Viologen-Based Electrochromic Materials: From Small Molecules, Polymers and Composites to Their Applications
Abstract
:1. Introduction
2. Viologen-Based Electrochromes
2.1. Small Molecular Viologens
2.2. Polyviologens
2.3. Viologen-Functionalized Conjugated Polymers
2.3.1. Viologen in the Main Chain
2.3.2. Viologen as Pendant
2.4. Viologen Based Composite Materials
2.4.1. Composites with Metal Oxides
2.4.2. Composites with Carbon Nanomaterials
2.4.3. Dual EC Composites via Layer-By-Layer (LBL) Assembly
3. Commercial Applications of Viologen-Based ECDs
4. Conclusions and Outlook
Funding
Acknowledgments
Conflicts of Interest
References
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EC Material | Color (O) a | Color (R) b | λmax c (nm) | Vb/Vc d (V) | ∆T e (%) | tb/tc f (s) | Stability (cycles) | CE g (cm2 C−1) | Ref. |
---|---|---|---|---|---|---|---|---|---|
V5 | colorless | Green or red | 600/500 | 0/−1.4 or −1.8 | 30 | - | 6000 | - | [20] |
V6/V4 | colorless | black | 615 | 0/0.5 | 65 | 3.5/2.8 | 10,000 | - | [21] |
V7 | colorless | Dark violet-blue | 605 | 1.5/−1.5 | 52 | 2.1/2.2 | 2000 | 533 | [22] |
V8 | Slight yellow | Deep blue | 607 | 0/0.9 | 83 | - | - | 315 | [23] |
V9 | Greenish yellow | amaranth | 520 | 0/−1.0 | 51 | 2.1/4.5 | 10,000 | 301 | [24] |
MV1 | colorless | magenta | 520 | 0/−1.5 | 68 | 1/1.5 | 1000 | 875 | [25] |
MV3 (Ar=PV) | colorless | pink | 512 | 0/−1.5 | 76.9 | 9.5/56.7 | 1000 | - | [26] |
MV3 (Ar=NV) | colorless | purple red | 544 | 0/−2.5 | 74.1 | 18.4/41.4 | 1000 | - | [26] |
MV3 (Ar=BV) | colorless | deep violet-blue | 592 | 0/−2.4 | 69 | 24/38.6 | 1000 | - | [26] |
MV4 | bright red | blue/violet | 635 | 0.5/−0.8 | 33 | 1.9/1.8 | - | - | [27] |
MV6 (R=vinyl) | colorless | Red brown | 522 | 1.6/−1.6 | 75 | 0.79/0.48 | 1000 | 645 | [28] |
EC Material | Color (O) a | Color (R) b | λmax c (nm) | Vb/Vc d (V) | ∆T e (%) | tb/tc f (s) | Stability (cycles) | CE g (cm2 C−1) | Ref. |
---|---|---|---|---|---|---|---|---|---|
PV I | Colorless | blue | 700 | 0/−1.0 | 34 | 0.26/0.39 | 1000 | 204 | [64] |
PV II | Colorless | blue | 650 | 0/−1.0 | 28 | 0.54/2.18 | 1000 | 117 | [64] |
PV I/PSS | Colorless | blue | 700 | 0/−1.0 | 34.7 | 0.31/0.26 | 50 | - | [62] |
PV I/PVCa | Slight yellow | blue | 700 | −0.5/−1.2 | 40 | 13.5/1.2 | 50 | - | [61] |
V3/PEDOT:PSS | Colorless | blue | 525 | 0.5/−0.9 | 82.1 | 2.2/3.1 | - | - | [48] |
PBV h/PB i | colorless | purplish-blue | 650 | −1.0/0.7 | 65 | 9.4/2.0 | 4000 | 163 | [49] |
CV1 | colorless | Dark blue | 625 | 0/−1.0 | - | - | - | 97 | [69] |
CV4 | colorless | Dark violet | 610 | −0.6/1.0 | 39 | 7/5 | 1000 | 305 | [70] |
CV8 | colorless | blue | 610 | 1.0/−1.0 | 65 | 3.7/8.4 | - | - | [71] |
CV10 (R=PM) | Pale yellow | Dark cyan | 740 | 0/1.05 | 64 | - | - | - | [72] |
CV10 (R=BP) | Pale yellow | Dark cyan | 742 | 0/1.05 | 50 | - | - | - | [72] |
EC Material | Color (O) a | Color (R) b | λmax c (nm) | Vb/Vc d (V) | ∆T e (%) | tb/tc f (s) | Stability (cycles) | CE g (cm2 C−1) | Ref. |
---|---|---|---|---|---|---|---|---|---|
BPV h/meso-nc-TiO2 i | colorless | deep blue | 608 | 2.5/−2.5 | 53 | 0.9/2.1 | 100 | - | [88] |
BPV/nc-TiO2 j | colorless | deep blue | 608 | 0/−1.5 | 55 | 1/1 | 10,000 | 170 | [89] |
PBT k/nc-TiO2 | brown yellowish | dark blue | 600 | 2.0/−2.0 | 64.8 | 0.72/0.6 | 8000 | 912 | [94] |
PBT/nc-TiO2 | yellow green | deep black | 570 | 0.5/−1.5 | 60 | 4.8/3.0 | 120,000 | - | [97] |
V1/ZnO NTs l | colorless | blue | 608 | 3.0/−3.0 | 70 | 3/6 | 500 | 94 | [100] |
V1/ZnO NWs m | colorless | blue | 608 | 2.0/−2.0 | 46 | 0.14/0.17 | 200 | 196 | [98] |
DDV o/ITO NPs n | white | violet | 512 | 0/−0.6 | 15 | 0.38/0.5 | 500 | 140 | [101] |
DDV/SnO2 NPs | white | purple | 510 | 0/−0.5 | 32 | 0.53/1.5 | 150 | - | [103] |
PV I/rGO p | colorless | purple | 525 | 0/−0.6 | 52 | 9/6 | 400 | 142 | [104] |
V1/GQD q | colorless | purple | 550 | 0/−2.8 | 29 | 39/26 | 3000 | 65 | [105] |
WO3/PBV/RP r | colorless | deep blue | 580 | 1.0/−1.0 | 49 | 0.7/0.8 | 500 | 476 | [106] |
PPDP/MWCNTs | colorless | deep blue | 700 | 0.3/−1.0 | 52 | 0.35/0.32 | - | - | [107] |
V3/P2W18 | colorless | violet | 600 | 0.1/−0.9 | 42.7 | 2.0/5.8 | 200 | - | [108] |
PXV s/SQ NPs t | orange | dark purple-blue | 550 | −0.7/−1.3 | 50 | 3.5/3 | - | 205 | [109] |
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Shah, K.W.; Wang, S.-X.; Soo, D.X.Y.; Xu, J. Viologen-Based Electrochromic Materials: From Small Molecules, Polymers and Composites to Their Applications. Polymers 2019, 11, 1839. https://doi.org/10.3390/polym11111839
Shah KW, Wang S-X, Soo DXY, Xu J. Viologen-Based Electrochromic Materials: From Small Molecules, Polymers and Composites to Their Applications. Polymers. 2019; 11(11):1839. https://doi.org/10.3390/polym11111839
Chicago/Turabian StyleShah, Kwok Wei, Su-Xi Wang, Debbie Xiang Yun Soo, and Jianwei Xu. 2019. "Viologen-Based Electrochromic Materials: From Small Molecules, Polymers and Composites to Their Applications" Polymers 11, no. 11: 1839. https://doi.org/10.3390/polym11111839