传统的螺连接共轭材料由于其光学和电子特性的独特组合而对有机光电应用具有吸引力。然而,在众多的螺连接共轭材料中,共轭延伸沿分子主轴方向的螺连接共轭材料仍然只是罕见的例子。在此,我们开发并优化了 π 延伸的螺连接共轭材料——螺[4.4]壬烷-1,6-二酮和螺[5.5]十一烷-1,7-二酮的合成。所提出的设计概念从容易获得的丙二酸酯开始,包含几个步骤:丙二酸酯与溴甲基芳基(杂芳基)的双烷基化;将丙二酸酯转化为相应的丙二酸;后者在五氧化二磷存在下亲电螺环化成环状螺[4.4]壬烷-1,6-二酮或螺[5.5]十一烷-1,7-二酮。基于这些见解,所开发的方法产生了与苯、噻吩和萘稠合的螺连接共轭核,并装饰有活性卤素原子。通过单晶 X 射线衍射分析确定了合成的螺环的结构。溴原子修饰的苯稠合螺[4.4]壬烷-1,6-二酮转化为V型亚苯基-噻吩共低聚物型螺二聚体 用活性卤素原子装饰。通过单晶 X 射线衍射分析确
A fluorene compound is provided, which is represented by the following Formula (I):
in Formula (1), R
11
and R
12
each independently represent an alkyl group having 1 to 6 carbon atoms; R
21
and R
22
each independently represent an alkyl group having 1 to 8 carbon atoms, or an alkoxy group having 1 to 8 carbon atoms; and n1 and n2 each independently represent an integer of from 1 to 5.
P<sub>2</sub>O<sub>5</sub>-Promoted Cyclization of Di[aryl(hetaryl)methyl] Malonic Acids as a Pathway to Fused Spiro[4.4]nonane-1,6-Diones
作者:Konstantin S. Ivanov、Tim Riesebeck、Alexandrina Skolyapova、Irina Liakisheva、Maxim S. Kazantsev、Alina A. Sonina、Roman Yu Peshkov、Evgeny A. Mostovich
DOI:10.1021/acs.joc.1c02379
日期:2022.3.4
fused spiro[4.4]nonane-1,6-dione decorated with bromine atoms was transformed into V-shape phenylene-thiophene co-oligomer type spirodimers via Stille coupling. The spiro-bis(4-n-dodecylphenyl)-2,2′-bithiophene derivative possessed high photoluminescence properties in both solution and solidstate with a photoluminescence quantum yield (PL QY) of 38%.
传统的螺连接共轭材料由于其光学和电子特性的独特组合而对有机光电应用具有吸引力。然而,在众多的螺连接共轭材料中,共轭延伸沿分子主轴方向的螺连接共轭材料仍然只是罕见的例子。在此,我们开发并优化了 π 延伸的螺连接共轭材料——螺[4.4]壬烷-1,6-二酮和螺[5.5]十一烷-1,7-二酮的合成。所提出的设计概念从容易获得的丙二酸酯开始,包含几个步骤:丙二酸酯与溴甲基芳基(杂芳基)的双烷基化;将丙二酸酯转化为相应的丙二酸;后者在五氧化二磷存在下亲电螺环化成环状螺[4.4]壬烷-1,6-二酮或螺[5.5]十一烷-1,7-二酮。基于这些见解,所开发的方法产生了与苯、噻吩和萘稠合的螺连接共轭核,并装饰有活性卤素原子。通过单晶 X 射线衍射分析确定了合成的螺环的结构。溴原子修饰的苯稠合螺[4.4]壬烷-1,6-二酮转化为V型亚苯基-噻吩共低聚物型螺二聚体 用活性卤素原子装饰。通过单晶 X 射线衍射分析确
Synthesis and characterization of graft polymethacrylates containing conducting diphenyldithiophene for organic thin-film transistors
radically polymerized to form graftpolymethacrylates with the conducting PTTP segments as pendant side chains. Both the terminal alkyl side chain and spacer between the PTTP segments and polymer backbone could be varied to study fundamental structure–property relationships for this class of materials. Specifically, a group of three different PTTP graftpolymethacrylates has been successfully synthesized