用于发光电化学电池的含周期性八元环的波浪状石墨烯纳米带

IF 16.1 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Sebastian Obermann, Xin Zhou, L. Andrés Guerrero-León, Gianluca Serra, Steffen Böckmann, Dr. Yubin Fu, Dr. Evgenia Dmitrieva, Dr. Jin-Jiang Zhang, Dr. Fupin Liu, Dr. Alexey A. Popov, Dr. Andrea Lucotti, Prof. Dr. Michael Ryan Hansen, Prof. Dr. Matteo Tommasini, Dr. Yungui Li, Prof. Dr. Paul W. M. Blom, Dr. Ji Ma, Prof. Dr. Xinliang Feng
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引用次数: 0

摘要

精密石墨烯纳米带(GNR)具有与众不同的物理化学特性,这些特性高度依赖于其几何拓扑结构,因此在碳基光电子学和自旋电子学中具有巨大的应用潜力。边缘结构和宽度控制一直是设计 GNR 光电特性的流行策略,但由于合成方面的挑战,非六边形环状 GNR 仍未得到充分开发,尽管其在定制特性方面具有同样大的潜力。在此,我们报告了一种在碳骨架中嵌入周期性八元环的波浪状 GNR(wGNR)的合成过程,该合成是通过二苯并环辛二炔(6)与二环戊二烯并[e,l]芘-5,11-二酮衍生物(8)之间的 A2B2 型 Diels-Alder 聚合反应实现的,随后对得到的梯形聚合物(LTP)前体进行选择性 Scholl 反应。在 DFT 计算的支持下,通过固态核磁共振、傅立叶变换红外光谱、拉曼光谱和紫外可见光谱对所获得的长度达 30 纳米的 wGNR 进行了全面表征。wGNR 的非平面几何形状有效地防止了带间 π-π 聚集,从而导致溶液中的光致发光。因此,wGNR 可作为有机发光电化学电池(OLEC)的发光层,为将发光 GNR 应用于光电器件提供了概念验证探索。采用 wGNR 的快速反应 OLEC 将为 OLEC 技术和其他光电器件的发展铺平道路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Wavy Graphene Nanoribbons Containing Periodic Eight-Membered Rings for Light-Emitting Electrochemical Cells

Wavy Graphene Nanoribbons Containing Periodic Eight-Membered Rings for Light-Emitting Electrochemical Cells

Precision graphene nanoribbons (GNRs) offer distinctive physicochemical properties that are highly dependent on their geometric topologies, thereby holding great potential for applications in carbon-based optoelectronics and spintronics. While the edge structure and width control has been a popular strategy for engineering the optoelectronic properties of GNRs, non-hexagonal-ring-containing GNRs remain underexplored due to synthetic challenges, despite offering an equally high potential for tailored properties. Herein, we report the synthesis of a wavy GNR (wGNR) by embedding periodic eight-membered rings into its carbon skeleton, which is achieved by the A2B2-type Diels–Alder polymerization between dibenzocyclooctadiyne (6) and dicyclopenta[e,l]pyrene-5,11-dione derivative (8), followed by a selective Scholl reaction of the obtained ladder-type polymer (LTP) precursor. The obtained wGNR, with a length of up to 30 nm, has been thoroughly characterized by solid-state NMR, FT-IR, Raman, and UV/Vis spectroscopy with the support of DFT calculations. The non-planar geometry of wGNR efficiently prevents the inter-ribbon π–π aggregation, leading to photoluminescence in solution. Consequently, the wGNR can function as an emissive layer for organic light-emitting electrochemical cells (OLECs), offering a proof-of-concept exploration in implementing luminescent GNRs into optoelectronic devices. The fast-responding OLECs employing wGNR will pave the way for advancements in OLEC technology and other optoelectronic devices.

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来源期刊
CiteScore
26.60
自引率
6.60%
发文量
3549
审稿时长
1.5 months
期刊介绍: Angewandte Chemie, a journal of the German Chemical Society (GDCh), maintains a leading position among scholarly journals in general chemistry with an impressive Impact Factor of 16.6 (2022 Journal Citation Reports, Clarivate, 2023). Published weekly in a reader-friendly format, it features new articles almost every day. Established in 1887, Angewandte Chemie is a prominent chemistry journal, offering a dynamic blend of Review-type articles, Highlights, Communications, and Research Articles on a weekly basis, making it unique in the field.
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