Multistimuli Responsive Behaviors of Salicylaldehyde Hydrazone Zn(II) Complexes in Solution, Solid State, and PMMA Film DOI

Han–Wen Zheng,

Min Wu,

Su-Jia Liu

et al.

Crystal Growth & Design, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Zn(II) complexes based on salicylaldehyde hydrazone ligands have emerged as a promising class of stimuli-responsive luminescent materials. Herein, three complexes, namely, [Zn2(HL1)2(py)2]·H2O (1a), Zn2(HL1)2(py)2 (1b), and Zn2(HL2)2(py)2 (2), were synthesized by self-assembly with under solvothermal conditions. Complexes 1a 2 exhibit reversible mechanochromic luminescence (MCL) during grinding fuming processes due to the transformation between crystalline phase amorphous phase. In addition, slight induces crystal from 1b. Comprehensive structural analysis experimental results indicate that may destroy coordination bond, leading dissociation pyridine molecule metal center. Besides, existence weak interaction molecules is easy upon external mechanical force, resulting in MCL high contrast. Moreover, DMSO solutions both turn yellow colorless accompanied quenching after irradiating white light. shows photochromism switching light 365 nm UV illumination short response time, while prolonged irreversible response, potentially attributed steric hindrance effects. However, complex exhibits more obvious photochromic property solid state than 1a. Its color changes brown irradiation light, formation radicals generated photoinduced electron transfer hydroxyl oxygen atom coordinating molecule. The PMMA film also stimuli or These exhibiting properties, demonstrate significant potential advanced multistimuli responsive materials for various applications.

Language: Английский

Circularly Polarized Luminescence Inversion in AIE‐Active Crystal Enabled by Solvent‐Induced Transition Dipole Moment Regulation DOI Creative Commons

Xiaofei Niu,

Xinwen Ou,

Shizhe Ren

et al.

Aggregate, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 4, 2025

ABSTRACT Control of the dissymmetry circularly polarized luminescence (CPL) is intriguing and has great potential for applications in field optics. The traditional control strategy involves using opposite enantiomers to achieve reversal CPL signs. However, regulating by controlling only transition dipole moments without changing molecular or supramolecular chirality remains a challenge. Herein, we developed couple crystal materials based on axially chiral aggregation‐induced emission luminogens (AIEgens). These exhibit achiral solvent‐induced sign inversion with identical helical structures their crystalline states. ( R )‐BPAuCz T displays (+)‐CPL factor g lum ) value +9.81 × 10 −4 (560 nm), while C exhibits (−)‐CPL −1.02 −3 nm). Time‐dependent density functional theory calculations show that magnetic electric at S 1 → 0 unit cell are considerably influenced cocrystallized solvent molecules, revealing mechanism. nonbonding interactions between molecules (i.e., tetrahydrofuran CDCl 3 AIEgens play crucial role manipulation moment these materials. Moreover, microrods , DCE optical waveguide properties relatively low optical‐loss coefficients 187.3, 567.4, 65.2 dB/cm, respectively. findings can help developing new toward signals providing application future integrated photonic circuits.

Language: Английский

Citations

0
Interactive chirality transfer between chiral phosphor and achiral polyacetylene for constructing multi-color circularly polarized room temperature phosphorescence DOI
Kai Yang,

Xinhui Gao,

Xujie Wang

et al.

Next Materials, Journal Year: 2025, Volume and Issue: 8, P. 100558 - 100558

Published: Feb. 26, 2025

Language: Английский

Citations

0
Multistimuli Responsive Behaviors of Salicylaldehyde Hydrazone Zn(II) Complexes in Solution, Solid State, and PMMA Film DOI

Han–Wen Zheng,

Min Wu,

Su-Jia Liu

et al.

Crystal Growth & Design, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Zn(II) complexes based on salicylaldehyde hydrazone ligands have emerged as a promising class of stimuli-responsive luminescent materials. Herein, three complexes, namely, [Zn2(HL1)2(py)2]·H2O (1a), Zn2(HL1)2(py)2 (1b), and Zn2(HL2)2(py)2 (2), were synthesized by self-assembly with under solvothermal conditions. Complexes 1a 2 exhibit reversible mechanochromic luminescence (MCL) during grinding fuming processes due to the transformation between crystalline phase amorphous phase. In addition, slight induces crystal from 1b. Comprehensive structural analysis experimental results indicate that may destroy coordination bond, leading dissociation pyridine molecule metal center. Besides, existence weak interaction molecules is easy upon external mechanical force, resulting in MCL high contrast. Moreover, DMSO solutions both turn yellow colorless accompanied quenching after irradiating white light. shows photochromism switching light 365 nm UV illumination short response time, while prolonged irreversible response, potentially attributed steric hindrance effects. However, complex exhibits more obvious photochromic property solid state than 1a. Its color changes brown irradiation light, formation radicals generated photoinduced electron transfer hydroxyl oxygen atom coordinating molecule. The PMMA film also stimuli or These exhibiting properties, demonstrate significant potential advanced multistimuli responsive materials for various applications.

Language: Английский

Citations

0