Iron (II) Metallo-Supramolecular Polymers Based on Thieno[3,2-b]thiophene for Electrochromic Applications

Chernyshev, Andrei V.; Acharya, Udit; Pfleger, Jiřı́; Trhlíková, Olga; Zednı́k, Jiřı́; Vohlı́dal, Jiřı́

doi:10.3390/polym13030362

Cited by 11 publications

(7 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We did not notice such spectral changes in earlier studies of conjugated Fe-MSPs derived from α,ω-bis( tpy ) unimers [ 18 , 25 , 28 , 29 , 30 , 55 , 56 , 57 ]. However, to be sure, we checked the behavior of related simple Fe complexes with monotopic tpy ligands and FeTt MSP from our recent study [ 15 ] ( Figure 10 ). No change in spectral pattern, only a decrease in the spectral intensity due to ablation, was recorded (especially for complexes with monotopic tpy ligands).…”

Section: Discussionmentioning

confidence: 99%

“…Structural dynamics make MSPs promising materials for the development of functional self-organized architectures, with their tunable properties, self-healing capability, and environmental adaptability. In addition, the incorporation of metal complex linkages into polymer chains has opened new approaches for tuning their magnetic, redox, electrochromic, and optical properties [ 3 , 4 , 5 , 6 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Novel Metallo-Supramolecular Polymers with 1-Thioxophosphole Main-Chain Units and Remarkable Photoinduced Changes in Their Resonance Raman Spectra

et al. 2022

Self Cite

View full text Add to dashboard Cite

New low-bandgap unimers, with the central thiophene-(1-thioxophosphole)-thiophene (TPT) ring sequence and 2,2′:6′,2″-terpyridin-4′-yl (tpy) end groups connected to the central unit via conjugated linkers of different size, are prepared and assembled with Zn(II) and Fe(II) ions to metallo-supramolecular polymers (MSPs) that are studied regarding their properties. The most interesting feature of Zn-MSPs is the luminescence extended deep into the NIR region. Fe-MSPs not only show the metal-to-ligand charge transfer (MLCT) manifested by the MLCT band (an expected feature) but also an as-yet-undescribed remarkable phenomenon: specific damping of the bands of the TPT sequence in the resonance Raman spectra taken from solid Fe-MSPs using the excitation to the MLCT band (532 nm). The damping is highly reversible at the low laser power of 0.1 mW but gradually becomes irreversible as the power reaches ca. 5 mW. The revealed phenomenon is not shown by the same Fe-MSPs in solutions, nor by Fe-MSPs containing no phosphole units. A hypothesis is proposed that explains this phenomenon and its dependence on the irradiation intensity as a result of the interplay of three factors: (i) enhancement of the MLCT process by excitation radiation, (ii) the electron-acceptor character of the 1-thioxophosphole ring, and (iii) morphological changes of the lattice and their dependence on the population of new structures in the lattice.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel Metallo-Supramolecular Polymers with 1-Thioxophosphole Main-Chain Units and Remarkable Photoinduced Changes in Their Resonance Raman Spectra

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…π-Conjugated compounds with two or more tpy end-groups have been in focus for more than two decades as they enable the construction of 2D and 3D metallo-supramolecular polymers applicable in the fields such as catalysis, sensing, photovoltaics, electrochromism, and redox processes [ 22 , 23 , 24 , 25 , 26 , 27 ]. Xi Yang et al reported synaptic memristor plasticity for di( tpy )-1,4-phenylene assembled with Fe 2+ ions [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Synapse-Mimicking Memristors Based on 3,6-Di(tpy)-9-Phenylcarbazole Unimer and Its Copolymer with Cobalt(II) Ions

Pandey,

Chernyshev,

Panthi

et al. 2024

Polymers

Self Cite

View full text Add to dashboard Cite

The title compound, unimer U (tpy stands for 2,2′:6′,2″-terpyridin-4′-yl end-group), by itself shows the memristor effect with a retention time of 18 h and persistence of 11 h. Its coordination copolymer with Co(II) ions, [CoU]n, exhibits multimodal resistance changes similar to the synaptic responses observed in biological systems. More than 320 cycles of potentiation and depression measured in continuous sequence occurred without observing a significant current change, confirming the operational stability and reproducibility of the device based on the [CoU]n polymer. The synaptic effect of a device with an indium tin oxide (ITO)/[CoU]n/top-electrode (TE) configuration is more pronounced for the device with TE = Au compared to devices with TE = Al or Ga. However, the latter TEs provide a cost-effective approach without any significant compromise in device plasticity. The detected changes in the synaptic weight, about 12% for pair-pulse facilitation and 80% for its depression, together with a millisecond trigger and reading pulses that decay exponentially on the time scale typical of neurosynapses, justify the device’s ability to learn and memorize. These properties offer potential applications in neuromorphic computation and brain-inspired synaptic devices.

show abstract

“…Generally, the chromic thin films in the devices can be coated via various methods, for example, spin-/drop-casting, , chemical vapor deposition, , in situ polymerization, and photolithography . However, these conventional methods may suffer from some disadvantages, such as complicated fabrication processes, limited patterns, and enormous material wastes.…”

Section: Introductionmentioning

confidence: 99%

Water-Based Additive-Free Chromic Inks for Printing of Flexible Photochromics and Electrochromics

Zhou,

Liang,

Liu

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Digital inkjet printing has become one of the most convenient and efficient technologies for coating chromic materials on flexible substrates with complicated patterns. However, the development of water-based, additive-free chromic inks for inkjet printing still remains a challenge. Herein, three ammonium-functionalized colorless viologen derivatives AV, APV, and AQV with excellent water solubilities are utilized as chromes in the chromic inks due to their excellent photochromic and electrochromic properties. Water, ethanol, and ethylene glycol are selected as cosolvents, and their contents in this ternary solvent system have been optimized to achieve comprehensive rheological properties. With the H2O:EtOH:EG weight ratio of 8:1:7, the chromic ink based on AV realizes a viscosity of 4.69 mPa·s, a surface tension of 45.13 mN/m, and a Z value of 3.87. Without adding any additive, the as-prepared chromic inks can be printed on flexible substrates, such as paper and poly(ethylene terephthalate) (PET) films, by a conventional inkjet printer with inherent high resolutions. The printed patterns are initially invisible due to the colorless characteristics of the chromic inks. Interestingly, the printed films are responsive to both light and electric stimuli. Upon irradiation by UV light, a series of sentences with font sizes from 5 to 12 points and four quick response codes with different lattice resolutions clearly appear on the printed paper. Meanwhile, after printing on an indium tin oxide-coated PET substrate, electrochromic devices (ECDs) can be facilely fabricated by covering a hydrogel electrolyte on the printed films. Upon application of different potentials, the assembled ECDs exhibit “Peking Opera facial makeup” patterns with different colors. Therefore, the developed water-based additive-free chromic inks can be utilized for information display and encryption applications.

show abstract

Iron (II) Metallo-Supramolecular Polymers Based on Thieno[3,2-b]thiophene for Electrochromic Applications

Cited by 11 publications

References 46 publications

Novel Metallo-Supramolecular Polymers with 1-Thioxophosphole Main-Chain Units and Remarkable Photoinduced Changes in Their Resonance Raman Spectra

Novel Metallo-Supramolecular Polymers with 1-Thioxophosphole Main-Chain Units and Remarkable Photoinduced Changes in Their Resonance Raman Spectra

Synapse-Mimicking Memristors Based on 3,6-Di(tpy)-9-Phenylcarbazole Unimer and Its Copolymer with Cobalt(II) Ions

Water-Based Additive-Free Chromic Inks for Printing of Flexible Photochromics and Electrochromics

Contact Info

Product

Resources

About