Heterocyclic compound and organic light-emitting device including the same
申请人:Samsung Display Co. Ltd.
公开号:US09385327B2
公开(公告)日:2016-07-05
A heterocyclic compound is represented by Formula 1.
An organic light emitting device includes a first electrode, a second electrode and an organic layer between the first and second electrodes. The organic layer includes the heterocyclic compound. An organic light-emitting display apparatus includes the organic light-emitting device and a transistor including a source, a drain, a gate and an active layer. The source or the drain is electrically connected to the first electrode of the organic light-emitting device.
Influence of Electron Delocalization in Heterocyclic Core Systems on the Electrochemical Communication in 2,5-Di- and 2,3,4,5-Tetraferrocenyl Thiophenes, Furans, and Pyrroles
作者:Alexander Hildebrandt、Dieter Schaarschmidt、Ron Claus、Heinrich Lang
DOI:10.1021/ic200926z
日期:2011.11.7
oscillator strength f which could be shown for the first time in organometallic chemistry. This was possible because the series of molecules exhibit analogous geometries and hence, similar electrostatic properties. This correlation was confirmed by electro- and spectro-electrochemical measurements. Within these studies a new approach for the estimation of the effective electron transfer distances rab
使用Negishi C,C交叉偶联方案合成了一系列2,5-二-和2,3,4,5-四茂铁基取代的噻吩,呋喃和吡咯。通过循环伏安法(CV),方波伏安法(SWV)和原位UV-vis / NIR光谱法研究了这些化合物的电子和电化学性质。讨论了固态的2,5-二茂铁基呋喃和2,3,4,5-四茂铁基-1-甲基-1 H-吡咯的分子结构。二茂铁基可被顺序地氧化,以给出适当的二或四铁二茂铁基取代的杂环分子的两个或四个可逆反应。观测到的ΔE°'值的范围介于186和450 mV之间。NIR测量结果证实了电子通信,因为在相应的单-二茂铁基化合物中发现了间隔电荷转移(IVCT)吸收,在双亲性化合物中也发现了这种吸收。根据罗宾和戴(Robin and Day),除四铁茂铁噻吩(I类系统)外,所有化合物均分类为II类系统。它们显示了ΔE °′和IVCT振荡器强度f之间的线性关系。这可能是有机金属化学中的首次展示。这是可能
Synthesis of furo[3,2-<i>b</i>:4,5-<i>b</i>′]diindoles and their optical and electrochemical properties
two-step palladium catalyzed synthesis of furo[3,2-b:4,5-b′]diindoles, a hitherto unknown symmetrical heterocyclic core structure, was developed. The synthesis is based on a regioselective Suzuki–Miyaura cross coupling reaction of tetrabromofuran and subsequent double N-arylation. Selected compounds were studied with regard to their optical and electrochemicalproperties. The compounds show fluorescence
开发了有效的两步钯催化合成呋喃[3,2- b:4,5- b ']二吲哚,迄今未知的对称杂环核心结构。合成基于四溴呋喃和随后的双N的区域选择性Suzuki-Miyaura交叉偶联反应-芳基化。研究了所选化合物的光学和电化学性质。该化合物显示出具有高量子产率的荧光和不可逆的氧化事件。与它们的硫和氮类似物相比,这些化合物具有相似的HOMO-LUMO带隙。取代基的变化几乎不会影响HOMO-LUMO间隙,但可以对电子亲和力和电离势以及量子产率进行一些微调。制备的化合物代表了开发有机电子材料的有趣候选物。
Synthesis of dithienofurans <i>via</i> cascade copper catalysed dual C–S coupling and ring closure reactions under mild conditions
作者:Lu Zhou、Zhaopeng Chen、Jiahui Li、Baolin Li
DOI:10.1039/d1ra06881d
日期:——
catalytic approach for the synthesis of new dithienofuran derivatives via cascade copper catalysed dual C–S coupling and subsequent ring closure reactions. Sonogashira coupling between perbromofuran and terminal alkynes produced 3,4-dibromo-2,5-dialkynylfuran (1) in good yields. Next, copper catalysed C–S coupling between 1 and Na2S·9H2O and a subsequent ring-closure reaction afforded dithienofuran compounds
我们开发了一种温和的催化方法,通过级联铜催化的双 C-S 偶联和随后的闭环反应合成新的二噻吩并呋喃衍生物。全溴呋喃和末端炔烃之间的 Sonogashira 偶联以良好的收率产生 3,4-二溴-2,5-二炔基呋喃 ( 1 )。接下来,铜催化1和 Na 2 S·9H 2 O之间的 C-S 偶联和随后的闭环反应得到二噻吩并呋喃化合物 ( 2) 在温和的条件下。我们发现该策略显示出广泛的底物范围,不仅可以用于制备芳基和杂芳基,还可以用于制备烷基取代的二噻吩并呋喃衍生物,收率高达 70%。此外,我们提出了一种机制,包括两个催化循环:典型的 Cu( I )/Cu( III ) 催化循环和随后的 Cu( II ) 诱导的环化机制。
Site-selective Suzuki–Miyaura cross-coupling reactions of 2,3,4,5-tetrabromofuran
作者:Munawar Hussain、Rasheed Ahmad Khera、Nguyen Thai Hung、Peter Langer
DOI:10.1039/c0ob00695e
日期:——
SuzukiâMiyaura reactions of 2,3,4,5-tetrabromofuran allow a convenient and site-selective synthesis of mono-, di- and tetraarylfurans which are not readily available by other methods.