Highly Stable MOF‐Type Lead Halide Luminescent Ferroelectrics

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(29)

Опубликована: Май 15, 2024

Abstract Lead halide molecular ferroelectrics represent an important class of luminescent ferroelectrics, distinguished by their high chemical and structural tunability, excellent processability distinctive characteristics. However, inherent instability, prone to decomposition upon exposure moisture light, hinders broader ferroelectric applications. Herein, for the first time, we present a series isoreticular metal–organic framework (MOF)‐type lead demonstrating exceptional robustness under ambient conditions at least 15 months even when subjected aqueous boiling conditions. Unlike conventional metal‐oxo secondary building units (SBUs) in MOFs adopting highly centrosymmetric structure with limited distortion, our halide‐based occupy structurally deformable [Pb 2 X] + (X=Cl − /Br /I ) SBUs that facilitate c ‐axis‐biased displacement Pb 2+ centers substantially contribute thermoinducible transformation. Importantly, this MOF‐type undergo ferroelectric‐to‐paraelectric phase transitions remarkably Curie temperature up 505 K, superior most ferroelectrics. Moreover, covalent bonding between phosphorescent organic component light‐harvesting inorganic achieves efficient spin‐orbit coupling intersystem crossing, resulting long‐lived afterglow emission. The compelling combination stability, ferroelectricity emission exhibited opens many potential opportunities energy‐conversion

Язык: Английский

Highly Stable MOF‐Type Lead Halide Luminescent Ferroelectrics

Angewandte Chemie, Год журнала: 2024, Номер 136(29)

Опубликована: Май 15, 2024

Abstract Lead halide molecular ferroelectrics represent an important class of luminescent ferroelectrics, distinguished by their high chemical and structural tunability, excellent processability distinctive characteristics. However, inherent instability, prone to decomposition upon exposure moisture light, hinders broader ferroelectric applications. Herein, for the first time, we present a series isoreticular metal–organic framework (MOF)‐type lead demonstrating exceptional robustness under ambient conditions at least 15 months even when subjected aqueous boiling conditions. Unlike conventional metal‐oxo secondary building units (SBUs) in MOFs adopting highly centrosymmetric structure with limited distortion, our halide‐based occupy structurally deformable [Pb 2 X] + (X=Cl − /Br /I ) SBUs that facilitate c ‐axis‐biased displacement Pb 2+ centers substantially contribute thermoinducible transformation. Importantly, this MOF‐type undergo ferroelectric‐to‐paraelectric phase transitions remarkably Curie temperature up 505 K, superior most ferroelectrics. Moreover, covalent bonding between phosphorescent organic component light‐harvesting inorganic achieves efficient spin‐orbit coupling intersystem crossing, resulting long‐lived afterglow emission. The compelling combination stability, ferroelectricity emission exhibited opens many potential opportunities energy‐conversion

Язык: Английский

Crystal structure of bis(β-alaninium) tetrabromidoplumbate

Acta Crystallographica Section E Crystallographic Communications, Год журнала: 2024, Номер 80(9), С. 931 - 935

Опубликована: Авг. 9, 2024

The title compound, poly[bis(β-alaninium) [[dibromidoplumbate]-di-μ-dibromido]] {(C 2 H 8 NO ) [PbBr 4 ]} n or ( β -AlaH) PbBr , crystallizes in the monoclinic space group P 1 / . (PbBr 2− anion is located on a general position and has two-dimensional polymeric structure. Pb center holodirected. supramolecular network mainly based O—H...Br, N—H...Br N—H...O hydrogen bonds.

Язык: Английский