Themed collection Chirality at the nanoscale

Techniques used for the study of the secondary structure of polymers by means of atomic-force microscopy are evaluated.

Surface chirality arising from self-organized molecular monolayers may manifest both a handedness and footedness, leading to a dual level of chiral expression.

We discuss optical activity in metal nanoclusters and semiconductor quantum dots, broadly focusing on recent advances in nanoscale chirality in plasmonic nanoparticles and their assemblies.

The chiral expression of a molecule on a surface is driven from a random solid solution on Cu(100) to a racemic crystal on a Sn/Cu(100) alloy.

The chirality of alkyl side chains has a significant impact on the microstructures of regioregular poly(3-alkylthiophene)s.

The autocatalytic decomposition of tartaric acid on Cu(111) exhibits unique kinetics, which are linked to a hexagonal surface structure adopted at high coverage.

R- and S-enantiomorphs of the Cu(643) surface catalyze the enantiospecific explosive decomposition of D- and L-aspartic acid.

Chiral adsorption of a complex molecule with as many as eight possible pairs of surface enantiomers is investigated by STM and the selection of enantiomers is understood by statistical analysis and DFT modelling.

Achiral hydrogen bonded rod-like complexes with four nonequally distributed terminal alkyl chains form a chirality synchronized isotropic liquid conglomerate as well as a conglomerate type chiral cubic phase.

Templated cooperative binding induced assembly of chromophores is achieved via interactions between Zn-complexes and the DNA phosphodiester backbone.

A heterochiral BTA monomer forms long rods in cyclohexane whilst its homochiral analogue assembles into dimers.

The ability of vortexes to tune the chirality of graphene oxide in water sheds light on its complex supramolecular organization allowing for selective noncovalent deposition of a predetermined handedness on a solid surface.

A surface induces diastereoselectivity in Ullmann coupling of bromohelicenes.

Viedma ripening of ethylenediammonium sulfate can be directed with chiral 1,2-diammonium sulfate derivatives according to the “rule-of-reversal”.

Tuning of the structural type and conducting properties have been achieved through chirality of the precursor and anion size.

The chirality of TPPS J aggregates followed the supramolecular chirality of assemblies from chiral molecules rather than the molecular chirality.

We demonstrate that chiral magnesium nanoparticles show remarkable plasmonic extinction- and chiroptical-effects in the ultraviolet region.

Manipulation of polymer electronic structure provides a new means to modulate the first-order hyperpolarizabilities (β_HRS values) of chiral, individualized polymer-wrapped single-walled carbon nanotube superstructures at a telecommunication-relevant wavelength (1280 nm).

Using the conversion of a metastable racemic compound into the conglomerate, fast deracemization of two amino acid derivatives was achieved.

The overall synthesis of novel chiral nanosized metal-oxide nanofilms and surfaces, based on the chiral templating of cellulose with alumina using the atomic layer deposition process.

Strong hydrogen bonding facilitates a more efficient amplification of chirality because of its critical role in chiral communication.

An optically-inactive foldamer undergoes helicity induction and subsequent helix-inversion with the increasing amount of a single enantiomeric guest.

Optical crystallography of precipitated hot supersaturated solutions of calcium sulphate shows oriented attachment of gypsum crystals at homochiral facets.

The surface-confined self-assembly of K- and A-shaped molecular bricks with carefully adjusted size and functionality into fractal aggregates is demonstrated using theoretical modeling.

The structure-making or breaking abilities of different anions, according to the Hofmeister series, play an important role in controlling the kinetics of growth and the chirality in porphyrin J-aggregates.

A chiral molecular sensor is used to recognize ferrocene, with the chiroptical readout used selectively in the presence of competing analytes.

The crystallographic orientation of chiral step facets created by L-aspartic acid adsorption dictates enantioselectivity on chiral surfaces vicinal to Cu{111}.

Different origins of the reversible and irreversible emergence of chiroptical signals in the title J-aggregates.

Chiral, conformationally flexible C₃-symmetrical trisamides self-assemble into helical aggregates but a helical bias is only expressed in linear alkane solvents and not in cyclic ones.

We investigate structure–activity effect relationships at the nanoscale chiral molecular recognition interface between enantiomeric self-assembled multivalent (SAMul) systems and biological polyanions, heparin and DNA.

An adjustable broadband reflector based on a polymer stabilized chiral nematic liquid crystal has been fabricated.

Monodisperse nanoclusters are produced via G-quadruplex assembly with potassium salts in which red-absorbing phthalocyanine dyes are arranged in a well-defined chiral organization.