模块化框架在微尺度域中具有明确的孔隙结构,可建立定制的多孔材料。然而,对于开放分子固体,去溶剂化后维持长程有序本质上是具有挑战性的,因为堆积通常仅由少数超分子相互作用控制。在这里,我们报告了通过两种不同的六羟基三苯并三醌(TBTQ)和苯-1,4-二硼酸(BDBA)共缩合获得的两个系列的纳米立方体,在2,5位具有不同的线性烷基链。TBTQ 顶点的正丁基产生可溶的模型化合物,并通过质谱和核磁共振波谱进行分析。相比之下,甲基取代的笼自发结晶为同结构和高度多孔的固体,其BET表面积和孔体积高达3426 m 2 g -1和1.84 cm 3 g -1。单晶 X 射线衍射和吸附测量揭示了 0.97-2.2 nm 范围内交替微孔和中孔的复杂立方排列,这些排列通过 BDBA 连接体上的烷基取代基进行微调。
Composition containing dopant and co-polymers having non-conjugated spacer units and its use in OLED devices
申请人:Cambridge Display Technology
公开号:US09812644B2
公开(公告)日:2017-11-07
A polymer comprising repeat units of formula (I) and one or more co-repeat units:
Ar1 in each occurrence independently represent an aryl or heteroaryl group;
R1 and R2 in each occurrence independently represent a substituent;
p independently in each occurrence is 0 or a positive integer;
Sp represents a spacer group comprising at least one carbon or silicon atom spacing the two groups Ar1 apart; and
each group Ar1 is bound to an aromatic group of a co-repeat unit.
The polymer may form a charge-transporting layer of an OLED or may be a host material used with a luminescent dopant in a light-emitting layer of an OLED.
There is disclosed a compound having Formula I or Formula I': In Formula I and Formula I': Ar1 and Ar2 are the same or different and are aryl groups; R1 through R5 are independently the same or different at each occurrence and are D, F, alkyl groups, aryl groups, alkoxy groups, silyl groups, or crosslinkable groups; R6 is H, D, or halogen; a through e are independently an integer from 0 to 4; f is 1 or 2; g is 0, 1 or 2; h is 1 or 2; and n is an integer greater than 0.