Thermal stability and EL efficiency of polymer thin film prepared from TPD-acrylate

Star-Shaped, Dendrimeric and Polymeric Triarylamines as Photoconductors and Hole Transport Materials for Electro-Optical Applications

“…The application of these polymer films as hole transport layers in OLEDs in combination with vapor deposited Alq 3 was also reported. [52] Kolb et al reported a poly(methyl methacrylate) containing N-biphenyl-N,N-diphenylamine unit as a pendent group. [53] Due to the absence of para-substitution in the TPA unit, the resulting polymer exhibited irreversible oxidation leading to dimerized species.…”

Thiol–yne crosslinked triarylamine hole transport layers for solution-processable organic light-emitting diodes

“…To achieve insoluble HTLs for multi-layer architectures, crosslinking is a promising way forward. [15][16][17][18][19][20][21][22] A wide range of crosslinking reactions suitable for the synthesis of triarylaminecontaining polymers was reported, including light-induced 21 or heat-induced 23 [2+2] cycloaddition, acrylate [24][25][26][27][28] or styrene [29][30][31][32][33] side-chain free-radical polymerization, anionic living polymerization, 34,35 siloxane condensation, [36][37][38][39] Schiff bases polycondensation, 40 electrochemical oxidative polymerization, [41][42][43] diyne polycyclotrimerization 44 and polycondensation of bisphenols or biscarbamates with aryl or alkylhalogenides 45,46 or diamines with diacid chlorides. 47 A range of metal-catalyzed reactions, such as Cu(I)-catalyzed azide-alkyne click reaction, 48 Pd-catalyzed Buchwald-Hartwig amination 49,50 and Suzuki crosscoupling, [51][52][53] Ullmann reaction 54,55 as well as ring-opening metathesis [56]…”

Thermally evaporable 5,10-dihydroindeno[2,1-a]indenes form efficient interfacial layers in organic solar cells

“…In particular, organic photovoltaics (OPVs) have the merits of low cost, stability, simple fabrication, and exibility. 39,40 Based on these results, in this study, we prepared novel interfacial materials through structural variation by incorporating N,N-di(p-methoxyphenyl) amine (strong electron donor) or carbazole (high hole mobility) [41][42][43][44] moieties of the 5,10-dihydroindeno[2,1-a]indene skeleton. For example, when n-and p-type materials are completely blended in a monolayer, the migrating electrons may be transported in the reverse direction, thereby interfering with the output current.…”

“…They exhibit sky-blue to greenish-blue uorescence and excellent hole mobility. 39,40 Based on these results, in this study, we prepared novel interfacial materials through structural variation by incorporating N,N-di(p-methoxyphenyl) amine (strong electron donor) or carbazole (high hole mobility) [41][42][43][44] moieties of the 5,10-dihydroindeno[2,1-a]indene skeleton. Our aim was to obtain thermally evaporable small molecules that could be readily synthesized and puried and to examine their potential applications in OPVs.…”