Wavelength-tunable linearly polarized luminescence film constructed using a highly efficient luminescent liquid crystal with stimuli-responsive property

Tao, Lei; Lan, Kai; Zhong, Cheng-Long; Zhou, Yingjie; Wang, Ping; Fan, Fan; Shen, Zhihao; Xie, He‐Lou

doi:10.1039/d0tc04406g

Cited by 18 publications

(14 citation statements)

References 52 publications

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“…The development of stimuli-responsive organic fluorescent materials has received tremendous attention as a result of their fundamental research and promising applications in information storage, 1,2 anti-counterfeiting paper, 3,4 sensors [5][6][7] and bioimaging. [8][9][10] In particular, mechanochromic (MC) materials that use mechanical force as a stimulus have been recognized as ideal candidates for preparing anti-counterfeiting labels and pressure-sensitive devices.…”

Section: Introductionmentioning

confidence: 99%

Design of High-Contrast Mechanochromic Materials Based on Aggregation-Induced Emissive Pyran Derivatives Guided by Polymorph Predictions

Wen

Xiao

et al. 2022

CCS Chem

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High contrast mechanochromic materials are prominent candidates for sensor, security and memory applications; however, the development of materials with a large luminescence change (Δλ em >100 nm) under external stimuli is challenging. Considering that polymorphic molecules usually exhibit reversible mechanochromism, polymorph prediction is adopted for the first time to guide the design of high-contrast mechanochromic materials in this study. We designed and synthesized a series of donor-π-acceptor pyran derivatives bearing different electron donors and acceptors as model systems. The polymorph prediction indicated that 4-dicyanomethylene-2,6-distyryl-4H-pyran and 4H-pyran-4-one derivatives had the potential to crystallize in both monomer and π-dimer aggregates, while barbituric acid-based compound tended to pack tightly in all aggregated states. The experimental results agreed well with the prediction that the derivatives potentially possessing both monomer and π-dimer aggregate structures exhibit excellent mechanochromic behavior, whereas the fluorescence difference for the barbituric acid-based compounds is minimal. Moreover, a compound with an excellent fluorescence difference of three colors during reversible mechanochromism was chosen as the candidate for an optical recording material and security ink. This work proposes an effective

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Section: Introductionmentioning

confidence: 99%

Design of High-Contrast Mechanochromic Materials Based on Aggregation-Induced Emissive Pyran Derivatives Guided by Polymorph Predictions

Wen

Xiao

et al. 2022

CCS Chem

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“…[ 28–30 ] As a result, it has the potential to be widely used in a variety of disciplines such as anticounterfeiting, information encryption, and wearable devices. [ 31–41 ]…”

Section: Introductionmentioning

confidence: 99%

Photoelastic Organogel with Multiple Stimuli Responses

Gao

Sun

Chen

et al. 2022

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The photoelastic effect has many uses in mechanics today, but it is usually disregarded in flexible materials. Using 2‐phenoxyethyl acrylate as a monomer and 4‐cyano‐4'‐pentylbiphenyl (5CB) as a solvent, a multiple responsive photoelastic organogel (PO) with strong birefringence but low modulus is created. 5CB is a liquid crystal molecule that does not participate in the polymerization process and is always present as tiny molecules in the polymer. It endows the PO low modulus and high birefringence, as well as the ability to drive the birefringence using an electric field. This PO not only has high sensitivity and fast response as a photoelastic strain sensor, but also has a very sensitive response to heat, especially in the range of human body temperature. It also has a high dielectric constant and a strong correlation between the interference color and the applied electric field, allowing for easy writing and erasure of encrypted data. This unique multisignal response feature and low modulus that mimics human skin bring up new opportunities in the potential applications such as multiple information encryption, anticounterfeiting, and multifunctional wearable sensors.

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“…Of these, CPL has become a hot topic recently owing to its unique optical properties. [1][2][3][4][5] With the continuous exploration of CPL, a great deal of CPL materials have been developed, and researchers gradually devote more widespread attention to the regulation of CPL. [6][7][8][9][10][11][12][13][14][15][16] In this regard, there is no doubt that cholesteric liquid crystals (CLCs) are desirable and irreplaceable candidates for the generation or manipulation of CPL regardless of whether they are used as the emission body or propagation medium.…”

Section: Introductionmentioning

confidence: 99%

Induction of a helical superstructure in photoresponsive liquid crystals: switching from linearly polarized to circularly polarized luminescence

Fan

Gao

et al. 2022

Mater. Chem. Front.

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Wavelength-tunable linearly polarized luminescence film constructed using a highly efficient luminescent liquid crystal with stimuli-responsive property

Abstract: High-efficiency linearly polarized luminescence (LPL) materials are very important for display equipment and optical apparatus. Herein, we construct a free-standing film with wavelength-tunable LPL property through the luminescent material. First,...

Cited by 18 publications

References 52 publications

Design of High-Contrast Mechanochromic Materials Based on Aggregation-Induced Emissive Pyran Derivatives Guided by Polymorph Predictions

Design of High-Contrast Mechanochromic Materials Based on Aggregation-Induced Emissive Pyran Derivatives Guided by Polymorph Predictions

Photoelastic Organogel with Multiple Stimuli Responses

Induction of a helical superstructure in photoresponsive liquid crystals: switching from linearly polarized to circularly polarized luminescence

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