نتایج جستجو برای: amphiphiles
تعداد نتایج: 1255 فیلتر نتایج به سال:
Polymersomes are self-assembled polymer shells composed of block copolymer amphiphiles. These synthetic amphiphiles have amphiphilicity similar to lipids, but they have much larger molecular weights, so for this reason--along with others reviewed here--comparisons of polymersomes with viral capsids composed of large polypeptide chains are highly appropriate. We summarize the wide range of polym...
Amphiphilic molecules can form closed-shell structures that are determined by competing attractive and repulsive forces. Since supramolecular shape has its roots in intermolecular interactions, the interplay of electrostatic, hydrophobic, and steric forces can generate nonspherical structures. Here we show that anionic and cationic amphiphiles of unequal charge can coassemble into small buckled...
Integral membrane proteins play central roles in controlling the flow of information and molecules across membranes. Our understanding of membrane protein structures and functions, however, is seriously limited, mainly due to difficulties in handling and analysing these proteins in aqueous solution. The use of a detergent or other amphipathic agents is required to overcome the intrinsic incompa...
Experimental data for a series of central and simple molecules in biosystems show that some amino acids and a simple sugar molecule have a chiral discrimination in favor of homochirality. Models for segregation of racemic mixtures of chiral amphiphiles and lipophiles in aqueous solutions show that the amphiphiles with an active isomerization kinetics can perform a spontaneous break of symmetry ...
Strongly interacting amphiphilic molecules self-assemble in water. The flexibility of the amphiphiles and their head group repulsion mediate nanostructure geometry.
A new type of giant amphiphilic molecule has been synthesized by covalently connecting a lipase enzyme headgroup to a maleimide-functionalized polystyrene tail (40 repeat units). The resulting biohybrid forms catalytic micellar rods in water.
Amphiphilic molecules, comprising hydrophobic and hydrophilic moieties the intrinsic propensity to self-assemble in aqueous environment, sustain a fascinating spectrum of structures functions ranging from biological membranes ordinary soap. Facing challenge design responsive, adaptive, out-of-equilibrium systems water, incorporation photoresponsive motifs amphiphilic molecular offers ample oppo...
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