Nonclassical dual control of circularly polarized luminescence modes of binaphthyl–pyrene organic fluorophores in fluidic and glassy media

Nakabayashi, Kazuki; Amako, Tomoyuki; Tajima, Nobuo; Fujiki, Michiya; Imai, Yoshitane

doi:10.1039/c4cc02946a

Cited by 81 publications

(30 citation statements)

References 28 publications

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“…Unlike the chiral small organic molecules, polymers generally offer the potential to amplify chiroptical properties and even alter the sign (right or left) of the CPL . Meanwhile, owing to the advantages of good film formation, 3D‐stacking capability, and excellent scalability and flexibility, polymer‐based optoelectronic devices with strong polarized luminescence have been a promising alternative choice to chiral small organic molecules, and attracted great interest as a new and potential research field.…”

Section: Conjugated Polymersmentioning

confidence: 99%

Recent Progress on Circularly Polarized Luminescent Materials for Organic Optoelectronic Devices

Han

Guo

et al. 2018

Advanced Optical Materials

577

346

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Due to the characteristics of optical rotation, selective emission of polarized light, and circular dichroism, circularly polarized luminescent materials have aroused extensive attentions, and they have exhibited wide optoelectronic applications, such as optical data storage, liquid crystal display, and backlights in 3D displays. Here, the research progress of circularly polarized luminescent materials for organic optoelectronic devices is summarized. First, the definition and measurement of the circularly polarized light, such as optical rotatory dispersion, circular dichroism, and circularly polarized luminescence, are systematically introduced. Subsequently, the design strategies for various kinds of circularly polarized luminescent materials, including luminescent lanthanide and transition‐metal complexes, small organic luminophores, conjugated polymers, supramolecules, and liquid crystals are summarized. These materials exhibit circularly polarized luminescence with different magnitudes of luminescence dissymmetry values (glum). They are further applied in optoelectronic devices with excellent performance, and the influence factors on the glum values of these materials are presented in detail. Finally, the current opportunities and challenges in this rapidly growing research field are discussed systematically. The circularly polarized luminescent materials with large glum and high luminescence efficiency are very promising for applications in organic optoelectronic fields.

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Section: Conjugated Polymersmentioning

confidence: 99%

Recent Progress on Circularly Polarized Luminescent Materials for Organic Optoelectronic Devices

Han

Guo

et al. 2018

Advanced Optical Materials

577

346

View full text Add to dashboard Cite

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“…Similar to supramolecular systems, polymers offer the potential to amplify chiroptical properties and even alter the sign of the CPL. [30] To the best of our knowledge, the first reported AIE-active polymer showing CPL was reported small 2016, 12, No. 47, 6495-6512 in 2013 by Cheng and coworkers (Figure 8).…”

Section: Polymersmentioning

confidence: 99%

Circularly‐Polarized Luminescence (CPL) from Chiral AIE Molecules and Macrostructures

Roose

Tang

Wong

2016

Small

270

145

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Circularly-polarized luminescence (CPL) has received new attention on the rise of applications to generate devices and biologically active probes. These applications require fluorophores that are not only chiral but also provide strong fluorescence intensity in aggregated state. Thus, a new research branch has opened up a few years ago, which allows CPL-active fluorophores to be emissive in aggregated-state. As a result, reports on the combination of the CPL property with the aggregation-induced emission (AIE) phenomenon have emerged. Herein the early design principles that have been reported until now to generate CPL-active AIE-active fluorophores (AIEgens) are summarized. In this regard the alignment of monomeric emitters in a chiral fashion, either in supramolecules, polymers or liquid crystals has been proven to be a successful approach. Additionally, first reports have appeared that demonstrate how to tackle the daunting task to furnish individual CPL-active AIEgens.

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“…By utilizing this property, it is possible to achieve CPL switching by controlling the emission modes of pyrene. An interesting example is exemplified by the chiral binaphthyl‐crown ether‐bispyrene 1 , the λ CPL and CPL signs of which could be controlled by changing from a fluidic chloroform solution to a glassy poly(methyl methacrylate) solid film (Figure a) . Although the fluorescent reference compound binaphthyl‐crown ether‐pyrene 2 with one pyrene unit did not exhibit any detectable CPL signals both in a CHCl 3 solution and in a PMMA film, bispyrene 1 exhibited clear CPL signals in a CHCl 3 solution and in a PMMA film.…”

Section: Cpl Switching By Promoting the Excimer Formationmentioning

confidence: 99%

“…[18] Most of the relatedr eports have been well summarized by Maeda in 2013. [14] In addition to the assembly structure, other factors, such as excimer formation, [19][20][21][22][23][24] conformation of monomeric fluorophores, [25][26][27][28][29][30][31] electronic nature of p-conjugated skeleton or peripherals ubstituent, [32][33][34][35] and intramolecular charge-transfer (CT) dynamics, [36] maya lso exhibits significant influences on the CPL properties. Our discussion will focus on the strategies to tune the factors that influence CPL properties, which is expected to complementw ell the recent review about polymers and SOMs displayings timuli-responsive CPL.…”

Section: Introductionmentioning

confidence: 99%

Circularly Polarized Luminescence Switching in Small Organic Molecules

Peng

Zhao

2019

Chemistry A European J

185

110

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The circularly polarized luminescence (CPL) switching is of significant interest for applications in security technologies and sensing devices. Small organic molecules (SOMs) show severala dvantages over metal complexes, supramolecular assemblies, and polymers. Therefore, the recent progress on the CPL switching in SOMs is here reviewed. The resultsa re summarized based on the strategies used to tune factors that influence the emission properties, and thus, to realize CPL switching. The strategies that have been adopted include promoting the excimer formation of fluorescent units, changing the conformation of fluorophores,t uning the electronic structure of the p-skeleton/ substituent, and modulating the intramolecular chargetransfer dynamics.[a] J.

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Nonclassical dual control of circularly polarized luminescence modes of binaphthyl–pyrene organic fluorophores in fluidic and glassy media

Abstract: The fluorescent modes and signs of the circularly polarized luminescence of an axially chiral binaphthyl-pyrene organic fluorophore were successfully controlled by changing from a fluidic chloroform solution to a glassy poly(methyl methacrylate) solid film.

Cited by 81 publications

References 28 publications

Recent Progress on Circularly Polarized Luminescent Materials for Organic Optoelectronic Devices

Recent Progress on Circularly Polarized Luminescent Materials for Organic Optoelectronic Devices

Circularly‐Polarized Luminescence (CPL) from Chiral AIE Molecules and Macrostructures

Circularly Polarized Luminescence Switching in Small Organic Molecules

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