The Progress and Perspective of Organic Molecules With Switchable Circularly Polarized Luminescence

Gao, Yang; Ren, Can; Lin, Xiaodong; He, Tiancheng

doi:10.3389/fchem.2020.00458

Cited by 58 publications

(32 citation statements)

References 46 publications

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“…Laser induced periodical structures (LIPSS) are self-organized structures commonly found when laser irradiation on material surfaces is concerned. Previous studies have found them on a variety of materials, covering metal, semiconductors, and dielectrics (Wang et al, 2017;Ahsan et al, 2020;Gao et al, 2020;Yang et al, 2020). LIPSS are usually ripple-like periodical structures with a spatial period close to or smaller than the wavelength λ of incident lasers.…”

Section: Laser Induced Periodical Surface Structures (Lipss)mentioning

confidence: 99%

Bioinspired Superhydrophobic Surfaces via Laser-Structuring

Liu

et al. 2020

Front. Chem.

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Bioinspired superhydrophobic surfaces are an artificial functional surface that mainly extracts morphological designs from natural organisms. In both laboratory research and industry, there is a need to develop ways of giving large-area surfaces water repellence. Currently, surface modification methods are subject to many challenging requirements such as a need for chemical-free treatment or high surface roughness. Laser micro-nanofabrications are a potential way of addressing these challenges, as they involve non-contact processing and outstanding patterning ability. This review briefly discusses multiple laser patterning methods, which could be used for surface structuring toward creating superhydrophobic surfaces.

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Section: Laser Induced Periodical Surface Structures (Lipss)mentioning

confidence: 99%

Bioinspired Superhydrophobic Surfaces via Laser-Structuring

Liu

et al. 2020

Front. Chem.

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“…[ 20–26 ] One method for developing photoresponsive CPL switches involves covalently combining photochromic molecules with a chiral moiety. [ 27–30 ] Unfortunately, CPL activity cannot be reliably obtained in this manner because the chromophores are far from the chiral moiety. To address this challenge, supramolecular self‐assembly has been extensively demonstrated to be an efficient approach for amplifying the circular polarization of CPL emission.…”

Section: Introductionmentioning

confidence: 99%

Multi‐Light‐Responsive Upconversion‐and‐Downshifting‐Based Circularly Polarized Luminescent Switches in Chiral Metal–Organic Frameworks

et al. 2021

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Metal–organic frameworks (MOFs) have attracted tremendous attention for several novel applications. However, functional MOFs with light‐responsive circularly polarized luminescence (CPL) are not examined in detail. Therefore, a dual CPL switch exhibiting both upconversion (UC) and downshifting (DS) CPL in the solid state is constructed by loading a luminescent diarylethene derivative (DAEC) and UC nanoparticles (UCNPs) into chiral MOFs. The chiral MOF⊃DAEC composites exhibit both photoswitchable luminescence and DS‐CPL properties under alternating UV and visible light irradiation. Additionally, a reversible UC‐CPL switch is realized using near‐infrared (NIR) and visible light irradiation by introducing energy‐level‐matched UCNPs and DAEC into the chiral MOFs. The dissymmetry factor (glum) of UC‐CPL is noted to be significantly amplified through energy transfer compared to that of DS‐CPL, which indicates that the information on circular polarization can be manipulated by altering the incident light. A chiroptical logic circuit with a 2D information output is designed with UV, visible, and NIR light as inputs by setting a rational threshold.

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“…Therefore, these advanced technologies aid the in-depth understanding of structure-functionality relationships, which guide the development of new chiral functional materials. 14,19,[21][22][23][24][25] However, most natural chiral molecules do not exhibit strong optical rotational effects or fluorescent groups. For examples, amino acids, carbohydrates, and nucleotides cannot be easily detected by CD or CPL due to their weak Cotton effect.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Chirality of an Achiral Cage: Chirality Transfer, Induction, and Circularly Polarized Luminescence through Aqueous Host–Guest Complexation

Lin

Duan

et al. 2021

CCS Chem

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Chirality transfer, induction, and circularly polarized luminescence (CPL) using supramolecular hosts, such as macrocycles and cages, have been explored for wide-ranging applications in chiral recognition, sensing, catalysis, and chiroptical functional materials. Herein, we report the adaptive chirality of an achiral tetraphenylethene (TPE)-based octacationic cage (1) induced by binding with enantiopure deoxynucleotides (A, T, C, and G) through host-guest (H-G) complexation inwater. The hydrophobic cavity of the cage efficiently stabilizes the hydrogen-bonded dimerization of deoxynucleotides (A 2 , T 2 , C 2 , and G 2 ) to form H-G complexes in 1∶2 ratios. Given the photophysical properties and dynamic rotational conformation of the TPE units of the cage, cage⊃ deoxynucleotide complexes exhibited excellent chiroptical properties based on chirality transfer and induction from the chiral guest to the achiral host. For this supramolecular system, the cage showed a unique adaptive chirality of the double clockwise-typed (PP) rotational conformation of the two TPE units, which was induced by chiral guests (e.g., A 2 , T 2 , C 2 , and G 2 ) through H-G complexation in water. Furthermore, the adaptive chirality of the cage⊃deoxynucleotide complexes successfully induced CPL signals in homogeneous aqueous solutions. This study provides insights for the construction of adaptive chirality from an achiral TPE-based octacationic cage with dynamic conformational nature, and might facilitate further design of chiral functional materials for several applications, such as chiral recognition, sensing, displays, catalysis, and other chiral fluorescent supramolecular systems based on aqueous H-G complexation.

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The Progress and Perspective of Organic Molecules With Switchable Circularly Polarized Luminescence

Cited by 58 publications

References 46 publications

Bioinspired Superhydrophobic Surfaces via Laser-Structuring

Bioinspired Superhydrophobic Surfaces via Laser-Structuring

Multi‐Light‐Responsive Upconversion‐and‐Downshifting‐Based Circularly Polarized Luminescent Switches in Chiral Metal–Organic Frameworks

Adaptive Chirality of an Achiral Cage: Chirality Transfer, Induction, and Circularly Polarized Luminescence through Aqueous Host–Guest Complexation

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