Aggregation-induced emission enhancement -active triarylamine-based polyamides containing fused ring groups towards electrochromic smart window and sensor for HCl and TNP

Li, Dongxu; Yang, Yan; Yang, Caiyu; Zhang, Wei; Wang, Yan; Lin, Xiaoxue; Gao, Yanyu; Lv, Xinying; Niu, Haijun; Wang, Wen

doi:10.1016/j.dyepig.2020.108799

Cited by 17 publications

(9 citation statements)

References 47 publications

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“…34 Besides, non-planar structure, torsion group, large volume side group, etc., could be introduced into main chain for increasing the flexibility of polymer main chain or avoiding tight packing of polymer chains. [35][36][37] TPA, has a large propeller structure which can disrupt the dense packing of polymer chains. When a positive voltage is applied, the electron-rich TPA units are oxidized into cation radicals, and the absorption in visible and/or NIR region and color of films changes subsequently.…”

Section: Introductionmentioning

confidence: 99%

“…Guan reduced π–π stacking by tetraphenylethylene with four rotatable benzene rings, and the prepared PI can be applied to bifunctional materials 34 . Besides, non‐planar structure, torsion group, large volume side group, etc., could be introduced into main chain for increasing the flexibility of polymer main chain or avoiding tight packing of polymer chains 35–37 …”

Section: Introductionmentioning

confidence: 99%

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Non‐planar polyimides with monomer containing four triphenylamines for near‐infrared electrochromism and TNP detection

Xia

Zhai

et al. 2023

J of Applied Polymer Sci

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By using triphenylamine (TPA) with a propeller structure connected to the planar fluorene unit as monomer, three novel polyimide (PI)s were prepared through chemical imidization of N,N′‐(9,9‐bis(4‐(diphenylamino) phenyl)‐9H‐fluorene‐2,7‐diyl)‐bis(N‐(4‐methoxyphenyl) benzene‐1,4‐diamine) (TPAF‐NH2) with three kinds of dianhydrides. The three dimensional configurations are designed to decrease molecular stacking rising from strong imide bond, and for faster ion transport in cavity of PIs. All the three PIs have good performance of electrochromic(EC) and sensor. With the voltage increasing from 0 to 1.2 V, the color of P2 film changes from original yellow to red to blue with the response time of only 2.3 s (colored time [tc]) and 2.8 s (bleached time [tb]). The coloring efficiency (CE) of P2 reaches 310 cm2 C−1, with optical contrast (ΔT) of 54%. Especially, the electroactivity of P3 does not decrease significantly after 6000 s cycle. Additionally, there are dual‐band in near‐infrared (NIR) area after the PI being oxidized. P1 with photoluminescence (PL) quantum efficiency (φPL) of 48% can detect trinitrophenol (TNP) effectively. The novel PIs have promising prospect in NIR EC and TNP detection devices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Non‐planar polyimides with monomer containing four triphenylamines for near‐infrared electrochromism and TNP detection

Xia

Zhai

et al. 2023

J of Applied Polymer Sci

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“…19 PAs with one or more of the above stimulus responses simultaneously are also used to prepare chemical sensors for heavy metal ions, toxic pesticides, and so forth, 20,21 for example, anthracene-and TPA-containing multifunctional PAs for EC devices and fluorescent sensors for acid which were designed and prepared. 22,23 Phenothiazine (PTZ), as a star fluorophore, is widely used in chemical sensors. 24,25 It has a butterfly-shaped curved structure with function as an electron donor, which is usually substituted at position C3 or C10 to improve PL performance.…”

Section: Introductionmentioning

confidence: 99%

Multi-Stimuli-Responsive Polyamides Containing Benzophenothiazine Being Sensitive to TNP, Acid, Voltage, and Light

Zhai,

Lv,

Zhang

et al. 2023

ACS Appl. Polym. Mater.

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To explore the key factors on the stimuli-responsive behavior of polyamides (PAs), TPA-7-BPT series with TPA-12-BPT series for comparison were synthesized by polycondensation of two kinds of diamines containing benzophenothiazine (BPT) groups fused to triphenylamine (TPA) at different positions and various dicarboxylic acid monomers, respectively. PAs exhibit significant multi-stimuli-response behavior to stimulus sources such as 2,4,6-trinitrophenol (TNP), acid, voltage, and light. The photoluminescence (PL) of TPA-7-BPT-CA and TPA-12-BPT-CA (CA-PAs) can be quenched by TNP effectively with high selectiveness (detection limit for TNP: 138 and 168 nM, respectively). Besides, the PL intensity of TPA-7-BPT-CA could be used for detection of trifluoroacetic acid (TFA) (detection limit of 2.52 μM). Interestingly, the colorless TPA-7-BPT series of polymer films turn blue after acid vapor fumigation. All PA films exhibit electrochromic properties, especially the color of the TPA-12-BPT-OA film maintained electrochemical stability during 3000 s continuous cycles under a potential range of 0−1.1 V with changing back and forth between colorless and deep blue. Furthermore, photoelectronic response occurs in all PA films under xenon lamp irradiation, and the switch ratio I on /I off of TPA-12-BPT-CA is about 30. The multifunctional responsive PAs show a promising application in photoelectric sensors, explosion detectors, memristors, and smart window fields.

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“…They can exhibit many advantageous properties due to which they have found many potential applications, for example, in optoelectronics as materials for organic light-emitting diodes (OLEDs), [1][2][3] solar concentrators, 4,5 light-emitting liquid crystal displays (LE-LCDs), 6 or even as components for electrochromic devices. [7][8][9] Next to optoelectronics, AIE dyes also proved their utility in sensing, 1,[9][10][11] bio-imaging, [12][13][14] and anti-counterfeiting applications. 15 However, despite the great interest in these compounds, the AIE effect on lasing properties is not well described yet.…”

Section: Introductionmentioning

confidence: 99%

One- and two-photon lasing from a TCF-based AIE dye

et al. 2023

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Aggregation-induced emission enhancement -active triarylamine-based polyamides containing fused ring groups towards electrochromic smart window and sensor for HCl and TNP

Cited by 17 publications

References 47 publications

Non‐planar polyimides with monomer containing four triphenylamines for near‐infrared electrochromism and TNP detection

Non‐planar polyimides with monomer containing four triphenylamines for near‐infrared electrochromism and TNP detection

Multi-Stimuli-Responsive Polyamides Containing Benzophenothiazine Being Sensitive to TNP, Acid, Voltage, and Light

One- and two-photon lasing from a TCF-based AIE dye

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