Ramjee Kandel

2. Materials and Methods 2.1. Materials and Synthesis In this work, polycrystalline CsPbBr3 powder was synthesized via chemical co-precipitation. Reagent grade lead (II) oxide (PbO, Sigma-Aldrich, powder < 10 um, ≥99.9%, trace metals basis) and cesium carbonate (Cs2CO3, Alfa Aesar, powder, 99%) were reacted in aqueous hydrobromic acid (HBr, 48% w/w, aq. soln). Solutions of CsBr and PbBr2 in HBr were prepared under continuous stirring.

Purity Analysis for Room-Temperature Semiconductor Radiation Detection Material, CsPbBr3, using ICP-MS An inductively coupled plasma mass spectrometry (ICP-MS) protocol was developed for trace impurity analysis of the halide perovskite semiconductor, CsPbBr3. Method validation was performed by doping solution synthesized CsPbBr3 samples with distinct amounts of a multi-element mixture.

Rh(I) and Ru(II) Phosphaamidine and Phosphaguanidine (1,3-P,N) Complexes and Their Activity for CO2 Hydrogenation Phosphaamidine metal complexes Rh2Cl2[Ph2PC(Ph)=NPh]2µ-CO (1), RuCl2[Ph2PC(Ph)=N(Ph)]2 (2), [Rh{iPr2PC(Ph)=NiPr}(COD)]BF4 (3), and RuCl2[iPr2PC(Ph)=NiPr](DMSO)2 (4) are prepared by combining phosphaamidines Ph2P-C(Ph)=NPh and iPr2P-C(Ph)=NiPr (1,3-P,N) with their corresponding metal ions. Complexes 1 and 2 are stable in air while 3 and 4 are stable under inert conditions.