Hybrid Chlorides with Methylhydrazinium Cation: [CHNHNH]CdCl and Jahn-Teller Distorted [CHNHNH]CuCl.

The synthesis, structural, phonon, optical, and magnetic properties of two hybrid organic-inorganic chlorides with monoprotonated methylhydrazinium cations (CHNHNH, MHy), [CHNHNH]CdCl (MHyCdCl), and [CHNHNH]CuCl (MHyCuCl), are reported. In contrast to previously reported MHyCl ( = Mn, Ni, and Co) analogues, neither compound undergoes phase transitions. The MHyCuCl has a crystal structure familiar to previous crystals composed of edge-shared 1D chains of the [CuClN] octahedra.

Luminescence and Dielectric Switchable Properties of a 1D (1,1,1-Trimethylhydrazinium)PbI Hybrid Perovskitoid.

The synthesis and investigation of the physicochemical properties of a novel one-dimensional (1D) hybrid organic-inorganic perovskitoid templated by the 1,1,1-trimethylhydrazinium (MeHy) cation are reported. (MeHy)[PbI] crystallizes in the hexagonal 6/ symmetry and undergoes two phase transitions (PTs) during heating (cooling) at 322 (320) and 207 (202) K. X-ray diffraction data and temperature-dependent vibrational studies show that the second-order PT to the high-temperature hexagonal 6/ phase is associated with a weak change in entropy and is related to weak structural changes and different confinement of cations in the available space.

Mechanism of Unusual Isosymmetric Order-Disorder Phase Transition in [Dimethylhydrazinium]Mn(HCOO) Hybrid Perovskite Probed by Vibrational Spectroscopy.

[DMHy]Mn(HCOO) (DMHy = dimethylhydrazinium cation) is an example of an organic-inorganic hybrid adopting perovskite-like architecture with the largest organic cation used so far in the synthesis of formate-based hybrids. This compound undergoes an unusual isosymmetric phase transition at 240 K on heating. The mechanism of this phase transition has a complex nature and is mainly driven by the ordering of DMHy cations and accompanied by a significant distortion of the metal-formate framework in the low temperature (LT) phase.

Vibrational and optical studies of a nonlinear optical crystal, CsBiO(GeO).

Single crystals of a non-centrosymmetric and polar CsBiO(GeO) compound were grown from melt. This material was characterized by polarized Raman scattering at room temperature. The comparison to the polycrystalline IR and Raman spectra has been made and assignment of all observed modes to the respective vibrations and their symmetry has been proposed.

Preparation and Characterization of Self-Assembled Poly(l-Lactide) on the Surface of β-Tricalcium Diphosphate(V) for Bone Tissue Theranostics.

This work was aimed to obtain and characterize the well-defined biocomposites based on β-tricalcium diphosphate(V) (β-TCP) co-doped with Ce and Pr ions modified by poly(l-lactide) (PLLA) with precise tailored chain length and different phosphate to polymer ratio. The composites as well as β-tricalcium diphosphate(V) were spectroscopically characterized using emission spectroscopy and luminescence kinetics. Morphological and structural properties were studied using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM).