Planar-Chiral Macrobicycles Comprising Cyclam Moiety

Luminescent Sensing and Catalytic Performances of a Multifunctional LanthanideOrganic Framework Comprising a Triphenylamine Moiety

A multifunctional lanthanide-organic framework Tb − TCA (H 3 TCA = tricarboxytriphenylamine) comprising a triphenylamine moiety as an effi cient luminescence sensitizer is synthesized by a solvothermal method and structurally characterized. Tb − TCA exhibits lanthanide-based emission (540 nm) and triphenylamine emission (435 nm) after excitation at 350 nm and works as a luminescent chemosensor ...

Planar chiral meta-materials for optical applications

Using electron beam lithography we have fabricated arrays of metallic and non-metallic planar chiral structures on silicon substrates, and observed the pronounced effects of their chirality on the polarization states of the diffracted light in the transmission regime. Significant differences in polarization properties were observed between metallic and polymer structures, most notably in the de...

Asymmetric wave propagation in planar chiral fibers.

We demonstrate the realization of a two-dimensional chiral optical waveguide with an infinite translational symmetry that exhibits asymmetric wave propagation. The low-symmetry geometry of the cross-section that lacks any rotational and mirror symmetries shows in-principal directional asymmetric polarization rotation. We use general symmetry arguments to provide qualitative analysis of the wave...

Circular dichroism of planar chiral magnetic metamaterials.

We propose, fabricate, and study a double-layer chiral planar metamaterial that exhibits pronounced circular dichroism at near-infrared wavelengths. The antisymmetric oscillation modes of the two coupled layers allow local magnetic-dipole moments and enhanced polarization effects compared with similar single-layer systems where only electric-dipole moments occur. Experiment and rigorous theoret...

Quasi-planar Chiral Materials for Microwave Frequencies