Circularly Polarized Luminescence in Achiral Tin-Based Perovskites via Structural Isomer-Driven Coordination Interaction

The Journal of Physical Chemistry Letters, Год журнала: 2025, Номер unknown, С. 4181 - 4188

Опубликована: Апрель 18, 2025

A chiral bidentate ligand, (R)-(-)-1-amino-2-propanol (denoted as R1) or (R)-(-)-2-amino-1-propanol R2), was used to modify achiral 2D tin-based perovskite HDASnBr4 (HDA: 1,6-hexamethylenediamine) form R1-HDASnBr4 R2-HDASnBr4 by an acid precipitation method. exhibits a near-unity photoluminescence quantum yield (PLQY) and strong yellow circularly polarized luminescence (CPL) with asymmetry g-factor (|glum|) of 8.3 × 10-3, while shows PLQY 95% |glum| 3.2 10-3. Both exhibit CPL activities, attributed the significant centro-asymmetric distortion induced interaction between ligand inorganic lattice perovskites. The is 2.6× that R2-HDASnBr4, resulting from direct coordination hydroxyl group attached carbons in R1 [SnBr6]4- framework, which induces higher degree than amino R2. Furthermore, we explored potential inducer source facilitate asymmetric polymerization. This work offers simple strategy introduce chirality

Язык: Английский

---

Pseudohalide Anions Driven Structural Modulation in Distorted Tetrahedral Manganese(II) Hybrids toward Tunable Green‐Red Emissions

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 26, 2024

Mn(II)-based halides have recently garnered significant interest as emerging luminescence materials for diverse photonic applications. Generally, Mn(II) hybrids with tetrahedral coordination show green emission, however, ones octahedral give red emission. Herein, we design the synthesis of pseudohalide hybrids, (RPh

Язык: Английский

---

Photocycloaddition of Zero-Dimensional Metal Halide Hybrids with Reversible Photochromism

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(24), С. 31313 - 31321

Опубликована: Июнь 5, 2024

In this work, two zero-dimensional (0D) metal halide hybrids L2ZnBr4 [1, L = (E)-4-(2-(1H-pyrrol-3-yl)vinyl)-1-methylpyridin-1-ium] and L6Pb3Br12 (2) were prepared, which demonstrated photochromism photoinduced cracking. Upon irradiation at 450 nm, a single crystal-to-single crystal transformation occurred as result of the [2 + 2] photocycloaddition L. Interestingly, compared to complete in 1, only two-thirds monomers could be photodimerized 2 because difference orientation. 1 shows reversible photochromic behavior including rapid response time, few cracks, high conversion rate, good reaction reversibility, while exhibits no significant color change but distinct cracking large local lattice strain induced by inhomogeneous anisotropic deformation. Moreover, results shift photoluminescence 2, attributed variation conjugation π electrons distortion clusters. As proof-of-concept, optical writing is for 1. These findings provide new insights into design stimuli-responsive multifunctional materials.

Язык: Английский

---

Fluorescent Dye‐Based Chiral Crystalline Organic Salt Networks for Circularly Polarized Luminescence

Small, Год журнала: 2024, Номер unknown

Опубликована: Окт. 24, 2024

Abstract A facile and general strategy is developed herein for the construction of circularly polarized luminescence (CPL) materials with simultaneously high fluorescence quantum efficiency (Φ) large dissymmetry factor (g lum ). The self‐assembly fluorescent dye, disodium 4,4′‐bis(2‐sulfonatostyryl)biphenyl (CBS), chiral diamines such as (R,R)/(S,S)‐1,2‐diaminocyclohexane (R/S‐DACH) R/S‐1,2‐diaminopropane (R/S‐DAP), produces four crystalline organic salt networks (COSNs). These as‐synthesized salts emit strong blue‐color CPL upon excitation, both Φ g values up to 79% 0.022. well‐defined molecular structures arrangements CBS are directly observed through single crystal X‐ray analysis, offering crucial information regarding origins high‐efficiency performance. chirality amine effectively transferred further amplified supramolecular structure by multiple hydrogen bonding π–π stacking interactions, giving rise factors; meanwhile, fixation ordered arrangement these interactions empower efficient suppression motions, facilitating fluorescence. This work can inspire assembly via charge‐assisted bonds between dyes inducers. It also offers important insight into structural

Язык: Английский

---

Switchable Circularly Polarized Luminescent Mn-Based Hybrid Metal Halides

Journal of Materials Chemistry C, Год журнала: 2024, Номер 13(5), С. 2190 - 2197

Опубликована: Ноя. 28, 2024

This approach offers a straightforward strategy to create high-quality, stimulus-responsive chiral metal halide single crystals with large and switchable circularly polarized luminescence for use in anti-counterfeiting luminescent devices.

Язык: Английский

---

The synthesis, structures and characterizations of (C5H12NO)4Cd3Cl10∙2H2O and (C5H12NO)2BiCl6∙H5O2 crystals

Journal of Molecular Structure, Год журнала: 2024, Номер 1322, С. 140501 - 140501

Опубликована: Окт. 25, 2024

Язык: Английский

---

Crystal Structure, Phase Transition and Dielectric Behaviors of One‐dimensional Organic‐inorganic Bromoargentate Hybrids of [Et‐dabco]₂Ag₂Br₄

European Journal of Inorganic Chemistry, Год журнала: 2024, Номер 27(33)

Опубликована: Окт. 29, 2024

Abstract A new haloargentate hybrid, [Et‐dabco]₂Ag₂Br₄ ( 1 ) (Et‐dabco + =1‐Ethyl‐1,4‐diazabicyclo[2.2.2]octan‐1‐ium), has been successfully synthesized by a solution diffusion method and characterized using microanalysis, single crystal X‐ray diffraction, variable‐temperature powder diffraction (PXRD), differential scanning calorimetry (DSC), dielectric spectra. The structure of at 273 K contains one‐dimensional (1D) anionic [Ag₂Br₄] 2− chains, with the [Et‐dabco] cations embedded in gaps between inorganic chains. Hybrid underwent reversible structural phase transition (SPT) around 464.5 on heating, Pawley refinement revealed similar structures low‐ high‐temperature phases. SPT endows switchable bistable properties. Combined previous studies, it was that self‐assembly silver halide (AgX) lower rotational energy barrier 1‐alkyl‐1,4‐diazabicyclo[2.2.2]octan‐1‐ium probably achieves materials.

Язык: Английский

---

Synchronously improved luminescence efficiency and thermal stability of organic–inorganic chloride single crystals through doping of Sb³⁺

New Journal of Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Synchronously improved luminescence efficiency and thermal stability of (CH 3 ) 4 NMnCl :Sb 3+ crystals through doping Sb exhibits potential applications in white LEDs.

Язык: Английский

---

Enhanced Circularly Polarized Luminescence Induced by Efficient Stacking of Axial Chiral Molecules in Liquid Crystal Polymer Films

ACS Applied Optical Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 25, 2024

Endowing liquid crystal polymers with chirality and luminescence is a powerful strategy to address the low asymmetry factor (glum) of organic circularly polarized (CPL) films. However, mechanism chiral transfer amplification in multicomponent stacking mode polymers, exogenous molecules, fluorescent dyes remains challenge. Here, CPL films high glum values were obtained by controlling modes three components. Employing axial 1,1′-bi-2-naphthol as dopant allowed for more efficient induction due its favorable H-aggregation self-assembly additional π–π interactions achiral components, resulting considerable value 0.57. This work provides insights into understanding offers flexible approach design advanced materials.

Язык: Английский

---

Pseudohalide Anions Driven Structural Modulation in Distorted Tetrahedral Manganese(II) Hybrids toward Tunable Green‐Red Emissions

Angewandte Chemie, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 26, 2024

Abstract Mn(II)‐based halides have recently garnered significant interest as emerging luminescence materials for diverse photonic applications. Generally, Mn(II) hybrids with tetrahedral coordination show green emission, however, ones octahedral give red emission. Herein, we design the synthesis of pseudohalide hybrids, (RPh 3 P) 2 MnBr x NCS 4−x (R=phenyl, pentyl or methyl; Ph P=triphenylphosphine; =1–3), achieved by gradually substituting bromides pseudohalides (NCS − ). Compared to green‐emitting A 4 (512 nm), mixed exhibit significantly distorted [MnBr 4−X ] tetrahedra high dipole moment, thus leading distinct Stokes shift energies and noticeable emission in range 549–613 nm. Furthermore, photoluminescence quantum yield (PLQY) these correlates strongly pair correlation function ions, specifically Mn⋅⋅⋅Mn distance. These findings highlight critical role moments determining properties expand luminescent family hybrids.

Язык: Английский

---