Poly[Bis-EDOT-Isoindigo]: An Electroactive Polymer Applied to Electrochemical Supercapacitors
摘要:
Poly[6,6'-bis(ethylene-3,4-dioxythien-2-yl)]-N,N'-dialkylisoindigo (PBEDOT-iI) was synthesized and incorporated as an electroactive material into electrochemical supercapacitors (ESCs) in type I and type III configurations. In type I ESCs, PBEDOT-iI provides a specific power of similar to 360 W/kg and specific energy of similar to 0.5 Wh/kg, while retaining about 80% of its electroactivity over 10 000 cycles. In addition, we report on the use of PBEDOT-iI in type III supercapacitors where operating voltages as high as 2.5 V were achieved with specific energies of ca. 15 Wh/kg, albeit with limited stability.
isoindigo (PzIIG) was designed and synthesized as a novel electron acceptor to construct two D–A conjugated polymers, PzIIG-BDT2TC8 and PzIIG-BTT2TC10. Both the polymers were successfully applied in polymersolarcells, and the PzIIG-BDT2TC8 based solarcell device exhibited a PCE of 5.26% with a high Voc over 1.0 V.
Significance of secondary forces toward improving the charge carrier mobility of Isoindigo based conjugated small molecules
作者:Satej S. Dharmapurikar、Arulraj Arul Kashmir、Tanya Kumari、Virbhadra Kalalawe、Maruti Kanetkar、Mrinmoy Kumar Chini
DOI:10.1016/j.cplett.2021.138621
日期:2021.7
carrier mobility of conjugated small molecules (CSMs) depends on the intermolecular interactions and morphology. Herein, we report the synthesis of CSMs having different sidechains. Hydrogen bonding, lipophilic imbalance and vanderWaalsinteractions are imparted through the asymmetric substitution of Isoindigo. The secondary forces impact thin film morphology, and charge carrier mobility. The CSMs
A set of three core-cyanated isoindigos was synthesized by palladium-catalyzed cyanation of core-brominated isoindigos. With decreased LUMO level to −3.88 eV, the dicyanated isoindigo 5 showed ambient-stable electron mobility up to 0.044 cm2 V−1 s−1 in OTFTs with SAMs of TPA, while it exhibited ambipolar charge transport behaviour (0.11 cm2 V−1 s−1 for electrons and 0.045 cm2 V−1 s−1 for holes) on FOPA-modified substrates.
Two novel π-extended isoindigo derivatives with long alkyl chains, namely TT-IDG-C8 and TT-IDG-C12, were synthesized and characterized. Both compounds possess liquidcrystal phase transition temperatures below room temperature, at 22.1 and −20.9 °C for TT-IDG-C8 and TT-IDG-C12, respectively. Room-temperatureliquidcrystal monolayers were grown using a simple drop-casting method. Organic field-effect
合成并表征了两种具有长烷基链的新型 π 扩展的异靛蓝衍生物,即TT-IDG-C8和TT-IDG-C12 。两种化合物都具有低于室温的液晶相变温度,TT-IDG-C8和TT-IDG-C12分别为 22.1 和 -20.9 °C。使用简单的滴铸法生长室温液晶单层。然后基于这些单层液晶制造了有机场效应晶体管 (OFET),并为TT-IDG-C8和TT-IDG-C12提取了0.32 和 0.49 cm 2 V -1 s -1的空穴迁移率, 分别。这是室温半导体近晶液晶单分子层的首次展示。