Vis-to-NIR electrochromism and bright-to-dark electrofluorochromism in a triazine and thiophene-based three-dimensional covalent polymer

Halder, Sayan; Gupta, Neelam; Behere, Ravi Prakash; Kuila, Biplab Kumar; Chakraborty, Chanchal

doi:10.1039/d2me00119e

Cited by 20 publications

(14 citation statements)

References 59 publications

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“…The detailed synthesis of the monomers is described in our previous report. 34 Using GPC with THF as the eluent, TCPN1 and TCPN2 showed M w = 8658 (PDI = 2.54) and 10 089 (PDI = 1.94), respectively (Fig. S1, ESI †).…”

Section: Resultsmentioning

confidence: 99%

Soluble and highly fluorescent conjugated polymer network: non-oxidative reversible doping, cell imaging and anticancer activity

et al. 2023

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Section: Resultsmentioning

confidence: 99%

Soluble and highly fluorescent conjugated polymer network: non-oxidative reversible doping, cell imaging and anticancer activity

et al. 2023

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“…The coloration efficiency (η) of the P-TzTz thin film was estimated as 465.5 cm 2 /C , which is much higher than the coloration efficiency reported for the common organic polymers. 27,65,66 Finally, all the EC parameters are summarized in Table 1.…”

Section: Electrochemical and Ec Studiesmentioning

confidence: 99%

Thiazolothiazole-Containing Conjugated Polymer with Electrochromism and Electrofluorochromism-Based Dual Performance for a Flip-Flop Molecular Logic Gate

et al. 2023

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Dual-performance devices based on electrochromism and electrofluorochromism have recently gained much attention in display technology. However, getting electrochromism and electrofluorochromism from the same material is very challenging. Herein, we have synthesized a low-band-gap donor− acceptor conjugated thiazolothiazole-containing organic polymer, P-TzTz, that exhibited a quasi-reversible single-electron reduction to demonstrate a pale yellow-to-black (NIR region) electrochromism and a red-to-quenched electrofluorochromism at a low potential window of −1.7 to +0.6 V with suitable electrochromic/electrofluorochromic parameters and stability. Possible redoxinduced modulation of π−π* and intramolecular charge transfer in the P-TzTz polymer, which was validated through density functional theory calculations, interplayed the key role of tunable absorption from vis to NIR and on−off fluorescence switching. Finally, mimicking a flip-flop logic gate model with optical memory functions was also demonstrated by taking the potentials as inputs and electrochromic and electrofluorochromic dual performance signals as outputs.

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“…COFs exhibiting similar EC device performance were also prepared from diaminoanthraquinone and triformylresorcinol, using functionalized graphene oxide to enhance their conductivity [ 195 ]. S. Halder et al also prepared electrofluorochromic, conjugated polymeric frameworks ( CPF ; Figure 21 ) via the Suzuki coupling of trisphenyltriazine boronic acid with dibromothiophene [ 196 ]. The frameworks were both electrochromic and electrofluorochromic.…”

Section: Covalent Organic Frameworkmentioning

confidence: 99%

Survey of Recent Advances in Molecular Fluorophores, Unconjugated Polymers, and Emerging Functional Materials Designed for Electrofluorochromic Use

2023

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In this review, recent advances that exploit the intrinsic emission of organic materials for reversibly modulating their intensity with applied potential are surveyed. Key design strategies that have been adopted during the past five years for developing such electrofluorochromic materials are presented, focusing on molecular fluorophores that are coupled with redox-active moieties, intrinsically electroactive molecular fluorophores, and unconjugated emissive organic polymers. The structural effects, main challenges, and strides toward addressing the limitations of emerging fluorescent materials that are electrochemically responsive are surveyed, along with how these can be adapted for their use in electrofluorochromic devices.

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Vis-to-NIR electrochromism and bright-to-dark electrofluorochromism in a triazine and thiophene-based three-dimensional covalent polymer

Abstract: Organic materials conveyed an excellent advantage in electrochromism as they exhibit moderate switching times, high colouration efficiency with a vivid colours range at low potential windows. Furthermore, the conjugated polymeric...

Cited by 20 publications

References 59 publications

Soluble and highly fluorescent conjugated polymer network: non-oxidative reversible doping, cell imaging and anticancer activity

Soluble and highly fluorescent conjugated polymer network: non-oxidative reversible doping, cell imaging and anticancer activity

Thiazolothiazole-Containing Conjugated Polymer with Electrochromism and Electrofluorochromism-Based Dual Performance for a Flip-Flop Molecular Logic Gate

Survey of Recent Advances in Molecular Fluorophores, Unconjugated Polymers, and Emerging Functional Materials Designed for Electrofluorochromic Use

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