Controlled self-assembly of helical nano-ribbons formed by achiral amphiphiles

Song, Bo; Liu, Bin; Jin, Yingzhi; He, Xingxing; Tang, Danting; Wu, Guanglu; Yin, Shouchun

doi:10.1039/c4nr06693f

Cited by 29 publications

(17 citation statements)

References 60 publications

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“…Over the past two decades, spontaneous symmetry breaking has been found in various self-assembly systems including crystals [24][25][26], Langmuir monolayers [27][28][29], liquid/solid interface [30][31][32], liquid crystals [33][34][35][36][37], dye aggregates [14,16,38,39], amphiphilic assemblies [40,41], and supramolecular gels [42][43][44][45][46][47]. Figure 1 illustrates some typical examples in these field.…”

Section: Symmetry Breaking In Self-assembly Systemsmentioning

confidence: 99%

Symmetry Breaking in Self-Assembled Nanoassemblies

Sang

Liu

2019

Symmetry

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The origin of biological homochirality, e.g., life selects the L-amino acids and D-sugar as molecular component, still remains a big mystery. It is suggested that mirror symmetry breaking plays an important role. Recent researches show that symmetry breaking can also occur at a supramolecular level, where the non-covalent bond was crucial. In these systems, equal or unequal amount of the enantiomeric nanoassemblies could be formed from achiral molecules. In this paper, we presented a brief overview regarding the symmetry breaking from dispersed system to gels, solids, and at interfaces. Then we discuss the rational manipulation of supramolecular chirality on how to induce and control the homochirality in the self-assembly system. Those physical control methods, such as Viedma ripening, hydrodynamic macro- and micro-vortex, superchiral light, and the combination of these technologies, are specifically discussed. It is hoped that the symmetry breaking at a supramolecular level could provide useful insights into the understanding of natural homochirality and further designing as well as controlling of functional chiral materials.

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Section: Symmetry Breaking In Self-assembly Systemsmentioning

confidence: 99%

Symmetry Breaking in Self-Assembled Nanoassemblies

Sang

Liu

2019

Symmetry

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“…Two‐dimensional spiral structures are also observed at the air/water interface. [3c,52a] In another study, an achiral amphiphilic TPP‐11, which contains a terpyridine at one end of the aliphatic chain and a pyridinium tosylate as the polar segment at the other end, was reported to self‐assemble into a helical nanostructure with a large aspect ratio ( Figure A) . It was assumed that the twist of the terpyridine groups caused the formation of the helicity.…”

Section: From Molecular Design To Chiral Nanoarchitecturesmentioning

confidence: 99%

Section: From Molecular Design To Chiral Nanoarchitecturesmentioning

confidence: 99%

Chiral Nanoarchitectonics: Towards the Design, Self‐Assembly, and Function of Nanoscale Chiral Twists and Helices

et al. 2015

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Helical structures such as double helical DNA and the α-helical proteins found in biological systems are among the most beautiful natural structures. Chiral nanoarchitectonics, which is used here to describe the hierarchical formation and fabrication of chiral nanoarchitectures that can be observed by atomic force microscopy (AFM), scanning tunneling microscopy (STM), scanning electron microscopy (SEM), or transmission electron microscopy (TEM), is one of the most effective ways to mimic those natural chiral nanostructures. This article focuses on the formation, structure, and function of the most common chiral nanoarchitectures: nanoscale chiral twists and helices. The types of molecules that can be designed and how they can form hierarchical chiral nanoarchitectures are explored. In addition, new and unique functions such as amplified chiral sensing, chiral separation, biological effects, and circularly polarized luminescence associated with the chiral nanoarchitectures are discussed.

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“…Recently, many achiral molecules have been reported to form chiral nanostructures and exhibited macroscopic chirality via spontaneous symmetry breaking, such as amphiphile assemblies,12,13 liquid crystals,14–16 dye aggregates,17,18 Langmuir or Langmuir–Blodgett (LB) films,19–21 two-dimensional (2D) assemblies,22–24 supramolecular gels,25–29 and other systems 5,30. However, only preferential chiral nanostructures (one enantiomer is more abundant than the other) rather than homochiral assemblies (only one enantiomer) were obtained.…”

Section: Introductionmentioning

confidence: 99%