large ?-? effect on the conjugated groups and anthracycline centers,resulting in a clear red shift of solid-state emission,solid fluorescence quenching and poor solubility.And the swivel cruciform structure not only changes the traditional linear and cross-configuration,so that the twist body and anthracene ring exclusion to form a roundabout configuration,a strong twisted structure to increase the degree of molecular structure disorder,weakened the interaction of groups.under the condition that the theoretical mechanism of organic conjugated fluorescent materials is not perfect,the studies of interaction between the organic conjugated fluorophores structure and properties can improve the theoretical mechanism of organic conjugated fluorescent materials,which can provide important reference and theoretical guidance for the next step of scientific research workers engaged in organic conjugated fluorescent materials.In this paper,the donor groups are bonded at the 9 and 10 positions of the anthracene,and the conjugated groups,namely the dendrimers,are bonded at the 2 and 5 positions of the phenyl group.Due to the strong spatial exclusion of the ridges on both sides of the anthracene ring,it is contemplated that the structure is more favorable for the relative independence of the dendrites and the anthracene than in the 4-position of the phenyl group.Conventional styrene-based bonding of anthracene ring 9 and 10,however the free rotation of benzene ring C-C single bond is more conducive to material solubility,solution film,morphological stability.The weak ?-? interaction between the dendrimers and the benzene ring makes the compound behave better than the photoelectric properties of the dendrites.Therefore,we have synthesed 9,10-bis(2,5-dimethylbenzene)phenyl)anthracene APM,9,10-bis(2,5-phosphinophenyl)anthracene APPO,9,10-bis(2,5-di(tert-butylstyryl)phenyl)anthracene APTBP and 9,10-bis(2,5-bis(triphenylamino)phenyl)anthracene APTPA and explored the spatial conformation and basic optical properties of the cyclotron structure.APM and APPO show the phenomenon of red shift emission reduction and amorphous fluorescence enhancement.The single crystal structure shows that there are H and V conformation in the convoluted structure,and the twist angle is 90 ° and 100 °,respectively.The preliminary results of APTBP and APTPA showed good solubility,thermal stability and morphological stability,and the enhancement of amorphous fluorescence enhancement.