研究目的
To synthesize a long π-conjugated polymeric segment of armchair single-walled carbon nanotubes and explore its potential applications in electron- and hole-transport devices.
研究成果
The successful synthesis of polymer PS1, a long π-extended polymer containing a cyclo-para-phenylene unit and a PPP backbone, represents a key step toward the bottom-up synthesis of uniform carbon nanotubes and provides potential applications in electron- and hole-transport devices.
研究不足
The difficulty of cyclodehydrogenation of non-planar hydrocarbons limited the ability to obtain a closer CNT segment structure. The dynamic shape of PS1 may only reflect one possible conformation.
1：Experimental Design and Method Selection:
The synthesis involved a Pd-catalyzed Suzuki coupling reaction to connect curved and bifunctionalized components into a cyclic molecule, followed by a nickel-mediated Yamamoto homocoupling reaction for polymerization.
2：Sample Selection and Data Sources:
Small molecules were characterized by 1H NMR, 13C NMR, and mass spectrometry. Polymer PS1 was characterized by GPC, NMR, FTIR, and Raman spectroscopies.
3：List of Experimental Equipment and Materials:
Instruments included GPC, NMR, FTIR, and Raman spectrometers. Materials included 1,4-dibromobenzene, 1-chloro-4-iodobenzene, and bis(pinacolato)diboron.
4：Experimental Procedures and Operational Workflow:
The synthesis procedure involved multiple steps including borylation, Suzuki-Miyaura coupling, and polymerization.
5：Data Analysis Methods:
Data were analyzed using GPC for molecular weight distribution, NMR for structural confirmation, and FTIR and Raman for functional group analysis.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
