通过可扩展的直接化制备的离散n型寡合体的长度依赖性质的演变
Rukiya Matsidik1,2, Hartmut Komber3, Martin Brinkmann4
1Institut für Chemie, TU Chemnitz, Professur Polymerchemie, Straße der Nationen 62, 09111 Chemnitz, Germany.
Journal of the American Chemical Society
|April 6, 2023
概括
我们用C-H激活合成了新型n型寡合体, 这些材料具有可调节的特性,并作为结构功能研究的模型.
科学领域:
- 有机电子产品
- 材料科学
- 聚合物化学
背景情况:
- 有机电子设备使用小分子和聚合物,材料具有中间特征.
- 探索小分子和聚合物之间的材料对于有机电子技术的发展至关重要.
研究的目的:
- 开发离散的n型寡合体的克尺度合成,采用交替的二甲二胺 (NDI) 和二甲 (T2) 单位.
- 研究寡合体长度和结构对光学,电子,热和结构性质的影响.
- 将这些寡合物与它们的聚合物类型进行比较 (PNDIT2).
主要方法:
- 使用催化C-H激活的离散寡合物的格拉姆尺度合成.
- 包括光学,电子,热学和结构分析在内的寡合物特性.
- 理论计算和实验验证以了解结构与属性之间的关系.
主要成果:
- 成功合成离散的n型寡合物T2-(NDI-T2) n (n ≤ 7) 和NDI-(T2-NDI) n (n ≤ 8),其持续长度高达~10 nm.
- 由于强大的捐赠-接受系统,分子能量水平不受链条长度的影响.
- 线性寡合体表现出高晶度,而分支或末端的寡合体表现出降低的晶度和无形行为.
- 在n=4 (真空) 和n=8 (溶液) 时的和吸收最大值.
结论:
- 离散的n型寡合物为有机电子提供了有前途的材料,弥合了小分子和聚合物之间的差距.
- 这种C-H激活方法允许高效,高产的精确的寡合物合成.
- 这些寡合物作为研究有机电子材料的长度结构功能关系的优秀模型系统.
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