Molecular design strategy for realizing vectorial electron transfer in photoelectrodes

Roh, Deok‐Ho; Park, Junhyeok; Han, Hyun-Gyu; Kim, Ye-Jin; Motoyoshi, Daiki; Hwang, Eunhye; Kim, Wang-Hyo; Mapley, Joseph I.; Gordon, Keith C.; Mori, Shogo; Kwon, Oh‐Hoon; Kwon, Tae‐Hyuk

doi:10.1016/j.chempr.2022.01.017

Cited by 4 publications

(2 citation statements)

References 71 publications

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“…Furthermore, as scintillators, these organic TL materials demonstrate long-lived radioluminescence and X-ray-excited TL, offering great potential for various applications, including radiation dosimetry and X-ray imaging. The unique luminescent properties, intricately linked to the back electron transfer within the Marcus inversion region, highlight the significance of our findings not only in the field of organic luminescent materials but also in their several intriguing implications for diverse research areas involving back electron transfer, such as organic energy materials and bioelectronic systems 12,50 . These findings open up exciting prospects for further exploration and highlight the far-reaching impact of back electron transfer in a wide range of scientific domains.…”

Section: Discussionmentioning

confidence: 71%

Visible Organic Thermoluminescence above Room Temperature in Small Molecule Crystals

Wang,

Yang,

Wang

et al. 2023

Preprint

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Thermoluminescence (TL) is commonly observed in inorganic luminescent materials at elevated temperatures, with applications in radiation dosimetry, archaeology, geological dating, and defect studies. However, the understanding of TL in organic small molecules above room temperature is still limited. Here, we experimentally discovered and theoretically analyzed the unusual TL exhibited by organic scintillation crystals in air. It exhibits an onset temperature of ~300 K, reaching its maximum intensity at 348 K (heating rate of 2 K s-1). Upon 365 nm ultraviolet light excitation at room temperature, the material gradually released stored energy through phosphorescence, achieving a record-breaking organic afterglow lasting over 10 hours. The exceptional luminescence originates from excited states generated by thermally driven back electron-transfer (BET). Crucially, this work reveals that certain instances of previously reported ultralong organic afterglow are, in reality, specific cases of organic TL occurring at room temperature. These findings prompt a reevaluation of the similarities and differences between organic and inorganic phosphors. Specifically, in the absence of a comprehensive understanding of above-room-temperature thermoluminescence in organics, the information gained from this work holds significant practical implications for organic emitters and fields involving back electron transfer.

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Section: Discussionmentioning

confidence: 71%

Visible Organic Thermoluminescence above Room Temperature in Small Molecule Crystals

Wang,

Yang,

Wang

et al. 2023

Preprint

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“…1,2 Various types of TPV have been developed, but most have low power conversion efficiency (PCE) or low long-term stability. [3][4][5][6][7][8][9][10] However, the Seo group recently developed neutral-colored crystalline siliconbased TPV (c-Si TPV) with a high PCE and long-term stability. [11][12][13] For c-Si TPV, microhole-shaped light transmission windows (LTWs) were fabricated via deep reactive ion etching (DRIE) on bare crystalline silicon (c-Si), resulting in transmittance of all visible wavelengths (350-750 nm).…”

Section: Introductionmentioning

confidence: 99%

Deep metal-assisted chemical etching using a porous monolithic AgAu layer to develop neutral-colored transparent silicon photovoltaics

et al. 2023

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A Pyridine Anchoring Strategy for Dye‐Sensitized Photocatalysis

Tang,

Shao,

Zhong

2024

ChemCatChem

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Anchoring groups play an important role in the assembly of functional molecules onto semiconductor substrates for the purpose of dye‐sensitized photocatalysis. In addition to directly influencing the adsorption stability, the anchoring group significantly impacts the efficiency of electron or hole injection into the substrate, which is a crucial step of interfacial photocatalytic reactions. Most reported dye‐sensitized photocatalytic systems, including semiconductor nanoparticles and photoelectrochemical cells, are prepared using the carboxylic or phosphonic anchors. The systems prepared with these conventional anchors usually suffer from low adsorption stability in aqueous media. Alternatively, pyridine has emerged as an anchoring group of photosensitizers and molecular catalysts in the construction of photocatalytic systems. The resulting semiconductor nanoparticles and photoelectrodes show superior adsorption stability in practice in aqueous media, providing a simple and efficient way to sensitize the metal or metal oxide substrate. This review focuses especially on the recent advances of such a pyridine anchoring strategy in the assembly of photosensitizers and molecular catalysts for photocatalytic applications, in particular photocatalytic water oxidation, reduction, and splitting. The further exploration and understanding of the pyridine‐anchoring method are believed to boost the development of advanced dye‐sensitized photocatalytic devices and technologies.

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Molecular design strategy for realizing vectorial electron transfer in photoelectrodes

Cited by 4 publications

References 71 publications

Visible Organic Thermoluminescence above Room Temperature in Small Molecule Crystals

Visible Organic Thermoluminescence above Room Temperature in Small Molecule Crystals

Deep metal-assisted chemical etching using a porous monolithic AgAu layer to develop neutral-colored transparent silicon photovoltaics

A Pyridine Anchoring Strategy for Dye‐Sensitized Photocatalysis

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