Journal
CHEM
Volume 7, Issue 10, Pages 2758-2770Publisher
CELL PRESS
DOI: 10.1016/j.chempr.2021.07.016
Keywords
-
Categories
Funding
- MaxWater Initiative of the Max Planck Society
- DAAD Project Based Personnel Exchange Program [57526761]
- ERC Starting grant [852909]
- ERC Consolidator grant
- DFG project [CRC 1415, 417590517]
- Graphene Flagship Core 3
- European Research Council (ERC) [852909] Funding Source: European Research Council (ERC)
Ask authors/readers for more resources
The research focuses on the polymerization reaction mechanism at water surfaces and the highly crystalline materials produced through surfactant-monolayer-assisted interfacial synthesis (SMAIS). It was found that the accumulation and ordered arrangement of positively charged aniline derivatives at the water surface play a crucial role in the formation of highly crystalline, conductive polyaniline films.
Unlike in the bulk, the hydrogen bond network of water is interrupted at water interfaces, and thus chemical reaction occurs at the water interface in a different manner than in the bulk, owning to, e.g., the possibility of templating molecules. On-water chemistry has generated highly crystalline, functional 2D materials through surfactant-monolayer-assisted interfacial synthesis (SMAIS). Yet, the details of the on-water reaction mechanism have remained unresolved. Here, by tracking the quasi-2D polyaniline film generation process using in situ surface-specific vibrational technique, we clarify how the polymerization reaction occurs at the water surfaces during SMAIS. We identify an aniline derivative with a positively charged terminal =NH2 group as a key reaction intermediate species for highly crystalline film formation. A comparison of differently designed water interfaces reveals that intermediate species can be accumulated and ordered at the interface by the negatively charged surfactant headgroups, prompting highly crystalline, conductive polyaniline film formation. These results demonstrate the importance of interfacial electric fields and electrostatic interactions for controlled on-water chemistry.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available