SYNTHESIS AND CHARACTERIZATION OF NOVEL 4-CYNANOPHENYLFUNCTIONALIZED N4,N4,N4′,N4′-TERAPHENYLBENZIDINE (TPB) AS HOLE TRANSPORTING MOLECULAR MATERIALS

Authors : Kamuran GORGUN

Pages : 1000-1007

Doi:10.18038/aubtda.332785

View : 13 | Download : 10

Publication Date : 2017-12-31

Article Type : Research Paper

Abstract :In this study, a new cyanophenyl-functionalized N4,N4,N4′,N4′-tetraphenylbenzidine insert ignore into journalissuearticles values(TPB); containing employable hole-transporting components has been synthesized with Pd-catalyzed Suzuki-Miyaura cross coupling reaction. N4,N4,N4′,N4′tetrakis-insert ignore into journalissuearticles values(4′-cynobiphenyl-4-yl);-biphenyl-4,4′-diamine insert ignore into journalissuearticles values(TPB-CN);   was well characterized by 1H NMR, 13C NMR and CHN elemental analysis. The compound TPB-CN exhibited good thermal stability and luminescence properties. Time Dependent Density Functional Theory insert ignore into journalissuearticles values(TDDFT); computation was carried out to investigate the structural parameters and to understand the photophysical properties of the novel TPB-CN compound. The experimental and theoretical calculations performed to calculate absorption maxima in DCM by UV-Vis and TD-B3LYP/6-31ginsert ignore into journalissuearticles values(d,p); were compared with each other. To identify crystal structure and to determine optical band gap of TPB-CN compound, its film form, which was coated on the glass substrate by spin coating, was used. The band gap of TPB-CN compound both in film and in solution was determined from the optical absorption measurements.
Keywords : N4N4N4′N4′ tetraphenylbenzidine TPB, Suzuki Miyaura cross coupling, Organic semiconductor, TDDFT