Single Plasmonic Nanohelicoids: Selective Excitation of Polarization‐Steered Chiral Photoluminescence in Single Plasmonic Nanohelicoids (Adv. Funct. Mater. 30/2021)

Abstract

The study of chiral photoluminescence in colloidal metal nanostructures extends photoluminescence research to the chiral realm and can enable a deep understanding of optical chirality. In article number 2101502, Dangyuan Lei and co‐workers report the chiral excitation and emission properties of single gold nanohelicoids (GNHs) with intrinsic structural chirality. Single GNHs exhibit polarization‐steered chiral photoluminescence under circular polarized excitation, and attribute this observation to the chiral Purcell effect.

Plasmon–Exciton Strong Coupling Effects of the Chiral Hybrid Nanostructures Based on the Plexcitonic Born–Kuhn Model

“…The selective excitation of chiral plexcitonic systems (S-plexciton and AS-plexciton) provides a new and effective method to control the plexcitonic states, and it may have important application in quantum information processing and quantum network construction. On the other hand, the photoluminescence process of the chiral plexcitonic system in strong coupling regime is expected to demonstrate a richer feature, which deserves systematic exploration …”

“…The ratio of the imaginary part to the weighted line width sum (Im­( E )/∑γ i |α i | 2 ) is a constant (see Figure S4, Supporting Information). Apart from CD responses, the optical chirality distributions, an important local chiral property of the plexcitonic modes, is also related to the hybridization (see the discussion in Section S11.2, Supporting Information). , As can be seen from the above analysis, the chiral optical responses of the hybrid system depend on the chiral characteristics of the original plasmonic modes and their hybrid fractions. Therefore, strong coupling of plasmons and excitons provides a new method to modulate the chiral response of the hybrid system and may have important applications in the field of biochemical sensing and chiral optical device design.…”

“…On the other hand, the photoluminescence process of the chiral plexcitonic system in strong coupling regime is expected to demonstrate a richer feature, which deserves systematic exploration. 66…”

Recent Advances in Material Engineering and Applications for Passive Daytime Radiative Cooling

“…Experimental evidence as well as theoretical calculations verified that both the dense micropore array on the surface and the random nanopores in the bulk played crucial roles in enhancing the solar reflectance and infrared transmittance. Gao et al [124] fabricated reconfigurable and renewable nano/microstructured plastics made of poly (methacrylic acid) (PMAA) hydrogel. The plastics were conveniently fabricated by a locally confined polymerization method, which not only enabled the customization of nano/microstructures for improving the thermal emission and sunlight reflection, but also provided physically cross-linked networks for damage repairing, shape reconfiguration, and recyclable usage.…”

Laser‐Directed Asymmetric Growth of Plasmonic Chiral Ensembles

“…Plasmonic chirality has been an vibrant field of physics and material science in the last decade due to its enhanced chiral light‐matter interactions, [ 1–4 ] which has triggered a set of emerging applications such as chiral molecule sensing, [ 5–9 ] chiral separation, [ 10–11 ] chiral luminescence [ 12 ] and chiral catalysis. [ 13 ] Thus, tremendous efforts have been devoted to the fabrication of chiral nanostructures, which has created a library of intriguing chiral nanosystems.…”