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Updated: May 24, 2026

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
Published on: February 6, 2020
Charge-based assemblies comprising planar receptor-anion complexes with bulky alkylammonium cations.
Bin Dong1, Yoshitaka Terashima, Yohei Haketa
1College of Pharmaceutical Sciences, Institute of Science and Engineering, Ritsumeikan University, Kusatsu 525-8577, Japan.
Bulky tetraalkylammonium cations form charge-by-charge assemblies with planar receptor-anion complexes. The cation structure dictates the assembly state, creating diverse charge-based materials.
Area of Science:
- Supramolecular chemistry
- Materials science
Background:
- Planar receptor-anion complexes serve as a foundation for molecular assembly.
- Tetraalkylammonium cations are key components in supramolecular structures.
Purpose of the Study:
- To investigate the formation of charge-by-charge assemblies using tetraalkylammonium cations and planar receptor-anion complexes.
- To explore how cation structure influences the resulting assembled materials.
Main Methods:
- Utilizing a planar receptor-anion complex as a template.
- Employing tetraalkylammonium cations with varying numbers and lengths of alkyl chains.
- Characterizing the assembled structures formed through charge-by-charge interactions.
Main Results:
- Demonstrated the construction of charge-by-charge assemblies with alternating positive and negative charged species.
- Showcased that the number and length of alkyl chains on the cations control the assembly states.
- Generated a library of charge-based materials based on cation structure.
Conclusions:
- Tetraalkylammonium cations can effectively mediate charge-by-charge assembly with planar receptor-anion complexes.
- The precise control over cation architecture allows for the design of diverse supramolecular materials.
- This approach offers a pathway to engineer novel charge-based materials with tunable properties.
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