Circularly Polarized Luminescence Induced by Hydrogen‐Bonding Networks in a One‐Dimensional Hybrid Manganese(II) Chloride

Li, Jing; Luo, Qiulian; Wei, Jianwu; Zhou, Liya; Chen, Peican; Luo, Binbin; Chen, Yibo; Pang, Qi; Zhang, Jin Zhong

doi:10.1002/anie.202405310

Cited by 11 publications

(1 citation statement)

References 58 publications

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“…As a kind of ionic compound, metal halide hybrids (MHHs) mainly consist of organic cations and metal halide polyhedra anions. Due to their wide composition and structure tunability, easy preparation, and excellent optical properties, MHHs have been attracted enormous attention in optoelectronic fields including X-ray scintillator, − solid-state lighting, − anticounterfeiting, − information encryption, and stimulus response. , Recently, [2 + 2] photocycloaddition was successfully employed to control the room-temperature phosphorescence switch and photochromism in zero-dimensional (0D) bibased MHHs . Endowing MHHs with reversible photochromism could significantly broaden their applications in fields such as high-level-security information encryption and optical data storage.…”

Section: Introductionmentioning

confidence: 99%

Photocycloaddition of Zero-Dimensional Metal Halide Hybrids with Reversible Photochromism

Liu,

Chen,

Xiao

et al. 2024

ACS Appl. Mater. Interfaces

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In this work, two zero-dimensional (0D) metal halide hybrids L 2 ZnBr 4 [1, L = (E)-4-(2-(1H-pyrrol-3-yl)vinyl)-1-methylpyridin-1-ium] and L 6 Pb 3 Br 12 (2) were prepared, which demonstrated photochromism and photoinduced cracking. Upon irradiation at 450 nm, a single crystal-to-single crystal transformation occurred as a result of the [2 + 2] photocycloaddition of L. Interestingly, compared to the complete photocycloaddition of L in 1, only two-thirds of L monomers could be photodimerized in 2 because of the difference in L orientation. 1 shows reversible photochromic behavior including rapid response time, few cracks, high conversion rate, and good reaction reversibility, while 2 exhibits no significant color change but distinct photoinduced cracking because of the large local lattice strain induced by inhomogeneous and anisotropic deformation. Moreover, the photocycloaddition of L results in the distinct shift of photoluminescence of 1 and 2, attributed to the variation in conjugation of π electrons and distortion of metal halide clusters. As a proof-ofconcept, reversible optical writing is demonstrated for 1. These findings provide new insights into the design of stimuli-responsive multifunctional materials.

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Section: Introductionmentioning

confidence: 99%

Photocycloaddition of Zero-Dimensional Metal Halide Hybrids with Reversible Photochromism

Liu,

Chen,

Xiao

et al. 2024

ACS Appl. Mater. Interfaces

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Unlocking the Potential of Organic‐Inorganic Hybrid Manganese Halides for Advanced Optoelectronic Applications

Zhang,

Zheng,

et al. 2024

Advanced Materials

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Organic‐inorganic hybrid manganese(II) halides (OIMnHs) have garnered tremendous interest across a wide array of research fields owing to their outstanding optical properties, abundant structural diversity, low‐cost solution processibility, and low toxicity, which make them extremely suitable for use as a new class of luminescent materials for various optoelectronic applications. Over the past years, a plethora of OIMnHs with different structural dimensionalities and multifunctionalities such as efficient photoluminescence (PL), radioluminescence, circularly polarized luminescence, and mechanoluminescence have been newly created by judicious screening of the organic cations and inorganic Mn(II) polyhedra. Specifically, through precise molecular and structural engineering, a series of OIMnHs with near‐unity PL quantum yields, high anti‐thermal quenching properties, and excellent stability in harsh conditions have been devised and explored for applications in light‐emitting diodes (LEDs), X‐ray scintillators, multimodal anti‐counterfeiting, and fluorescent sensing. In this review, the latest advancements in the development of OIMnHs as efficient light‐emitting materials are summarized, which covers from their fundamental physicochemical properties to advanced optoelectronic applications, with an emphasis on the structural and functionality design especially for LEDs and X‐ray detection and imaging. Current challenges and future efforts to unlock the potentials of these promising materials are also envisioned.

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Outstanding Circularly Polarized TADF in Chiral Cu(I) Emitters: From Design to Application in CP‐TADF OLEDs

Petyuk,

Meng,

et al. 2024

Angewandte Chemie

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Low‐cost molecular emitters that merge circularly polarized luminescence (CPL) and thermally activated delayed fluorescence (TADF) properties are attractive for many high‐tech applications. However, the design of such emitters remains a difficult task. To address this challenge, here, we propose a simple and efficient strategy, demonstrated by the design of pseudochiral‐at‐metal complexes [Cu(L*)DPEPhos]PF6 bearing a (+)/(−)‐menthol‐derived 1,10‐phenanthroline ligand (L*). These complexes exhibit a yellow CP‐TADF with a record‐high quantum yield (close to 100 %) and high dissymmetry factor (|glum|~1×10−2). Remarkably, the above compounds also show a negative thermal‐quenching (NTQ) of luminescence in the 300–77 K range. Exploiting the designed Cu(I) emitters, we fabricated efficient CP‐TADF OLEDs displaying mirror‐imaged CPL bands with high |gEL| factors of 1.5×10−2 and the maximum EQE of 6.15 %. Equally important, using the (+)‐[Cu(L*)DPEPhos]PF6 complex, we have discovered that an external magnetic field noticeably suppresses CP‐TADF of Cu(I) emitters. These findings are an important contribution to the CPL phenomenon and provide access to highly efficient, low‐cost and robust CP‐TADF emitters.

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Circularly Polarized Luminescence Induced by Hydrogen‐Bonding Networks in a One‐Dimensional Hybrid Manganese(II) Chloride

Cited by 11 publications

References 58 publications

Photocycloaddition of Zero-Dimensional Metal Halide Hybrids with Reversible Photochromism

Photocycloaddition of Zero-Dimensional Metal Halide Hybrids with Reversible Photochromism

Unlocking the Potential of Organic‐Inorganic Hybrid Manganese Halides for Advanced Optoelectronic Applications

Outstanding Circularly Polarized TADF in Chiral Cu(I) Emitters: From Design to Application in CP‐TADF OLEDs

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