Progress in optical properties of chiral metal clusters: circular dichroism and circularly polarized luminescence

Zhou, Bo-Wei; Zhang, Siqi; Zhao, Liang

doi:10.1039/d3qm00747b

Cited by 8 publications

(3 citation statements)

References 130 publications

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“…11−13 In addition, the intermolecular interactions also play a significant part in chiral induction as well as chiral amplification induced by the aggregation process of clusters. 14 Zang and co-workers reported a pair of alkynylprotected chiral copper(I) clusters, [Cu 14 (R/S-DPM) 8 ](PF 6 ) 6 , which feature strong circularly polarized luminescence (CPL) emission triggered by the aggregation-induced emission effect. 15 The Zhu group reported a pair of chiral Au 9 Ag 4 metal nanocluster enantiomers and achieved the integration of optical activity and circularly polarized electrochemiluminescence (ECL).…”

Section: ■ Introductionmentioning

confidence: 99%

“…Chiral metal organic/oxo clusters (cMOCs) can be regarded as bridges connecting individual microscopic chiral molecules with the macroscopic structures of chiral materials. Due to their unique electronic structures and interactions, the comprehensive performance, including thermostability, photostability, and stimuli-responsive performance, can be further enhanced by forming cluster-assembled materials. − In addition, the intermolecular interactions also play a significant part in chiral induction as well as chiral amplification induced by the aggregation process of clusters . Zang and co-workers reported a pair of alkynyl-protected chiral copper(I) clusters, [Cu 14 ( R / S -DPM) 8 ](PF 6 ) 6 , which feature strong circularly polarized luminescence (CPL) emission triggered by the aggregation-induced emission effect .…”

Section: Introductionmentioning

confidence: 99%

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Assembly of Homochiral Aluminum Oxo Clusters for Circularly Polarized Luminescence

Chen,

Wang,

Liu

et al. 2024

J. Am. Chem. Soc.

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Chiral aluminum oxo clusters (cAlOCs) are distinguished from other classes of materials on account of their abundance in the earth's crust and their potential for sustainable development. However, the practical synthesis of cAlOCs is rarely known. Herein, we adopt a synergistic coordination strategy by using chiral amino acid ligands as bridges and auxiliary pyridine-2,6dicarboxylic acid as chelating ligands and successfully isolate an extensive family of cAlOCs. They integrate molecular chirality, absolute helicity, and intrinsic hydrogen-bonded chiral topology. Moreover, they have the structural characteristics of onedimensional channels and replaceable counteranions, which make them well combined with fluorescent dyes for circularly polarized luminescence (CPL). The absolute luminescence dissymmetry factor (g lum ) of up to the 10 −3 order is comparable to several noble metals, revealing the enormous potential of cAlOCs in low-cost chiral materials. We hope this work will inspire new discoveries in the field of chirality and provide new opportunities for constructing low-cost chiral materials.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assembly of Homochiral Aluminum Oxo Clusters for Circularly Polarized Luminescence

Chen,

Wang,

Liu

et al. 2024

J. Am. Chem. Soc.

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“…6–8 Ideal CPL materials have the characteristics of large asymmetry factors ( g PL ) and high luminescence quantum yields. In recent years, scientists have made great efforts for the development of various chiral luminescent materials, 9–15 including chiral conjugated polymers, chiral transition metal complexes, and chiral TADF materials. Among them, chiral transition metal coordination phosphors simultaneously utilize singlet and triplet excitons, theoretically achieving an internal quantum efficiency (IQE) of 100%.…”

Section: Introductionmentioning

confidence: 99%

Narrow-band circularly polarized red electroluminescence in trinuclear clusters

Yang,

Cheng,

Shi

et al. 2024

Inorg. Chem. Front.

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A Multiple Circularly Polarized Luminescence Regulation Platform Driven by Acid, Base, and Primary Amines

Li,

Yang,

Shi

et al. 2024

Advanced Optical Materials

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Functional materials that exhibit circularly polarized luminescence (CPL) have shown immense potential in applications such as 3D optical displays and advanced information encryption. However, facile and efficient regulation of the multiple emission properties in chiral systems has remained a challenge due to the scarcity of suitable materials and the complexity of the systems. Herein, a multiple CPL regulation platform is fabricated by the helical co‐assembly of an aldehyde‐functionalized fluorane dye (Rhodol‐CHO, 6′‐(diethylamino)‐3′‐hydroxy‐3‐oxo‐3H‐spiro[isobenzofuran‐1,9′‐xanthene]‐4′‐carbaldehyde) and chiral liquid crystals, which can efficiently combine multiple stimuli‐responsive characteristics and high optical activity. By introducing acid, base, and compounds containing primary amino (─NH2) groups, the CPL property of the system can be easily modified. The obtained CPL systems exhibit apparent asymmetry, with glum values reaching 0.54–0.75). Further, these CPL modules are successfully applied in multi‐mode information encryption, highlighting their practical utility. Therefore, this study presents a novel strategy for developing materials with diverse CPL behaviors based on a simple‐designed platform, advancing further applications of CPL materials.

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Progress in optical properties of chiral metal clusters: circular dichroism and circularly polarized luminescence

Abstract: The design of metal cluster-based materials possessing exceptional circular dichroism (CD) and circularly polarized luminescence (CPL) performance has garnered significant attention due to their promising applications in 3D display, photoelectric...

Cited by 8 publications

References 130 publications

Assembly of Homochiral Aluminum Oxo Clusters for Circularly Polarized Luminescence

Assembly of Homochiral Aluminum Oxo Clusters for Circularly Polarized Luminescence

Narrow-band circularly polarized red electroluminescence in trinuclear clusters

A Multiple Circularly Polarized Luminescence Regulation Platform Driven by Acid, Base, and Primary Amines

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