TCNE-decorated triphenylamine-based conjugated polymer: Click synthesis and efficient turn-on fluorescent probing for Hg2+
摘要:
A type of triphenylamine-based conjugated polymer with cyano-containing chromophore in side chain, poly[(9,9-diocty1)-2,7-fluorene-co-N-4-(1,1,4,4-tetracyanobuta-1,3-dienyl)-4,4 '-triphenylaminel (P3) was successfully synthesized by catalyst-free and efficient click reaction between poly[(9,9-dioctyl)-2,7fluorene-co-N-4-ethynyl-4,4 '-triphenylamine] (P2) and tetracyanoethylene (TCNE). Chemical structures of intermediates and target polymer were verified by FT-IR and H-1 NMR analyses. Fluorescence of P3's THF solution was specifically quenched by the introduction of I-, accompanied by the change of its apparent color from pale brown to light yellow. With the introduction of Hg2+, fluorescence of P3/I(-)complex recovered quickly and even exceeded the initial intensity of pristine P3 (when the concentration of Hg2+ above similar to 6.65 x 10(-5) M). Other common cations brought very slight interference for P3/I(-)complex's response of Hg2+, and the detection limit of Hg2+ reached similar to 6.9 nM for such probing system. (C) 2013 Elsevier Ltd. All rights reserved.
A novel isoquinoline‐containing C^N^C ligand and its phosphorescent triphenylamine‐based alkynylgold(III) dendrimers have been synthesized. These alkynylgold(III) dendrimers serve as phosphorescent dopants in the fabrication of efficient solution‐processable organic light‐emitting devices (OLEDs). The photophysical, electrochemical, and electroluminescence properties were studied. A saturated red emission
合成了一种新型的含异喹啉的C ^ N ^ C配体及其磷光的基于三苯胺的炔基金(III)树状聚合物。这些炔基金(III)树状聚合物在制造有效的可溶液加工的有机发光器件(OLED)时用作磷光掺杂剂。研究了光物理,电化学和电致发光性质。实现了CIE坐标为(0.64,0.36)的饱和红色发射和3.62%的高EQE值。与其他红色发光的铱(III)树状聚合物不同,在高电流密度下观察到的开启电压低于3 V,效率下降幅度减小。这可以归因于增强的载流子传输能力和高代树状聚合物的相对较短的寿命。
Bipolar Gold(III) Complexes for Solution-Processable Organic Light-Emitting Devices with a Small Efficiency Roll-Off
A new class of bipolar alkynylgold(III) complexes containing triphenylamine and benzimidazole moieties has been synthesized, characterized, and applied as phosphorescent dopants in the fabrication of solution-processableorganiclight-emittingdevices (OLEDs). The incorporation of methyl groups in the central phenyl unit has been found to rigidify the molecule to reduce nonradiative decay, yielding