Most photophysical studies in the halide perovskite have focused on characteristics of surface. However, photons generated at surface would be absorbed by same material (re-absorption), and photophysics re-absorbed are rarely studied. Herein, we present our recent observation re-emission (photoluminescence after re-absorption, IR) Cs4PbBr6, which is temporally slower than surface-emission (IS)....

We report the facile and efficient synthesis of common electrophilic haloboranes via a protonolysis reaction between Piers’ borane, HB(C6F5)2, H−X (X=Cl, Br). This route benefits from fast times, easy setup, minimal workup to yield analytically pure etherates, (C6F5)2BCl(OEt2) (1) (C6F5)2BBr(OEt2) (2), as well ether-free tri-coordinate species, (C6F5)2BBr (3).

The new thiostannate Na4Sn2S6 was prepared by directed crystal water removal from the hydrate ⋅ 5H2O at moderate temperatures. While structure of comprises isolated [Sn2S6]4− anions, that anhydrate contains linear chains composed corner-sharing SnS4 tetrahedra, a structural motif not known in chemistry. This rearrangement requires bond-breakage anion, movements fragments opened anion and Sn−S−S...