Synthesis of donor-acceptor alternating copolymer by uncatalyzed condensation polymerization

New quaternary phosphonium salt as multi-site phase-transfer catalyst for various alkylation reactions

“…In our study, the catalytic efficiency of new MPTC was first examined by -alkylation reactions in fluorene derivatives (Scheme 2). Many researchers have reported using various phase-transfer catalysts, but the reaction time has been more [16][17][18][19][20][21][22][23][24][25][26]; however, in the presence of MPTC 3 we got more yield in less time under mild basic conditions at room temperature (30°C). Secondly, the efficiency of MPTC 3 was examined by the alkylation reaction of curcumin.…”

Efficient blue fluorescent organic light-emitting diodes based on novel 9,10-diphenyl-anthracene derivatives

“…To date, many small-molecule emitters, including anthracene [10][11][12][13][14][15][16][17][18] , carbazole [19][20][21][22] , fluorine [23][24][25] , triarylamine [26][27][28] , and pyrene [29][30][31] derivatives, have been reported for application in blue OLEDs. As known to all, anthracene was widely used as an attractive building block and starting material for fluorescent blue emitting in OLEDs, due to its high fluorescence quantum yield, wide energy band-gap and easy modification.…”

“…Thus, many endeavours have been made to avoid the planar configuration by introducing different functionalized blocks to the 9,10-positions of anthracene. [23][24][25] Arylamine group is well-known for its ability to transport charge carriers, and incorporated it into other molecules can improve hole injection and carrier transport properties and increase bulky volumes and thermal stability, as well as improve device stability due to the amorphous structure, charge balance and reduce energy consumption. 39 But the incorporation of two perpendicular naphthyl can not completely overcome the red-shifting and fluorescence quenching problems.…”

“…[40][41][42][43] Fluorene derivatives were also widely used in OLEDs as blue emitter due to several advantages including their capability of emitting in the blue region spectrum, chemical and morphologic stability, and thermal durability under operation. [23][24][25] Arylamine group is well-known for its ability to transport charge carriers, and incorporated it into other molecules can improve hole injection and carrier transport properties and increase bulky volumes and thermal stability, as well as improve device stability due to the amorphous structure, charge balance and reduce energy consumption. [26][27][28] And the materials with uorenamine or indenocarbazole group have shown excellent holeinjection and transporting capability.…”

New limb-structured blue light-emitting material comprising an anthracene core with bulky substituents at its 2, 3, 9, and 10-positions

“…To date, many fluorescent blue emitters have been reported, such as the derivatives of anthracene [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22], phenylene [19,23,24], pyrene [25][26][27][28], fluorene [29][30][31][32][33][34], carbazole [35][36][37][38], triarylamine [21,41,42] as well as other aromatic hydrocarbons [39,40]. In spite of this, there is still a clear need for further improvement in terms of efficiency and color purity compared to red and green emitters.…”