醌在有机合成和生物系统中是众所周知的有机氧化剂,但是与n型有机半导体相关的电子接受能力却很少得到开发。在这里,我们报告了对两组π不足的并五苯醌,氟化并五苯醌和N-杂戊并苯醌的综合研究,重点介绍了它们的电子结构,分子堆积和n沟道薄膜晶体管。发现用F原子取代并五苯醌的H原子或用N取代C原子可以降低并五苯醌的最低未占据分子轨道(LUMO)能级,从而产生场效应迁移率高达0.1 cm以上的n型有机半导体。2 V -1 s -1在薄膜晶体管中。在两组醌的电子结构和分子堆积方面进行比较,得出了有趣的发现,即吸电子部分在调节前沿分子轨道和π堆积中的作用。关于分子堆积的另一个有趣发现是四重弱氢键,该氢键连接了相邻的醌π堆栈。这项研究表明,π缺乏的醌将是n型有机半导体的一般设计。
This study demonstrates that the easily synthesized N-heteroquinones, having unusual quadruple weak hydrogen bonds of a DDAA–AADD pattern, can function as n-type organic semiconductors in OTFTs with high electron mobility.
这项研究表明,易于合成的 N-heteroquinones 具有不寻常的 DDAA-AADD 模式四倍弱氢键,可在 OTFT 中用作具有高电子迁移率的 n 型有机半导体。
Efficient Synthesis of Substituted Dihydrotetraazapentacenes
作者:Claire Seillan、Hugues Brisset、Olivier Siri
DOI:10.1021/ol801509v
日期:2008.9.18
We describe a versatile and very efficient synthesis of previously unknown substituted 5,14-dihydro-5,7,12,14-tetraazapentacenes (DHTAPs). A structural study by NMR spectroscopy showed that the conjugated pi-system of the pentacyclic skeleton rearranges depending on the electronic effect of the substituent(s).
Novel method for the preparation of derivatives of dihydrotetraazapentacenes, products such as obtained and uses thereof
申请人:Université de la Méditerranée - Aix-Marseille II
公开号:EP2078720A1
公开(公告)日:2009-07-15
The present invention relates to a method for the preparation of compounds having the following formula (I):
in which:
R1, R2, R3, and R4 represent, independently from each other, in particular H or an alkyl group having from 1 to 20 carbon atoms,
said method comprising the reaction of a compound of formula (II)
R1 and R2 being as defined above,
with a compound having the following formula (III):
R3 and R4 being as defined above,
in the presence of a catalytic amount of an acid.
phospho-ylide Ru(II) description of the complex was established based on 13C as well as 31P NMR studies. The complex shows rich spectral and redoxproperties. UV–Vis–NIR spectrum consisted of multiple low-energy transitions in the visible and near IR regions. Preliminary density functional theory calculations were employed to understand the electronic structure and to assign the spectral transitions. Cyclic
在H 2 L 2(H 2 L 2 = N-异戊四烯)与Ru(PPh 3)3 Cl 2的不寻常反应中,通过共轭碱的前所未有的化学转化获得了磷酰钌钌(II)络合物(1)。[L 2 ] 2-。伴随着芳环的羟基化和新的C-P键形成反应,形成了一个双齿磷酸化-叶立德配体。新的配体,与Ru II结合作为中性的N,O供体 通过单晶X射线衍射确定晶体结构已用于表征该化合物。基于13 C和31 P NMR研究建立了配合物的磷酰化Ru(II)描述。该配合物显示出丰富的光谱和氧化还原特性。紫外-可见-近红外光谱由可见光和近红外区域的多个低能跃迁组成。初步的密度泛函理论计算用于了解电子结构并指定光谱跃迁。报告了电生成的氧化化合物的循环伏安图和EPR光谱,并将其用于表征氧化还原特性。