Corrugated 2D antimony-halide perovskites such as Cs3Sb2Cl9 (CSC) are promising candidates for single-source white-light emission due to their ultra-broadband spectra. However, CSC has a serious luminescence quenching phenomenon inadequate confinement of excitons. In article number 2200930, Fei Xu, Xiang Wang, Feng Hong and co-workers report the homovalent substitution strategy Sb by small amou...

The effect of carbon monoxide on the luminescence properties of Helix pomatia alpha-hemocyanin and Panulirus interruptus hemocyanin has been studied. These proteins, when saturated with carbon monoxide, show, besides the intrinsic fluorescence arising from the aromatic amino acid residues, emission in the visible region with a maximum between 540 and 560 nm. Results of carbon monoxide titration...

The quenching effect of Se(>4— and NO3(scavenger for trapped electrons) on the delayed luminescence ('recombination luminescence') caused by the recombination of trapped electrons with mother tryptophan cations was investigated in aqueous 9 M NaOH and 9.5 M LiCI glasses at 77 K . The results show that the trapped electrons responsible for the recombination fluorescence were deep-trapped ones in...

A photo- and thermo-driven azoarene-based circularly polarized luminescence molecular switch in liquid crystal host is reported by Jinbao Guo, Quan Li co-workers their Research Article (e202311486). In the resulting helical superstructure, reversible modulation of polarization inversion on-off-switchable have been achieved.

Superatomic Molecules In article number 2300024, Yuichi Negishi and co-workers present a review focusing on vertex-shared linear M12n+1 superatomic molecules (M = noble metal), which discusses the most suitable ligand combinations for their synthesis, along with valence electron numbers, stability, optical absorption characteristics, luminescence properties of molecules.

The Tb(iii) complex of the iron-transport protein transferrin (Tb(2)-Tfr) exhibits strongly sensitised, sharp line luminescence from f-f states following multiphoton excitation via two tyrosinate residues directly co-ordinated to the lanthanide ion. Using an ultrafast Ti:sapphire laser system, a quadratic dependence of the Tb(iii) luminescence intensity was observed on excitation with photons a...

The site isolation of lanthanide cations (Er3+, Tb3+, and Eu3+) has been achieved through the self-assembly of three convergent polyether dendrons, each with a carboxylate anion focal point, around the central trivalent cation. Evidence for the self-assembly of the dendritic complexes can be obtained by a variety of spectroscopic and other analytical means both in solution and in the solid stat...

A new series of organic light emitting copolymers, poly(dioctyl fluorene -co diphenyl oxadiazole)s P(DOFDPO), are reported in this paper. We found organic polymer light emitting devices with comparable device efficiency and more saturated blue color based on this new series of copolymers with less than 10% DPO moiety when compared with poly(dioctyl fluorene) P(DOF) devices. The device structure...

Upconversion luminescence imaging of thermal barrier coatings (TBCs) has been shown to successfully monitor TBC delamination progression during interrupted furnace cycling. However, furnace cycling does not adequately model engine conditions where TBC-coated components are subjected to significant heat fluxes that produce through-thickness temperature gradients that may alter both the rate and ...

ZnAl2O4 spinel powders were prepared using the Pechini or co-precipitation synthetic route and were then treated at different temperatures (600–1350 °C). These powders were characterised by X-ray diffraction, scanning electron microscopy (SEM), diffuse reflectance and luminescence measurements. SEM investigations and the X-ray patterns showed that the spinel crystallite size was dependent on th...