Regioselective Photocyclization To Prepare Multifunctional Blocks for Ladder-Conjugated Materials
摘要:
Multifunctional building blocks 8 and 9 were efficiently synthesized by fusing a perylene-3,4,9,10-tetracarboxylic acid bisimide (PBI) core with o-phenylenediamine, and they were condensed with a pyrenedione and a pyrenetetraone, respectively, to construct new ladder-type conjugated oligomers 12 and 13. In the key photocyclization step, an unusual regioselectivity at the position ortho to the nitro group was discovered in the coupling of the o-nitroaniline functional units at the bay sites of PBI. Bulk-heterojunction solar cells based on 12 and 13 as the acceptors exhibited reasonable performance.
ladder‐conjugated star‐shaped oligomer electron‐transporting material TetraPDI‐PF, with four perylene diimide (PDI) branches and a fluorene core, was efficiently synthesized. The oligomer is highly soluble in dichlorobenzene with a solubility of 155 mg mL−1, which is higher than those of PDI (35 mg mL−1) and PDI‐Phen (70 mg mL−1). Demonstrated by thermogravimetric analysis (TGA), the oligomer exhibits excellent
一种新型的梯形共轭星形低聚物电子传输材料TetraPDI-PF具有四个per二酰亚胺(PDI)分支和一个芴核,得到了有效的合成。该低聚物高度溶于二氯苯,溶解度为155 mg mL -1,高于PDI(35 mg mL -1)和PDI-Phen(70 mg mL -1)。通过热重分析(TGA)证明,低聚物在分解温度(T d)为291.2°C,比PDI高65°C。循环伏安法(CV)和微分脉冲伏安法(DPV)用于研究电化学性能。尽管已经连续扫描了TetraPDI-PF的CV曲线15个循环,但它们仍保持不变的还原电位。该低聚物还显示出出色的光稳定性,甚至优于PDI,后者在使用最大激光强度照射10分钟后仍可保持99%的荧光强度。在稳态空间电荷限制电流(SCLC)设备中,TetraPDI-PF的固有电子迁移率更高,为2.22×10 -5 cm 2 V -1 s -1,比PDI(3.52×)高三个数量级。
A novel perylenediimide molecule: Synthesis, structural property relationship and nanoarchitectonics
between perylene molecules, the morphology of nano-architectonics and absorption properties of compound 1 are investigated by DFT calculations. On the basis of molecular orbitals, we have explained the electronic transitions and energy state in compound 1. The conjugation in compound 1 is affected by the degree of twisting in perylene ring due to the substituent at the baypositions of the perylene core
π-Extended helicenes and their derivatives represent green polycyclic aromatic hydrocarbons. Here, we report the design and synthesis of a novel phenothiazine and perylene diimide (PDI)-fused [7]helicene, represented as SPS-PY-PT, to study the aggregation-induced emission (AIE) phenomenon along with its photophysical and electroactive properties. The conventional strategy for AIE uses a twisted molecule
Soluble Ladder Conjugated Polymer Composed of Perylenediimides and Thieno[3,2-<i>b</i>]thiophene (LCPT): A Highly Efficient Synthesis via Photocyclization with the Sunlight