在吡啶环上引入三苯胺取代基，以此为跳板构建一个新的、具有吸引力的高发光性1,3-二（2-吡啶基）苯铂（II）配合物家族。
Introduction of a triphenylamine substituent on pyridyl rings as a springboard for a new appealing brightly luminescent 1,3-di-(2-pyridyl)benzene platinum(II) complex family.
作者信息
Colombo Alessia, De Soricellis Giulia, Fagnani Francesco, Dragonetti Claudia, Cocchi Massimo, Carboni Bertrand, Guerchais Véronique, Marinotto Daniele
机构信息
Dipartimento di Chimica, Università degli Studi di Milano, UdR INSTM di Milano, via C. Golgi 19, 20133 Milan, Italy.
Istituto per la Sintesi Organica e la Fotoreattività (ISOF), Consiglio Nazionale delle Ricerche (CNR), via P. Gobetti 101, 40129 Bologna, Italy.
出版信息
Dalton Trans. 2022 Aug 16;51(32):12161-12169. doi: 10.1039/d2dt01792j.
The preparation and characterization of three new complexes, namely [Pt(1,3-bis(4-triphenylamine-pyridin-2-yl)-4,6-difluoro-benzene)Cl] ([PtL1Cl]), [Pt(1,3-bis(4-triphenylamine-pyridin-2-yl)-5-triphenylamine-benzene)Cl] ([PtL2Cl]), and [Pt(1,3-bis(4-triphenylamine-pyridin-2-yl)-5-mesityl-benzene)Cl] ([PtL3Cl]), is reported. All of them are highly luminescent in dilute deaerated dichloromethane solution ( = 0.88-0.90, in the yellow-green region; the in nm for the monomers are: 562, 561 and 549 for [PtL1Cl], [PtL2Cl] and [PtL3Cl], respectively).[PtL1Cl] is the most appealing, being characterized by a very long lifetime (103.9 μs) and displaying intense NIR emission in concentrated deaerated solution ( = 0.66) with essentially no "contamination" by visible light < 600 nm. This complex allows the fabrication of both yellow-green and deep red/NIR OLEDs; OLED emissions are in the yellow-green (CIE = 0.38, 0.56) and deep red/NIR (CIE = 0.65, 0,34) regions, for [PtL1Cl] 8 wt% (with 11% ph/e EQE) and pure [PtL1Cl] (with 4.3% ph/e EQE), respectively.
报道了三种新型配合物的制备与表征，即Pt(1,3 - 双(4 - 三苯胺 - 吡啶 - 2 - 基)-4,6 - 二氟 - 苯)Cl、Pt(1,3 - 双(4 - 三苯胺 - 吡啶 - 2 - 基)-5 - 三苯胺 - 苯)Cl和Pt(1,3 - 双(4 - 三苯胺 - 吡啶 - 2 - 基)-5 - 均三甲苯基 - 苯)Cl。它们在稀的脱气二氯甲烷溶液中均具有高发光性( = 0.88 - 0.90，在黄绿色区域；单体的 以纳米计分别为：[PtL1Cl]为562、[PtL2Cl]为561、[PtL3Cl]为549)。[PtL1Cl]最具吸引力，其特点是寿命极长(103.9 μs)，并且在浓的脱气溶液( = 0.66)中显示出强烈的近红外发射，基本上没有<600 nm的可见光“污染”。这种配合物可用于制造黄绿色和深红色/近红外有机发光二极管；对于[PtL1Cl] 含质量分数8%（外量子效率为11%）和纯的[PtL1Cl]（外量子效率为4.3%），有机发光二极管的发射分别在黄绿色区域(CIE = 0.38, 0.56)和深红色/近红外区域(CIE = 0.65, 0,34)。
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