Self-assembled helical superstructures of polystyrene-b-poly(2-vinyl pyridine) with inversed helicity from induced chirality
نویسندگان
چکیده
منابع مشابه
Reversal aggregation-induced circular dichroism from axial chirality transfer via self-assembled helical nanowires
Two chiral binaphthyl-based enantiomers, (R/S)-7, were designed and synthesized by Sonogashira crosscoupling reaction of AIE-active TPE and O-BOPHY. Interestingly, the resulting (R/S)-7 can exhibit emission enlargement response in DCM/hexane mixtures due to AIE behavior, but fluorescence quenching in THF/H2O mixtures due to ACQ effect. (R/S)-7 can produce gradual reversal AICD (aggregation-indu...
متن کاملSuperstructures of self-assembled cobalt nanocrystals
Uniform three-dimensional superstructures of spherical cobalt nanocrystals are produced by the interplay between dipolar interaction and applied magnetic field. An anomalous low-temperature magnetic behavior is observed, indicating that uncompensated surface spins become ordered below 10 K, as evidenced by the presence of two magnetic phases that superimpose in hysteresis loops as compared to m...
متن کاملSelf-assembled hexanuclear arene ruthenium metallo-prisms with unexpected double helical chirality.
Self-assembly of 2,4,6-tripyridyl-1,3,5-triazine (tpt) subunits with arene ruthenium building blocks and oxalato bridges affords cationic triangular metallo-prisms of the type [Ru6(arene)6(tpt)2(C2O4)3]6+ (arene = C6Me6 and p-Pr(i)C6H4Me); the unexpected double helical chirality of the metallo-prisms observed in the solid state persists in solution giving rise to two different stereodynamic pro...
متن کاملTension-induced straightening transition of self-assembled helical ribbons.
Helical ribbons with pitch angles of either 11 degrees or 54 degrees self-assemble in a wide variety of quaternary surfactant-phospholipid/fatty acid-sterol-water systems. By elastically deforming these helices, we examined their response to uniaxial forces. Under sufficient tension, a low pitch helix reversibly separates into a straight domain with a pitch angle of 90 degrees and a helical dom...
متن کاملSupramolecular structure of helical ribbons self-assembled from a b-sheet peptide
We have investigated the supramolecular structure of helical ribbons formed during self-assembly of a b-sheet peptide using computer simulation. We tested a wide range of molecular packing geometries consistent with the experimental dimensions to identify the most stable structure, and then systematically changed the helical geometry to investigate its energy landscape. The effect of pH was inc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Giant
سال: 2021
ISSN: 2666-5425
DOI: 10.1016/j.giant.2021.100059