Thermal, optical and electrochemical study of side chain liquid crystalline polymers bearing azo-benzothiazole chromophore in the mesogen

Karim, Md. Rabiul; Sheikh, Md. Rezaul Karim; Yahya, Rosiyah; Salleh, Noordini M.; Azzahari, Ahmad Danial; Hassan, Aziz; Sarih, Norazilawati Muhamad

doi:10.1007/s10965-013-0259-5

Cited by 14 publications

(4 citation statements)

References 40 publications

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“…To achieve higher polarised ratio, the same group modified the device structure with the addition of a layer of NPD to improve the hole-injection, inducing polarised EL with R = 21. 39 Poly(p-phenylenevinylene), 77,78 azobenzene derivatives 79,80 and polyacetylene 81 were also investigated for polarised emission. 39,75,76 The devices based on the oriented films of PFO in phase exhibited the best polarisation performance.…”

Section: Polymeric Fluorescent Lc Materialsmentioning

confidence: 99%

Recent progress in luminescent liquid crystal materials: design, properties and application for linearly polarised emission

et al. 2015

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Luminescent liquid crystals (LCs) materials have attracted significant interests for organic optoelectronic applications, especially for linearly polarised emission, becaused of their combination of ordered alignment and luminescence property. Since the first polarised organic light-emitting diodes (OLEDs) demonstration in 1995, remarkable progress has been done with polarised electroluminescence because of continuous advances with the design of suitable LC materials. In this Review, we summarize luminescent LC materials with representative examples based on fluorescent materials, phosphorescent materials, and lanthanide complexes. The structure-property relationships for polarised emission and, when available, electroluminescence of these materials are presented and discussed, with a focus on phosphorescent metallomesogens. We also present the rational behind the design and development of luminescent LCs materials for high efficiency polarised OLEDs, along with the challenges ahead to achieve efficient devices.

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Section: Polymeric Fluorescent Lc Materialsmentioning

confidence: 99%

Recent progress in luminescent liquid crystal materials: design, properties and application for linearly polarised emission

et al. 2015

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“…It has been of great and constant interest to develop new fluorescent materials with improved properties. In contrast to conventional fluorescent organic materials, featured by having aromatic building blocks or conjugated structures as emitting entities, − a novel type of mainly polymer materials, without conjugated structures and consisting of only heteroatoms (O, N, S, etc. ), has been gaining great attention over the last few decades. , They are usually nonemissive in solutions at low concentration (≤1 mg/mL) and show bright emission in highly concentrated solutions and in the solid state.…”

Section: Introductionmentioning

confidence: 99%

Fluorescence Behavior and Mechanisms of Poly(ethylene glycol) and Their Applications in Fe³⁺ and Cr⁶⁺ Detections, Data Encryption, and Cell Imaging

Sun

Jiang

et al. 2021

ACS Sustainable Chem. Eng.

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In contrast to conventional fluorescent polymers featured by large conjugation structures, a new class of fluorescent polymers without any conjugations is gaining great interest in immerging applications beyond the possibility to achieve by the conjugated polymers. Poly(ethylene glycol) (PEG), widely used in biomedical fields for a long time owing to its nontoxicity and nonimmunogenicity, is found to be fluorescence emissive in the solid state and in aqueous solution, though deemed as not fluorescent in numerous reports. Through systematic study under different conditions, the emission is ascribed to the cluster formation of its chains; thereby the blue-shift of the emission with the excitation wavelength was interpreted through the Forster resonance energy transfer. The clusterization was ascertained through size measurements, Fourier transform infrared spectroscopy, NMR analyses, and the dependence on temperature, pH, and nonsolvent presence. Tested in the presence of competitive metal ions, selective emission quenching by Fe 3+ and Cr 6+ was observed. PEG was used as a sensor for the detection of Cr 6+ , Fe 3+ , and H 2 O 2 , outperforming most of the reported sensors alike. Its uses for data encryption and cell imaging were also presented. This work provides therefore a novel face of PEG with great potential in a variety of emerging applications, in particular, as sensors in the biomedical area.

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“…Nowadays a huge amount of studies are being reported for various applications [2][3][4][5][6][7][8][9][10]. It is to note that, just about two decades ago, a prerequisite to be fluorescent for any organic substances including polymers was that their molecules contain at least one chromophore group, such as cyanine [11], triarylamine [12], pyrazoline [13], carbazole [14], benzoxazole [15], benzothiazole azo [16,17]. The common feature for these materials is that they all contain aromatic building blocks or conjugated structures acting as emitting entities [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Fluorescent linear polyurea based on toluene diisocyanate: Easy preparation, broad emission and potential applications

Cao

Jiang

et al. 2020

Chemical Engineering Journal

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• Toluene diisocyanate (TDI) based polyurea (TPU) is prepared by TDI reaction with H 2 O. • TPU shows strong fluorescent emission as solid powder and in its solution. • The emission in UV region is intrinsic due to its phenyl and the adjacent urea group. • The emission in visible zone is owing to the formation of molecule clusters. • Paper strip dipped in TPU solution is used for easy detections of Fe 3+ and H 2 O 2 .

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Thermal, optical and electrochemical study of side chain liquid crystalline polymers bearing azo-benzothiazole chromophore in the mesogen

Cited by 14 publications

References 40 publications

Recent progress in luminescent liquid crystal materials: design, properties and application for linearly polarised emission

Recent progress in luminescent liquid crystal materials: design, properties and application for linearly polarised emission

Fluorescence Behavior and Mechanisms of Poly(ethylene glycol) and Their Applications in Fe³⁺ and Cr⁶⁺ Detections, Data Encryption, and Cell Imaging

Fluorescent linear polyurea based on toluene diisocyanate: Easy preparation, broad emission and potential applications

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Thermal, optical and electrochemical study of side chain liquid crystalline polymers bearing azo-benzothiazole chromophore in the mesogen

Cited by 14 publications

References 40 publications

Recent progress in luminescent liquid crystal materials: design, properties and application for linearly polarised emission

Recent progress in luminescent liquid crystal materials: design, properties and application for linearly polarised emission

Fluorescence Behavior and Mechanisms of Poly(ethylene glycol) and Their Applications in Fe3+ and Cr6+ Detections, Data Encryption, and Cell Imaging

Fluorescent linear polyurea based on toluene diisocyanate: Easy preparation, broad emission and potential applications

Contact Info

Product

Resources

About

Fluorescence Behavior and Mechanisms of Poly(ethylene glycol) and Their Applications in Fe³⁺ and Cr⁶⁺ Detections, Data Encryption, and Cell Imaging