288301-88-2

Upstream product

• 36809-32-2 N-(4-trifluoromethylphenyl)-N-methylaniline 
• 122-39-4 diphenylamine 
• 455-13-0 4-Iodobenzotrifluoride 

Downstream Products

• 904873-75-2 N,N-bis-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-(p-trifluoromethyl)aniline 

Relevant academic research and scientific papers

Synthesis of novel triphenylamine-based conjugated polyelectrolytes and their application as hole-transport layers in polymeric light-emitting diodes

Alternating triphenylamine-based copolymers poly[N-(4- sulfonatobutyloxyphenyl)-4,4′-diphenylamine-alt-1,4-phenylene] sodium salt (PTPOBS) and poly[N-(4-sulfonatophenyl)-4,4′-diphenylamine-alt-N-(p- trifluoromethyl)phenyl-4,4′-diphenylamine] sodium salt (PTFTS) were synthesized via palladium-catalyzed Suzuki coupling reaction. These polymers are soluble only in polar solvents, such as dimethyl sulfoxide (DMSO) and a mixed solvent of methanol and N,N-dimethyl formamide (DMF), rather than in non-polar solvents such as toluene and xylene. The electrochemical and photophysical properties of the resulted copolymers were investigated. The HOMO levels of the polymers (-5.08 eV for PTPOBS and -5.24 eV for PTFTS) were close to the work function of PEDOT. The relatively high-lying LUMO levels (-2.21 eV for PTPOBS and -2.24 eV for PTFTS) revealed that they had good electron-blocking capabilities. Devices with a PTPOBS or PTFTS layer inserted between ITO or PEDOT and of red and green-emitting polymers showed lower turn-on voltages and enhanced efficiency compared with the reference devices composed of bare ITO or ITO/PEDOT as anode. These polymers can be used as an independent hole-transport/electron-blocking layer or in combination with a PEDOT layer for fabrication of multilayer devices without intermixing with the subsequent EL layer by solution processing in full-color display applications. The Royal Society of Chemistry 2006.

Feasible energy level tuning in polymer solar cells based on broad band-gap polytriphenylamine derivatives

A series of versatile broad band-gap alternating copolymers (P1, P2, P3 and P4) based on triphenylamine (TPA) and benzofurazan derivatives, differing in the substituted groups [-OC8H17, -C8H17, -CF3, -(CF3)2] in their triphenylamine units, were designed and synthesized by Suzuki polycondensation. The relationships between the substituted groups in TPA and the highest occupied molecular orbital (HOMO) energy levels, as well as the open circuit voltages (Vocs), were investigated in detail. The HOMO levels of these four polymers decreased sequentially when the substituted groups shifted from electron-donating groups [-OC8H17, -C8H17] to electron-withdrawing groups [-CF3, -(CF3)2], which led to the successive increase in Vocs of the polymer solar cells (PSCs) based on these polymers. Through the characterization of photovoltaic performance, the highest Voc, which reached up to 1.00 V, was achieved by the polymer with bis(trifluoromenthyl) substituted group (P4), which is one of the highest Voc values based on polytriphenylamine derived polymers for PSCs. Among these polymers, the one with octyl side chain (P2) showed the best photovoltaic performance with the highest short circuit current density (Jsc) and fill factor (FF), giving a Jsc of 4.84 mA cm-2, FF of 50%, Voc of 0.80 V and power conversion efficiency (PCE) of 2.22%.