Terpyridine-Based Monolayer Electrochromic Materials

Allan, Jesse T. S.; Quaranta, Simone; Ebralidze, Iraklii I.; Egan, Jacquelyn G.; Poisson, Jade; Laschuk, Nadia O.; Gaspari, F.; Easton, E. Bradley; Zenkina, Olena V.

doi:10.1021/acsami.7b11848

Cited by 46 publications

(47 citation statements)

References 40 publications

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“…Figure 2A shows the Fe 2p region of the V-tpy-Fe spectrum which contains two characteristic peaks for Fe 3 + : Fe 2p 3/2 at 711 eV and Fe 2p 1/2 at 724.5 eV. [31] The nitrogen N1s peak appears at 399.9 eV which is a characteristic peak for pyridinic nitrogen. [16] This was expected due to the synthetic method that was used to modify the carbon surface (Scheme 1).…”

Section: Physical Characterizationmentioning

confidence: 99%

Fe−N₃/C Active Catalytic Sites for the Oxygen Reduction Reaction Prepared with Molecular‐Level Geometry Control through the Covalent Immobilization of an Iron−Terpyridine Motif onto Carbon

et al. 2019

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A model for a non-precious metal catalyst for the oxygen reduction reaction (ORR) in aqueous media has been prepared by functionalizing a commercial Vulcan XC-72 carbon support with a terpyridine-based nitrogenous ligand. The terpyridine ligand geometry allows the formation of active catalytic sites by selectively embedding a N 3 /C structural motif into the carbon support confirmed by using thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS) measurements. Room-temperature metal-ligand coordination results in the desired FeÀ N 3 /C moieties on the surface. This model system was used to demonstrate the catalytic activity of the surfaces containing mainly FeÀ N 3 sites for the ORR in acidic and basic media. Importantly, we demonstrate that the system could be prepared under mild reaction conditions, does not require hightemperature treatments, and shows catalytic activity for the ORR. Interestingly, when the system was pyrolyzed in an N 2 atmosphere at 700°C the resulting activity declined. The nonheat-treated FeÀ N 3 /C surface demonstrates comparable activity in acidic electrolyte medium when compared to most literature catalysts that are typically heat treated to produce four nitrogen atoms coordinated to one iron center (FeÀ N 2 + 2 /C). Interestingly, despite the fact that many systems reported so far in the literature exhibit enhanced activity after heat treatment, our system showed an increase in activity when the material was not pyrolyzed.

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Section: Physical Characterizationmentioning

confidence: 99%

Fe−N₃/C Active Catalytic Sites for the Oxygen Reduction Reaction Prepared with Molecular‐Level Geometry Control through the Covalent Immobilization of an Iron−Terpyridine Motif onto Carbon

et al. 2019

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“…In fact, an important number of terpyridine-based compounds can be prepared by varying the substitution pattern onto the terpyridine scaffold and/or the nature of the complexed metal. Terpyridines and their complexes have found a vast range of applications such as sensitizers in solar cells [2], catalysts [3], materials for water treatment [4], electrochromic materials [5], or as chromophores [6], just to name a few. Terpyridine complexes that are substituted with a thiophene ring are interesting compounds because they also find many possible applications in material science [7] or medicinal chemistry and biology [8,9], for example.…”

Section: Introductionmentioning

confidence: 99%

4,4″-Dichloro-4′-(2-thienyl)-2,2′:6′,2″-terpyridine

Husson

Guyard

2019

Molbank

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“…Another type includes the rare earths or their composites such as Mg–Zr–Ni alloy, which predominantly transforms between the reflective and transparent states through hydrogenation and de‐hydrogenation . The third group can be defined as metal element related EC materials including transition metal oxides, organometallic complexes, and metals . This kind of EC materials change their optical properties by valence variation of the metal elements.…”

Section: Introductionmentioning

confidence: 99%

Reliable Information Encryption and Digital Display Applications Based on Multistate Smart Windows

Qiu

Sun

Zhang

et al. 2018

Advanced Optical Materials

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EC devices can be classified into following three types. [6,7] One of the most studied one involves conducting organic molecule based EC materials, which mainly contain conducting polymer and other conductive organic molecules. [8][9][10][11][12] These organic EC materials change their color mainly by modulating the composition of some functional groups through doping proton or other ions, thus resulting in their oxidized and reduced states. Another type includes the rare earths or their composites such as Mg-Zr-Ni alloy, which predominantly transforms between the reflective and transparent states through hydrogenation and de-hydrogenation. [13][14][15] The third group can be defined as metal element related EC materials including transition metal oxides, organometallic complexes, and metals. [16][17][18][19][20][21][22] This kind of EC materials change their optical properties by valence variation of the metal elements. Especially, the one based on several metals (Ag, Cu, Al, or Ni, etc.) modulate their optical properties by transforming their states between metal and metal ion. [3,6,7,[23][24][25][26][27][28][29][30] Among the aforementioned three EC devices, the reversible electrodepositing metal device (REMD) owns the advantages of facial fabrication, time saving, low-cost, and long-term stability. Moreover, the REMD exhibits short switching time, tunable transparency, good durability and chemical stability. [5] The optical modulation ability and other performance of REMD have been studied and improved by a series of researchers. Kobayashi and co-workers proposed the realization of the three optical states devices and multicolor tunable devices by adopting Ag based REMD. [6,23] Jeong et al. reported the black state of REMD can be largely improved via introducing 3D indium tin oxide (ITO) branches. [30] Park et al. has enhanced the ability to keep mirror state (smooth ITO side) by self-assembling thiol-terminated silane as connecting bridge between ITO glass and Ag particles. [26] Although the property of these multicolor devices has been explored a lot, the simultaneous enhancement of their black and mirror performance has not been achieved yet. Besides, the applications for efficiently using them are still rather limited. Thus, it is of great importance to explore the novel applications of the multicolor devices and broaden their functionalities. [25,[27][28][29][30] Herein, a multicolor state REMD based on Ag particles with excellent electrochromic performance was successfully fabricated. The device consists of a positive electrode which modified by a layer of thiol-terminated silane through A multistate smart window based on the reversible electrodepositing metal device (REMD) with excellent electrochromic performance is reported. A thiol-terminated silane modified indium tin oxide (ITO) glass acts as positive electrode and an ITO glass coated by ITO nanoparticles serves as negative electrode. The REMD can exhibit 4 different color states. Its mirror state presents a higher reflectance than the commercial ...

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Terpyridine-Based Monolayer Electrochromic Materials

Cited by 46 publications

References 40 publications

Fe−N₃/C Active Catalytic Sites for the Oxygen Reduction Reaction Prepared with Molecular‐Level Geometry Control through the Covalent Immobilization of an Iron−Terpyridine Motif onto Carbon

Fe−N₃/C Active Catalytic Sites for the Oxygen Reduction Reaction Prepared with Molecular‐Level Geometry Control through the Covalent Immobilization of an Iron−Terpyridine Motif onto Carbon

4,4″-Dichloro-4′-(2-thienyl)-2,2′:6′,2″-terpyridine

Reliable Information Encryption and Digital Display Applications Based on Multistate Smart Windows

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Terpyridine-Based Monolayer Electrochromic Materials

Cited by 46 publications

References 40 publications

Fe−N3/C Active Catalytic Sites for the Oxygen Reduction Reaction Prepared with Molecular‐Level Geometry Control through the Covalent Immobilization of an Iron−Terpyridine Motif onto Carbon

Fe−N3/C Active Catalytic Sites for the Oxygen Reduction Reaction Prepared with Molecular‐Level Geometry Control through the Covalent Immobilization of an Iron−Terpyridine Motif onto Carbon

4,4″-Dichloro-4′-(2-thienyl)-2,2′:6′,2″-terpyridine

Reliable Information Encryption and Digital Display Applications Based on Multistate Smart Windows

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Fe−N₃/C Active Catalytic Sites for the Oxygen Reduction Reaction Prepared with Molecular‐Level Geometry Control through the Covalent Immobilization of an Iron−Terpyridine Motif onto Carbon

Fe−N₃/C Active Catalytic Sites for the Oxygen Reduction Reaction Prepared with Molecular‐Level Geometry Control through the Covalent Immobilization of an Iron−Terpyridine Motif onto Carbon