Light enhanced proton conductivity in a terbium phosphonate photochromic chain complex

Zhang, Qian; Wei, Wu-Ji; Li, Qi; Pan, Jie; Han, Song‐De; Hu, Ji‐Xiang; Wang, Guo‐Ming

doi:10.1007/s11426-021-9976-7

Cited by 47 publications

(35 citation statements)

References 49 publications

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“…Especially, light irradiation becomes an efficiently applied stimulus due to its convenient and rapid response for dynamic remote control and matched energy between different electronic states. A general approach is developed by incorporating photochromic moieties into the SMM system, including dithienylethene [19][20][21] with open and close forms, 1,2-bis(4pyridyl)ethene [22][23][24][25][26] and 9-anthrylmethylphosphonic acid [27] with photochemical cycloaddition, spiropyran-merocyanine [28,29] with cis-trans isomerization and viologens [30,31] with photogenerated radicals.…”

Section: Introductionmentioning

confidence: 99%

Electron transfer photochromism of Ln-based (Ln = Dy, Tb) coordinated polymers for reversibly switching off/on single-molecule magnetic behavior

Zhang

Han

et al. 2021

Sci. China Mater.

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Switching on/off single-molecule magnets (SMMs) at room temperature is still a challenge in moleculebased magnets. Herein, two photochromic Ln-based (Ln = Dy, Tb) phosphonate coordinated polymers were synthesized with regulable SMM behavior. The reversible room-temperature photo-coloration was an electron transfer process with a generation of relatively stable radicals, characterized by structural analyses, ultraviolet-visible, luminescence and electron spin resonance spectra and magnetic measurements. Importantly, owing to the antiferromagnetic coupling interactions between Ln 3+ ions and photogenerated radicals, the room-temperature light irradiation surprisingly switched off the SMM behavior, showing the first example of radicalquenched SMMs in the molecule-based magnets. Moreover, the silient SMM behavior could be recovered after eliminating photogenerated radicals via heat treatment, showing a reversible off/on switch of SMMs via light and heat. This work constructs a system for switching off/on SMMs through electron transfer photochromism, providing a visual operation way via naked-eye-detectable coloration for the switchable SMMs.

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Section: Introductionmentioning

confidence: 99%

Electron transfer photochromism of Ln-based (Ln = Dy, Tb) coordinated polymers for reversibly switching off/on single-molecule magnetic behavior

Zhang

Han

et al. 2021

Sci. China Mater.

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“…In addition, considering the complexity of the mechanism of proton conduction and the crystal structure information, we speculate that continuous hydrogen-bonding networks can be formed among the uncoordinated carboxylic oxygen atoms, sulfonate oxygen atoms, protonated nitrogen atoms, and adsorbed water molecules under high-temperature and high-RH conditions, which can promote proton hopping along the hydrogen-bonding networks. Thus, the mechanism of proton conduction of 1 is a combination of Grotthuss and vehicle mechanisms, which is more beneficial to the effective transfer of protons and in accord with previous reports. − On consideration of the future practical applications, the PXRD pattern of 1 was obtained after the AC impedance measurement. The PXRD pattern of 1 after the measurement is completely in agreement with that of the pristine sample (Figure S5), indicating the excellent stability of the structure.…”

Section: Resultsmentioning

confidence: 99%

Dual-Functional Metal–Organic Framework for Luminescent Detection of Carcinoid Biomarkers and High Proton Conduction

Zhou

Liu

et al. 2021

Inorg. Chem.

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It remains a challenge to exploit dual-functional metal–organic frameworks (MOFs) for applications, including luminescence detection and proton conduction. With the deliberate selection of the bifunctional organic ligand 5-sulfoisophthalic acid monosodium salt (NaH2bts), and the phosphonic acid ligand N,N′-piperazine (bismethylenephosphonic acid; H4L), a robust three-dimensional (3D) noninterpenetrating dual-functional MOF, [Tb(H2L)(H2bts)(H2O)]·H2O (1), has been synthesized hydrothermally. On the basis of the excellent thermal and chemical as well as superior luminescence stabilities in water and solutions with different pHs, 1 can serve as the simple, rapid, and highly selective and sensitive luminescence detection of the carcinoid biomarkers 5-hydroxytryptamine (HT) and its metabolite 5-hydroxyindole-3-acetic acid (HIAA) with detection limits of nanomolar magnitude in water and in simulated blood plasma and urine systems. Due to the change in the signals that could be readily differentiated by the naked eye under a UV lamp, a portable test paper has been developed. The probable quenching mechanisms are discussed in detail. In addition, a great number of hydrogen-bonding networks are formed among the uncoordinated carboxylic oxygen atoms, sulfonate oxygen atoms, protonated nitrogen atoms, and water molecules, which provide potential proton-hopping sites for proton conduction, leading to a maximum proton conductivity of 2.3 × 10–4 S cm–1 at 368 K and 95% relative humidity. The above results suggest that rationally designed dual-functional MOFs can open an avenue for the development of occupational diagnostic tools and alternative energy technology.

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“…In 2021, another TPT‐based D‐A photochromic hybrid was obtained by a combination of phosphonate units, TPT moieties, and Tb 3+ ions. [ 129 ] This compound also exhibits photomagnetic phenomena after UV light irradiation. Importantly, it shows high conductivity of (1.74 ± 0.19) × 10 –3 S cm –1 at 100% RH and 80 °C because of the extensive hydrogen bonding networks.…”

Section: Recent Advances In the Applications For D‐a Hybrid Heterostr...mentioning

confidence: 99%

Donor–Acceptor Hybrid Heterostructures: An Emerging Class of Photoactive Materials with Inorganic and Organic Semiconductive Components

Liu

et al. 2022

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Just as the heterojunctions in physics, donor–acceptor (D‐A) heterostructures are an emerging class of photoactive materials fabricated from two semiconductive components at the molecular level. Among them, D‐A hybrid heterostructures from organic and inorganic semiconductive components have attracted extensive attention in the past decades due to their combined advantages of high stability for the inorganic semiconductors and modifiability for the organic semiconductors, which are particularly beneficial to efficiently achieve photoinduced charge separation and transfer upon irradiations. In this review, by analogy with the heterojunctions in physics, a definition of the D‐A heterostructures and their general design and synthetic strategies are given. Meanwhile, the D‐A hybrid heterostructures are focused on and their recent advances in potential applications of photochromism, photomodulated luminescence, and photocatalysis summarized.

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Light enhanced proton conductivity in a terbium phosphonate photochromic chain complex

Cited by 47 publications

References 49 publications

Electron transfer photochromism of Ln-based (Ln = Dy, Tb) coordinated polymers for reversibly switching off/on single-molecule magnetic behavior

Electron transfer photochromism of Ln-based (Ln = Dy, Tb) coordinated polymers for reversibly switching off/on single-molecule magnetic behavior

Dual-Functional Metal–Organic Framework for Luminescent Detection of Carcinoid Biomarkers and High Proton Conduction

Donor–Acceptor Hybrid Heterostructures: An Emerging Class of Photoactive Materials with Inorganic and Organic Semiconductive Components

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