Pressure‐Induced Multiphoton Excited Fluorochromic Metal–Organic Frameworks for Improving MPEF Properties

Chen, Cheng‐Xia; Yin, Shao‐Yun; Wei, Zhang‐Wen; Qiu, Qian‐Feng; Zhu, Neng‐Xiu; Ye, Fan; Pan, Mei; Su, Cheng‐Yong

doi:10.1002/anie.201908793

Cited by 61 publications

(45 citation statements)

References 53 publications

(8 reference statements)

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“…It is well known that generally zirconium‐based MOFs possess good structural stability . MOF‐808(Zr) as one member of them has received much attention due to its advantages such as high specific surface area (∼2000 m 2 /g), large pore opening, good stability and rich metal sites .…”

Section: Introductionmentioning

confidence: 99%

Creation of Active Sites in MOF‐808(Zr) by a Facile Route for Oxidative Desulfurization of Model Diesel Oil

et al. 2020

ChemistrySelect

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MOF‐808(Zr) as an important member of metal‐organic frameworks (MOFs) has attracted much attention due to its good stability, large surface area and rich zirconium metal centers. However, Zr sites in the structure of MOF‐808(Zr) are inactive in many catalytic reactions due to they are well coordinated with organic ligands like 1,3,5‐benzenetricarboxylic acid (BTC) and formate anions. Thus, removing formate anions have been attempted to create more active sites in the structure for many reactions while maintaining the structural stability. In this work, we report that the formate ligands in MOF‐808(Zr) can be facilely removed by the treatment in hot ethanol for 4 h. The obtained material as a heterogeneous catalyst exhibited superior catalytic activity in the oxidative desulfurization (ODS) reaction of dibenzothiophene (DBT) compared with reported MOFs catalysts. The conversion of DBT in model diesel oil could reach >99 % within a reaction time of 20 min at 323 K, which is five times as that over parent MOF‐808(Zr). As a result, the sulfur content was decreased from 1000 ppm to less than 10 ppm. Such catalytic performance should be mainly attributed to the creation of more active sites in the structure of MOF‐808(Zr) after the removal of formate anions.

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Section: Introductionmentioning

confidence: 99%

Creation of Active Sites in MOF‐808(Zr) by a Facile Route for Oxidative Desulfurization of Model Diesel Oil

et al. 2020

ChemistrySelect

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“…Zhang et al demonstrated the tunable optical limiting effect in the 3PA, both two-photon absorption (2PA) and 3PA can be found in Ni 3 HHTP 2 (d 8 ), and Cu 3 HHTP 2 (d 10 ) shows prominent 2PA. The 2PA cross-section of Cu 3 HHTP 2 is 1.38 ± 0.11 × 10 7 GM, much larger than those of reported NLO materials reported so far (e.g., 2217 GM for pressed LIFM-114, [33] 1.82 × 10 5 GM for CsPbBr 3 , [34] and 3.45 × 10 6 GM for Au 2406 [35] ). The band structure and the density of states (DOS) of M 3 HHTP 2 were derived from absorption spectra and valence band X-ray photoelectron spectroscopy (XPS) spectra, and it is found that the DOS of d band of metal atoms influences heavily the NLO response of M 3 HHTP 2 .…”

Section: Introductionmentioning

confidence: 61%

Superb Nonlinear Absorption of Triphenylene‐Based Metal–Organic Frameworks Associated with Abundant Metal d Electrons

Sun

Gao

et al. 2021

Advanced Optical Materials

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The exploitation of high‐performance nonlinear optical (NLO) materials is necessitated by the broad application of ultra‐intensive and ultra‐fast lasers. The superb nonlinear absorption and electronic‐structure‐related NLO response of M3HHTP2 are introduced here, where M is Co(II), Ni(II), or Cu(II) and HHTP is 2,3,6,7,10,11‐hexahydroxytriphenylene. With the laser excitation at 532 nm, the Cu3HHTP2 exhibits a two‐photon absorption (2PA) cross‐section of 1.38 ± 0.11 × 107 GM, a value much larger than those of most reported NLO materials so far. The NLO response of M3HHTP2 correlates strongly with the number of metal d electrons. With metal d electrons number increasing from 7 to 10, the optical nonlinearity of M3HHTP2 under the laser excitation at 532 nm varies from three‐photon absorption (3PA) in Co3HHTP2, a combination of 3PA and 2PA in Ni3HHTP2, to 2PA in Cu3HHTP2. Abundant metal d electrons can mitigate the ground‐state depletion, and therefore the 2PA is enhanced. Accordingly, the superb nonlinear absorption of Cu3HHTP2 can be associated with abundant d electrons in Cu.

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“…Recently, the first report on the NLO piezofluorochromism has been published by Pan and co-workers. [32] Five Zr-MOFs (LIFM-66, LIFM-114, LIFM-223, PCN-94, and PCN-128) comprising the same AIE-active TCPE linker, were subjected to compression by applying up to 1.5 tonnes load, using laboratory press. Comparison of 2PA action cross sections (780 nm excitation) measured before and after compression in each case showed www.advopticalmat.de gain, but its extent was widely different.…”

Section: Pressure-dependent 2pa In Aie Mofsmentioning

confidence: 99%

Nonlinear Optical Properties of Emerging Nano‐ and Microcrystalline Materials

Zarȩba

Nyk

Samoć

2021

Advanced Optical Materials

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The activity in the research on novel optical materials exhibiting nonlinear optical (NLO) properties is surveyed, especially nonlinear absorption, that may be attractive for various applications, including those in optoelectronics, photonics, and biophotonics. The recently introduced concept of “NLO pigments”—insoluble colored materials that can exhibit useful NLO effects—is demonstrated to apply to the multifunctional group of coordination polymers (CPs) and their subgroup of metal‐organic frameworks (MOFs), which may be applied in their microcrystalline form or as nanoparticles. Nanocrystalline materials such as semiconductor quantum dots or plasmonic particles made of noble metals have been widely studied and their properties have been often reviewed, thus they are not included in this review. On the other hand, studies performed on perovskites are described: materials that appear to have great potential for NLO applications in addition to their well‐known merit in photovoltaics. There is also much activity in the field of low‐dimensional, especially 2D structures of various kinds, and this review covers many examples of such structures, not including the broad topic of carbon nanostructures (graphene, nanotubes etc.) but concentrating on other emerging nonlinear optical materials such as black phosphorus, transition metal dichalcogenides, MXenes, and topological insulators.

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Pressure‐Induced Multiphoton Excited Fluorochromic Metal–Organic Frameworks for Improving MPEF Properties

Cited by 61 publications

References 53 publications

Creation of Active Sites in MOF‐808(Zr) by a Facile Route for Oxidative Desulfurization of Model Diesel Oil

Creation of Active Sites in MOF‐808(Zr) by a Facile Route for Oxidative Desulfurization of Model Diesel Oil

Superb Nonlinear Absorption of Triphenylene‐Based Metal–Organic Frameworks Associated with Abundant Metal d Electrons

Nonlinear Optical Properties of Emerging Nano‐ and Microcrystalline Materials

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