一种简单的策略已被用于通过双重斯蒂勒偶联和随后的萘二噻吩和5,6-取代的苯并[ b ] -2,1的构建基环环加氢来构建1,2,5-噻二唑稠合的12环π系统。,3-噻二唑。分子1a和1b表现出高度扭曲的π表面,根据DFT计算显示出蝶形构象。在分子内,发现平面对平面的角度为44.8°。紫外/可见吸收,热重分析,差示扫描量热法和循环伏安法(CV)用于研究其物理性质。非平面分子之间的强分子间相互作用也通过浓度依赖性1观察到H NMR光谱测量和薄膜XRD表征。根据CV测量估计,分子的低层LUMO和高层HOMO水平分别为-3.73和-5.48 eV。这表明它们作为溶液处理的有机场效应晶体管(OFETS)的半导体材料的潜力。顶部显示了场效应空穴迁移率高达0.035 cm 2 V -1 s -1,阈值电压为6.98 V,空气中1 a的电流开/关比为8.65×10 5。接触底栅场效应晶体管器件结构;
Naphtho[2,1-b:3,4-b′]bisthieno[3,2-b][1]benzothiophene-based semiconductors for organic field-effect transistors
作者:Zhaoguang Li、Ji Zhang、Kai Zhang、Weifeng Zhang、Lei Guo、Jianyao Huang、Gui Yu、Man Shing Wong
DOI:10.1039/c5tc00631g
日期:——
Naphtho[2,1-b:3,4-b′]bisthieno[3,2-b][1]benzothiophene derivatives exhibiting a hole mobility of up to 0.25 cm2 V−1 s−1 show promise as useful building blocks to construct next-generation high performance organic semiconductors.
Herein, we report the synthesis, characterization, and their photovoltaic and field–effect properties of two dialkoxyl-substituted naphthodithieno[3,2-b]thiophene (NDTT)-based copolymers, namely P1 and P2. The NDTT-based copolymers exhibit broad absorption profiles throughout the visible spectrum up to ca. 800 nm. The copolymers have HOMO/LUMO energy levels of ca. –5.14 eV/–3.52 eV. The dialkoxyl-substituted
在此,我们报道了两种基于二烷氧基取代的萘并噻吩并[3,2- b ]噻吩(NDTT)的共聚物(P1和P2)的合成,表征以及它们的光电性质和场效应性质。基于NDTT的共聚物在整个可见光谱范围内(直至大约)显示出广泛的吸收特性。800纳米 该共聚物的HOMO / LUMO能级为。–5.14 eV / –3.52 eV。二烷氧基取代的NDTT单元使共聚物具有更高的溶液加工性能,并且具有π-π距离小至3.59Å的晶体堆叠薄膜。由P2 / PC 71的混合物制成的聚合物-富勒烯本体异质结太阳能电池使用二碘辛烷作为溶剂添加剂的BM可获得3.54%的最高功率转换效率。基于具有底栅底部接触几何形状的P1的溶液处理的聚合物场效应晶体管表现出有希望的0.070 cm 2 V -1 s -1的空穴迁移率。
A novel, efficient and general synthetic route to unsymmetrical triphenylene mesogens using palladium-catalysed cross-coupling reactions
作者:John W. Goodby、Michael Hird、Kenneth J. Toyne、Timothy Watson
DOI:10.1039/c39940001701
日期:——
A novel, clean and efficient route to unsymmetrical triphenylene mesogens has been developed using palladium-catalysed cross-coupling reactions involving arylboronic acids.
Molecular Triangles: Synthesis, Self-Assembly, and Blue Emission of Cyclo-7,10-tris-triphenylenyl Macrocycles
作者:Matthias Georg Schwab、Tianshi Qin、Wojciech Pisula、Alexey Mavrinskiy、Xinliang Feng、Martin Baumgarten、Hun Kim、Frédéric Laquai、Sebastian Schuh、Roman Trattnig、Emil J. W. List、Klaus Müllen
DOI:10.1002/asia.201100258
日期:2011.11.4
A set of cyclo‐7,10‐tris‐triphenylenyl macrocycles have been prepared by a Yamamoto cyclotrimerization protocol. In these novel macrocycles, three triphenylene units are covalently linked to each other, resulting in the formation of triangular‐shaped molecules. The fully planar derivative revealed pronounced self‐assembly behavior. NMR spectroscopy was used to determine the association constant in