Multifunctional conjugated oligomers containing novel triarylamine and fluorene units with electrochromic, electrofluorochromic, photoelectron conversion, explosive detection and memory properties

Yang, Caiyu; Cai, Wenfang; Zhang, Xu; Gao, Laixu; Lu, Qingyi; Chen, Ye; Zhang, Zhipeng; Zhao, Ping; Niu, Haijun; Wang, Wen

doi:10.1016/j.dyepig.2018.07.043

Cited by 38 publications

(12 citation statements)

References 43 publications

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“…While we have discussed fluorene-containing ELC polyamides in the previous section, the highly fluorescent fluorene moiety is also used in the development of ELC-conjugated polymers. Wang et al recently reported a series of conjugated polymers P19a – c containing fluorene and triphenylamine moieties [70]. This series of polymers P19a – c revealed blue-to-dark emission change as applied external potentials increased from 0 to 1.5 V. As anticipated, the fluorescence-quenching of both series of polymers was due to the formation of the triphenylamine radical cation [70].…”

Section: Elc Polymersmentioning

confidence: 77%

Electroluminochromic Materials: From Molecules to Polymers

et al. 2019

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Electroluminochromism is an interesting property found in certain classes of molecules and polymers whose photoluminescence can be modulated through the application of an external electrical bias. Unlike electrochromic materials, electroluminochromic counterparts and their applications are comparatively fewer in quantity and are less established. Nonetheless, there prevails an increasing interest in this class of electro-active materials due to their potential applications in optoelectronics, such as smart-displays, and chemical and biological sensing. This review seeks to showcase the different classes of electroluminochromic materials with focus on (i) organic molecules, (ii) transition metal complexes, and (iii) organic polymers. The mechanisms and electroluminochromic performance of these classes of materials are summarized. This review should allow scientists to have a better and deeper understanding of materials design strategies and, more importantly, structure-property relationships and, thus, develops electroluminochromic materials with desired performance in the future.

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Section: Elc Polymersmentioning

confidence: 77%

Electroluminochromic Materials: From Molecules to Polymers

et al. 2019

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“…(a) Chemical structures of a series of fluorene‐based copolymers, (b) schematic of Al/polymer (P50–P52)/ITO device and (c) current–voltage characteristics showing flash memory behavior (adapted from Ref. 101 ; Copyright 2019, Dyes and Pigments ).…”

Section: Conjugated Memristive Polymers For Data Storage Memoriesmentioning

confidence: 99%

“…Wang and co‐workers synthesized a series of conjugated oligomers (P50–P52) using the Suzuki coupling reaction (Fig. 16(a)) 101 . These oligomers show interesting electrochromic behaviors, wherein high‐contrast, long‐lasting and reversible transition from a yellowish neutral state to a final blue oxidized state can be observed.…”

Section: Conjugated Memristive Polymers For Data Storage Memoriesmentioning

confidence: 99%

Conjugated polymers for information storage and neuromorphic computing

Liu

Chen

Liu

2020

Polymer International

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In the era of information explosion, silicon‐based storage can barely meet the burgeoning demand for data storage and making Moore's law no longer accurate. What is more, the traditional von Neumann architecture separates the computing module from the storage unit, which causes a slowing down of the overall computing efficiency. Conjugated polymer memristors, due to the advantages of simple fabrication, convenient operation and low cost, are considered as promising candidates for next‐generation memory and neuromorphic computing applications. This review summarizes the advances in conjugated polymer memristive materials and devices made during the first two decades of the 21st century, and their potential applications in information storage and neuromorphic computing. Focuses are on switching mechanisms and materials classifications, as well as memory, artificial synapse and bioinspired and in‐memory computing performance. © 2020 Society of Chemical Industry

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“…Consequently, scientists anticipate finding some EC materials with electrofluorochromic (EFC) merit controlled by an electric field, which could be used in either daytime or dusk. , Liou, Sun, Xu, and Niu’s group and others paved the way to integrate EC and EFC. They combined emitters, such as fluorine or quantum dots, which possess EFC properties with EC materials to obtain EFC devices. − Nevertheless, the desired light color, such as white light, is difficult to simultaneously obtain. Inspired by Zhang et al, we selected polyimides (PIs) as the mother chain and integrate different fluorophores onto the chain.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Flexible Polyimides for Electroactive Devices with Electrochromic, Electrofluorochromic, and Photodetection Properties

Zheng

Huang

Niu

et al. 2021

ACS Appl. Polym. Mater.

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In this study, we report three electroactive carbazolyl polyimides (PIs) containing spiropyran, pyrene, and fluorescein fluorescent groups. The PIs exhibit red, blue, and green fluorescence emissions, respectively. The PIs exhibit aggregation-induced emission and electrochromic (EC) and electrofluorochromic properties. Moreover, white light emission can be achieved by adjusting the mixing ratio of the three PIs. The PIs show high photoluminescence intensity in a solution and solid state. Interestingly, as the volume of ethyl acetate in the PI dimethyl sulfoxide solutions increases, the fluorescence intensity increases continuously. This is due to the decrease in solvent polarity and is distorted by the twisted intramolecular charge-transfer effect, enhancing the emission intensity. The PI films have excellent electrochemical stability between the neutral and first oxidation states of 2000 cycles, and their electrical activities are maintained at 99% CzpP-SPP, 99% CzpP-PREP, and 99% CzpP-FRNP. Under the action of an external electric field, the PIs exhibit excellent EC performance, and the highest EC efficiency was 187 cm 2 C −1 . Furthermore, the fluorescence and color switching between the oxidation state (nonfluorescent state) and reduced state (fluorescent state) of the PI films are reversible. This work provides a simple strategy for the direct functionalization of Cz-based materials and opens the way for exploring more applications of Cz-based materials.

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Multifunctional conjugated oligomers containing novel triarylamine and fluorene units with electrochromic, electrofluorochromic, photoelectron conversion, explosive detection and memory properties

Cited by 38 publications

References 43 publications

Electroluminochromic Materials: From Molecules to Polymers

Electroluminochromic Materials: From Molecules to Polymers

Conjugated polymers for information storage and neuromorphic computing

Multifunctional Flexible Polyimides for Electroactive Devices with Electrochromic, Electrofluorochromic, and Photodetection Properties

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