通过 X 射线散射和 4D 扫描透射电子显微镜联合研究乙二醇侧链改性聚噻吩的加工和结构的相关性。

IF 10.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Small Methods Pub Date : 2024-10-10 DOI:10.1002/smtd.202400801

Andrew A Herzing, Lucas Q Flagg, Chad R Snyder, Lee J Richter, Jonathan W Onorato, Christine K Luscombe, Ruipeng Li

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引用次数: 0

摘要

本报告结合掠入射广角 X 射线散射 (GIWAXS) 和四维扫描透射显微镜 (4D-STEM) 分析了热加工对聚(3[2-(2-甲氧基乙氧基)乙氧基]-甲基噻吩-2,5-二基)的影响，聚(3[2-(2-甲氧基乙氧基)乙氧基]-甲基噻吩-2,5-二基)是一种共轭半导体聚合物，在有机电化学晶体管器件中用作活性层。GIWAXS 可测量薄膜的整体结晶度，而 4D-STEM 则可生成单个结晶的形态和取向及其空间范围和分布的真实空间图。4D-STEM 探测器的灵敏度允许在图像扫描的每个位置收集电子衍射图，同时将传入的电子剂量限制在损伤阈值以下。研究还确定了热处理对薄膜中晶体分布和类型的影响。

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Correlation of Processing and Structure in an Ethylene-Glycol Side-Chain Modified Polythiophene via Combined X-Ray Scattering and 4D Scanning Transmission Electron Microscopy.

The results of a combined grazing incidence wide-angle X-ray scattering (GIWAXS) and 4D scanning transmission microscopy (4D-STEM) analysis of the effects of thermal processing on poly(3[2-(2-methoxyethoxy)ethoxy]-methylthiophene-2,5-diyl) are reported, a conjugated semiconducting polymer used as the active layer in organic electrochemical transistor devices. GIWAXS provides a measure of overall crystallinity in the film, while 4D-STEM produces real-space maps of the morphology and orientation of individual crystallites along with their spatial extent and distribution. The sensitivity of the 4D-STEM detector allows for collection of electron diffraction patterns at each position in an image scan while limiting the imparted electron dose to below the damage threshold. The effects of heat treatment on the distribution and type of crystallites present in the films is determined.

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来源期刊

Small Methods Materials Science-General Materials Science

CiteScore

17.40

自引率

1.60%

发文量

347

期刊介绍： Small Methods is a multidisciplinary journal that publishes groundbreaking research on methods relevant to nano- and microscale research. It welcomes contributions from the fields of materials science, biomedical science, chemistry, and physics, showcasing the latest advancements in experimental techniques. With a notable 2022 Impact Factor of 12.4 (Journal Citation Reports, Clarivate Analytics, 2023), Small Methods is recognized for its significant impact on the scientific community. The online ISSN for Small Methods is 2366-9608.