互穿透的捐赠者-受体异质连接在2D结合的Dibenzo[g,p]烯基的Kagome共价有机框架
Tianhao Xue1, Roman Guntermann1, Alexander Biewald1
1Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU), Butenandtstraße 5-13, 81377 Munich, Germany.
具有二[g,p]烯核心的新型共价有机框架 (COF) 显示了双孔的kagome结构. 这些材料使得在先进的应用中能够形成相互透的供体-受体异质连接.
科学领域:
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
- 纳米技术 纳米技术
背景情况:
- 双[g,p]烯的刚性,平面结构是创建共价有机框架 (COF) 的理想选择.
- 之前的COF使用了二[g,p]烯-3,6,11,14-四氨 (DBCTA) 节点.
- 在新的节点中扩展的结合可以增强材料的特性.
研究的目的:
- 使用二[g,p]二烯-2,7,10,15-四) 四胺 (DBCTPTA) 节点合成和表征新的2D COF.
- 研究这些新的基于DBCTPTA的COF的结构和光物理特性.
- 探索这些COF中相互透的供体-接受体 (D-A) 异质连接的形成.
主要方法:
- 合成基于DBCTPTA核心的两个晶体,因胺链接的2DCOFs,其中包含氨 (TT) 和氨 (BDT) 单元.
- COF结构的特征,包括紧密层叠加.
- 在现场合成BDT DBCTPTA COF与烯衍生物 (PCBM) 以形成宿主-客户系统.
主要成果:
- 通过使用DBCTPTA节点成功合成了两种异常结晶的六角双孔kagome 2D COF.
- 在BDT DBCTPTA COF中显示了紧密的层叠.
- 在BDT DBCTPTA COF和PCBM之间形成了一个前所未有的互穿D-A宿主-客系统,显示显著减少光发光寿命 (7±2秒),表明电荷转移.
结论:
- DBCTPTA节点可以构建具有理想结构特征的高度结晶的2D COF.
- 在2DCOF中在现场形成相互透的D-A异质连接是创建先进电子材料的可行策略.
- 这些发现为设计框架材料提供了新的途径,为有机电子等应用程序量身定制的DA接口.
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