Self-assembly of amphiphilic peptides: Effects of the single-chain-to-gemini structural transition and the side chain groups

Cao, Meiwen; Cao, Changhai; Zhou, Peng; Wang, Ningning; Wang, Dong; Wang, Jiqian; Xia, Daohong; Xu, Hai

doi:10.1016/j.colsurfa.2015.01.044

Cited by 16 publications

(10 citation statements)

References 39 publications

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“…Specifically, the amide I region (Figure 4) for each peptide all gave a prominent band at ~1630 cm −1 and two shoulders at ~1665 and 1673 cm −1 . The peak at 1630 cm −1 can be ascribed to β-sheet secondary structure [53,54], being in consistence with the CD results. The peak at 1673 cm −1 is suggested to indicate an antiparallel β -strand arrangement [49,55].…”

Section: Resultssupporting

confidence: 74%

Self-Assembly of Short Elastin-like Amphiphilic Peptides: Effects of Temperature, Molecular Hydrophobicity and Charge Distribution

et al. 2019

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A novel type of self-assembling peptides has been developed by introducing the basic elastomeric β-turn units of elastin protein into the amphiphilic peptide molecules. The self-assembly behaviors of such peptides are affected by the overall molecular hydrophobicity, charge distribution and temperature. The molecules with higher hydrophobicity exhibit better self-assembling capability to form long fibrillar nanostructures. For some peptides, the temperature increase can not only promote the self-assembly process but also change the self-assembly routes. The self-assembly of the peptides with two charges centralized on one terminal show higher dependence on temperature than the peptides with two charges distributed separately on the two terminals. The study probes into the self-assembly behaviors of short elastin-like peptides and is of great help for developing novel self-assembling peptides with thermo sensitivity.

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Section: Resultssupporting

confidence: 74%

Self-Assembly of Short Elastin-like Amphiphilic Peptides: Effects of Temperature, Molecular Hydrophobicity and Charge Distribution

et al. 2019

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“…These nanorods and nanofibrils are most likely to be the self-assembled aggregates of I 3 C-CI 3 . 43 The notably high graphite exfoliation efficiency of I 3 C-CI 3 is ascribed to the complexation between the I 3 C-CI 3 molecules and aggregates and graphene sheets. It is reasonable that the I 3 C-CI 3 molecules adsorb on the graphene surface in two ways, monomer adsorption and aggregate adsorption.…”

Section: Resultsmentioning

confidence: 99%

“…Besides, being larger in size the adsorbed I 3 C-CI 3 aggregates can introduce steric repulsion into the system, which will also help improve the graphene suspending capability. 34 Our previous study has indicated that I 3 C-CI 3 had relatively high self-assembling ability due to its specific molecular geometry as well as the high hydrophobicity and strong b-sheet forming propensity of the constituent Ile residue, 43 which can account significantly for its higher graphite exfoliation efficiency relative to other peptide molecules.…”

Section: Resultsmentioning

confidence: 99%

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Direct exfoliation of graphite into graphene in aqueous solutions of amphiphilic peptides

Cao

Wang

et al. 2016

J. Mater. Chem. B

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“…The higher viscosifying ability [1] and lower molecular surface activity [2] of polymers are mainly induced by the intramolecular association and intermolecular association generated by weak intermolecular forces, such as hydrophobic interaction of hydrophobic groups in aqueous solutions [3]. Especially, the hydrophobic association polymers containing long-chain hydrophobic alkyls are prone to generating intermolecular association and significant surface activity under low concentrations [4]. Thus, amphiphilic water-soluble polymers can be widely used as thermal-resistant and antisalt oil displacement agents in tertiary oil recovery [5][6][7], watercraft painting polymer dispersing agents [8], drug-controlled release [9][10][11], and other technical fields [12].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Aqueous Properties of an Amphiphilic Terpolymer with a Novel Nonionic Surfmer

et al. 2018

International Journal of Polymer Science

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A series of surfactive amphiphilic polymer PAADs were prepared from the copolymerization of sodium acrylate, dodecyl polyoxyethylene acrylate (DPA, a surfmer), and acrylamide under the action of a mixed initiating agent consisting of ammonium persulfate-sodium bisulfite/2,2′-azobis[2-(2-imidazolin-2-yl) propane] dihydrochloride. The aggregative behaviors of PAADs were explored by 13C nuclear magnetic resonance, a viscometer, and a surface tension instrument. It was found that the apparent viscosity and surface activity of PAADs were significantly improved by the increase of average sequence length of hydrophobic micro blocks, strong intermolecular hydrophobic association, or the formation of mixed micelles between hydrophobic micro blocks and micromolecular surface-active agent. The introduction of long-chain alkyls on molecular chains prolonged the average sequence length of hydrophobic micro blocks in molecular chains and enhanced the hydrophobic association between molecular chains and the tight arrangement of molecular chains on water surfaces, thereby increasing the surface activity. Moreover, the anionic monomer sodium acrylate on molecular chains, via electrostatic repulsion, promoted the conversion from intrachain association to intermolecular association and thereby facilitated the formation of dense interfacial films, enhancing the surface activity of water solutions. Then, the anion surfmer sodium dodecylbenzenesulfonate interacted with the hydrophobic micro blocks on the molecular chains to form mixed micelles, which accelerated the interchain association and enhanced the polymer surface activity. The novel polymeric micelle with higher viscosifying ability and surface activity was expected to be a promising oil drive agent for tertiary oil recovery.

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Self-assembly of amphiphilic peptides: Effects of the single-chain-to-gemini structural transition and the side chain groups

Cited by 16 publications

References 39 publications

Self-Assembly of Short Elastin-like Amphiphilic Peptides: Effects of Temperature, Molecular Hydrophobicity and Charge Distribution

Self-Assembly of Short Elastin-like Amphiphilic Peptides: Effects of Temperature, Molecular Hydrophobicity and Charge Distribution

Direct exfoliation of graphite into graphene in aqueous solutions of amphiphilic peptides

Synthesis, Characterization, and Aqueous Properties of an Amphiphilic Terpolymer with a Novel Nonionic Surfmer

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