Dimension-Tunable Circularly Polarized Luminescent Nanoassemblies with Emerging Selective Chirality and Energy Transfer

Ji, Lukang; Zhao, Yang; Tao, Min; Wang, Hanxiao; Niu, Dian; Ouyang, Guanghui; Xia, Andong; Liu, Minghua

doi:10.1021/acsnano.9b09584

Cited by 60 publications

(44 citation statements)

References 94 publications

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“…[111] In recent years, a variety of cases based on supramolecular assembly method have emerged. [65,67,[112][113][114][115][116][117][118] For instance, chiroptical interaction of achiral thioflavin T bound to chiral insulin amyloid fibrils has been evidenced by CD and CPL for the first time. [119] Feng's group published a paper that using chiral phenylalanine-based gelator and achiral coumarin-based emitters could form supramolecular assemblies with unique CPL properties.…”

Section: Supramolecular Assembly Materialsmentioning

confidence: 99%

Circularly polarized luminescence of agglomerate emitters

et al. 2021

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Circularly polarized luminescence (CPL) originates from the chiral emissive excited states. CPL materials have promising applications in 3D optical displays, encryptions, biological probes, chiral photoelectric devices, and CPL switches, most of which require excellent CPL performances including bright luminescence and high luminescence dissymmetry factor (g lum ) in the agglomerate state. This review systematically summarizes the progress about CPL of aggregate and solid materials, such as organic materials, metal-organic materials (such as coordination polymers, organic-inorganic metal halides, metal clusters, and cluster-assembled materials), the assembled materials by supramolecular interactions, and liquid crystals. We also present the current challenges and a future perspective of chiral emitting agglomerate materials.

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Section: Supramolecular Assembly Materialsmentioning

confidence: 99%

Circularly polarized luminescence of agglomerate emitters

et al. 2021

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“…Chiral functional materials with circularly polarized luminescence (CPL) performance are drawing enormous attention in multidisciplinary fields for their potential applications in 3D optical displays, optical identification sensors, spintronics, optical storage devices, etc. [ 1–11 ] In the past few years, with the deepening of cross‐disciplinary research and rapid development of precision instruments, numerous CPL‐active materials based on organic small molecules, [ 12–15 ] polymers, [ 16–19 ] supramolecular self‐assemblies, [ 20–24 ] lanthanide complexes, [ 25,26 ] and liquid crystals [ 27–29 ] have been exploited. For CPL‐active materials, luminescence dissymmetry factor ( g lum ) is a critical parameter for judging the material performance, [ 30 ] in which the maximum | g lum | value is 2 when absolutely left‐handed or right‐handed CPL emission is generated.…”

Section: Introductionmentioning

confidence: 99%

Color‐Tunable Circularly Polarized Luminescence with Helical Polyacetylenes as Fluorescence Converters

Zhao

Gao

Lü

et al. 2020

Advanced Optical Materials

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parameter for judging the material performance, [30] in which the maximum |g lum | value is 2 when absolutely left-handed or right-handed CPL emission is generated. Nevertheless, the |g lum | values of most reported CPL-active materials are mainly located between 10 −5 and 10 −2 , which are far from our expectation and cannot satisfy the demands for future applications. On the other hand, it is well-acknowledged that multicolor emissions especially RGB colors are important in display technology. Therefore, in consideration of the demands in practical applications, constructing CPL-active materials with both color-tunable emissions and high g lum values is of great significance. In the previous study, we have reported that chiral polyacetylenes with helical structures are good candidates for constructing CPL-active materials with high g lum values up to 10 −1. [31] Subsequently, we found that chiral helical polyacetylenes could serve as handedness-selective fluorescence filters to powerfully transform unpolarized fluorescent light into CPL emission. [32] Following this strategy, full-color and white-color CPL-active materials were easily constructed by combining chiral helical polyacetylenes with achiral fluorescence dyes. [32,33] Based on the above investigations, the relationship between helical structures and light shows unique charm and deserves more attention. The importance of such direction is more clearly demonstrated when considering the widespread helical structures and circularly polarized light in nature and living organisms. [34-38] In this contribution, we report our success in fabricating color-tunable CPL emissions by taking helical polyacetylenes as fluorescence converters. When blue-color circularly polarized light passes through the helical polyacetylenes with different conjugated lengths, multicolor CPL emissions of cyan, green, and orange are obtained, with high g lum values in the range of 10 −2-10 −1. It should be pointed out that, in spite of some publications concerning multicolor CPL materials reported by our group and others, [32,33,39-42] the multicolor CPLs therein are mainly realized from various fluorescent substances with different emission wavelength. In the present study, however, color-tunable CPL emissions are conveniently achieved from a single fluorescence substance, merely by tuning the conjugated length of helical polyacetylenes with commercial organic solvents. In particular notably, neither any covalent nor noncovalent interaction is required during the CPL color-tuning process, demonstrating the universality and superiority of the strategy established in the present work. Circularly polarized luminescence (CPL) materials are currently drawing rapidly increasing interest. However, constructing color-tunable CPL materials is still a big challenge, primarily due to the lack of simple, powerful, and universal preparation strategies. In this contribution, color-tunable CPL emissions are easily realized by taking helical polyacetylenes as fluorescence converters. The investigat...

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“…[ 16,17 ] CPL signals could directly reveal the microstructure information of the excited state of chiral dyes and offer an effective detection method to fully investigate the mechanism of chirality generation, transfer and amplification effect. Generally, small chiral metal‐containing complexes, [ 18–20 ] chiral polymers, [ 21–23 ] and organic small molecules [ 24–27 ] as CPL‐active materials have been successfully chosen as CPL emitters. However, g em values of most chiral organic dyes are in the range of 10 −5 –10 −2 , which are too low to realize the real application.…”

Section: Methodsmentioning

confidence: 99%

Strong‐Induced CPL Emission Promoted from Achiral Conjugated Polymer‐Containing Emissive Nematic Liquid Crystals (P‐N*‐LCs)

Chen

et al. 2020

Macromol. Rapid Commun.

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With the rapid development on 3D printing technology, more and more works have been devoted to 3D display. 3D display will really come true by using circularly polarized luminescence (CPL)‐active materials with both high quantum yield and dissymmetry factor (gem) in organic light‐emitting diode or liquid crystals (LCs). But so far most of these CPL materials cannot meet the real application requirement because of the low gem values in the range of 10−5–10−2. In this paper, ternary chiral emissive LCs (P‐N*‐LCs) is designed by doping chiral binaphthyl‐based enantiomers as chiral dopant (Guest 1) and achiral conjugated polymer as induced CPL emitter (Guest 2) into nematic liquid crystal (N‐LCs) Host 5CB. Both Guest 1 and Guest 2 show excellent compatibility with Host 5CB. The obtained ternary P‐N*‐LCs can emit strong‐induced CPL signal with gem up to 1.12 and ФFL up to 66.1%. This work first develops a new strategy for the smart design of excellent CPL materials from versatile achiral conjugation fluorescence polymers.

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Dimension-Tunable Circularly Polarized Luminescent Nanoassemblies with Emerging Selective Chirality and Energy Transfer

Cited by 60 publications

References 94 publications

Circularly polarized luminescence of agglomerate emitters

Circularly polarized luminescence of agglomerate emitters

Color‐Tunable Circularly Polarized Luminescence with Helical Polyacetylenes as Fluorescence Converters

Strong‐Induced CPL Emission Promoted from Achiral Conjugated Polymer‐Containing Emissive Nematic Liquid Crystals (P‐N*‐LCs)

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