期刊
CHEMISTRY OF MATERIALS
卷 33, 期 9, 页码 3196-3206出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.1c00079
关键词
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资金
- National Research Foundation [2018R1A2B3003758]
- Ministry of Science and ICT, Korea
- National Research Foundation of Korea [2018R1A2B3003758] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The study revealed that the amine-catechol pair has an antisynergetic effect on intermolecular cation-pi interactions, indicating that it may not always have a positive role in underwater adhesion.
Cation-pi interactions play important roles in various biological systems. Recently, cation-pi interactions have been suggested to have considerable roles in mussel adhesion, which is the most well-known biological model for underwater adhesion. Although amine-catechol pair synergy in mussel adhesion has been well studied for surface adhesion in the aqueous phase, little is known about its effect on cohesion, particularly in intermolecular cation-pi interactions. Here, we designed mussel-inspired model peptides to characterize the amine-catechol pair effect on cation-pi interactions. We used nanomechanics to measure the interaction directly and probed cation-pi interactions with nuclear magnetic resonance and Raman spectroscopy. Moreover, we established the origins of these effects through intensive Raman spectra analysis. We discovered that amine-catechol pairs have antisynergetic effects on intermolecular cation-pi interactions, and this finding may provide the insight that the amine-catechol pair synergy may not always work on the positive side in underwater adhesion.
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