Fluorene based molecules have wide range of application in organic light emitting diodes (OLEDs). In our work, two new materials were designed and synthesized: N1-(4-(diphenylamino)phenyl)-N4,N4-diphenyl-N1-(9,9-diphenyl-9H-fluoren-7-yl)benzene-1,4-diamine (FLU-DTPA) and N,N-bis(4-(9H-carbazol-9-yl)phenyl)-9,9-diphenyl-9H-fluoren-2-amine (FLU-DCAR). These newly synthesized materials were applied as hole transporting material in yellow phosphorescent OLEDs. The FLU-DCAR based yellow phosphorescent device showed high current and external quantum efficiencies of 44.25 cd/A and 17.8%, respectively. The recorded efficiency of FLU-DCAR is better than that of triphenylamine based FLU-DTPA (32.54 cd/A, 12.8%) and reference 1,1-Bis [(di-4-tolylamino) phenyl] cyclohexane TAPC (20.45 cd/A, 14.91%). Moreover, non-doped fluorescent devices fabricated to understand our newly synthesized molecules as dopant, and both molecules exhibited a deep blue emission.

MXenes, carbon nanotubes, and nanoparticles are attractive candidates for electromagnetic interference (EMI) shielding. The composites were prepared through a filtration technique and spray coating process. The functionalization of non-woven carbon fabric is an attractive strategy. The prepared composite was characterized using X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), and Raman spectroscopy. The MXene-oxidized carbon nanotube-sodium dodecyl sulfate composite (MXCS) exhibited 50.5 dB (99.999%), and the whole nanoparticle-based composite blocked 99.99% of the electromagnetic radiation. The functionalization increased the shielding by 15.4%. The composite possessed good thermal stability, and the maximum electric conductivity achieved was 12.5 Scm-1. Thus, the composite shows excellent potential applications towards the areas such as aeronautics, mobile phones, radars, and military.