期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 111, 期 37, 页码 13284-13289出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1414843111
关键词
peptoid assembly; vibrational sum frequency spectroscopy; liquid surfaces; biomimetic polymers; protein mimetic materials
资金
- US Department of Energy (DOE), Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-FG02-96ER45557]
- Office of Science, Office of Basic Energy Sciences, of the US DOE [DE-AC02-05CH11231]
- Defense Threat Reduction Agency [IACRO-B1144571]
Peptoid nanosheets are a recently discovered class of 2D nanomaterial that form from the self-assembly of a sequence-specific peptoid polymer at an air-water interface. Nanosheet formation occurs first through the assembly of a peptoid monolayer and subsequent compression into a bilayer structure. These bilayer materials span hundreds of micrometers in lateral dimensions and have the potential to be used in a variety of applications, such as in molecular sensors, artificial membranes, and as catalysts. This paper reports that the oil-water interface provides another opportunity for growth of these unique and highly ordered peptoid sheets. The monolayers formed at this interface are found through surface spectroscopic measurements to be highly ordered and electrostatic interactions between the charged moieties, namely carboxylate and ammonium residues, of the peptoid are essential in the ability of these peptoids to form ordered nanosheets at the oil-water interface. Expanding the mechanism of peptoid nanosheet formation to the oil-water interface and understanding the crucial role of electrostatic interactions between peptoid residues in nanosheet formation is essential for increasing the complexity and functionality of these nanomaterials.
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