Photo-generated reactive oxygen species assisted tandem amine homocoupling and amine-alcohol cross-coupling reaction on mesoporous spinel cobalt oxide

Kapuge, Tharindu Kankanam; Thalgaspitiya, Wimalika R.K.; Rathnayake, Dinithi; He, Jian; Kerns, Peter; Suib, Steven L.

doi:10.1016/j.apcatb.2019.118386

Cited by 14 publications

(6 citation statements)

References 66 publications

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“…By the pyrolysis procedure in this study, the pore size of hollow Co 3 O 4 /C composite is hard to be further amplified. It is reported that the pore size of cobalt oxide could be tuned by nonionic-surfactant-assisted methods, [24] and it is promising to capture other types of disease biomarkers such as proteins and enzymes.…”

Section: Preparation and Characterization Of Hollow Co 3 O 4 /C Compo...mentioning

confidence: 99%

Hollow Cobalt Oxide/Carbon Hybrids Aid Metabolic Encoding for Active Systemic Lupus Erythematosus during Pregnancy

Wang

Shu

Lin

et al. 2022

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A noninvasive, easy operation, and accurate diagnostic protocol is highly demanded to assess systemic lupus erythematosus (SLE) activity during pregnancy, promising real‐time activity monitoring during the whole gestational period to reduce adverse pregnancy outcomes. Here, machine learning of serum metabolic fingerprints (SMFs) is developed to assess the SLE activity for pregnant women. The SMFs are directly extracted through a hollow‐cobalt oxide/carbon (Co3O4/C)‐composite‐assisted laser desorption/ionization mass spectrometer (LDI MS) platform. The Co3O4/C composite owns enhanced light absorption, size‐selective trapping, and better charge–hole separation, enabling improved ionization efficiency and selectivity for LDI MS detection toward small molecules. Metabolic fingerprints are collected from ≈0.1 µL serum within 1 s without enrichment and encoded by the optimized elastic net algorithm. The averaged area under the curve (AUC) value in the differentiation of active SLE from inactive SLE and healthy controls reaches 0.985 and 0.990, respectively. Further, a simplified panel based on four identified metabolites is built to distinguish SLE flares in pregnant women with the highest AUC value of 0.875 for the blind test. This work sets an accurate and practical protocol for SLE activity assessment during pregnancy, promoting precision diagnosis of disease status transitions in clinics.

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Section: Preparation and Characterization Of Hollow Co 3 O 4 /C Compo...mentioning

confidence: 99%

Hollow Cobalt Oxide/Carbon Hybrids Aid Metabolic Encoding for Active Systemic Lupus Erythematosus during Pregnancy

Wang

Shu

Lin

et al. 2022

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“…It is well-known that the benzylamine homocoupling reaction giving 84 has been implemented in many contributions using metallic photocatalysts such as cobalt(II) 60 and ruthenium(II), 61 or even in the presence of some pyrazine-based donor-acceptor photosensitizers (e.g., TETPY) (Scheme 27). 62 This is not a true dimerization process, although in some cases such reactions have been classified using this term.…”

Section: Aldehydes Ketones Alcohols Amines and Iminesmentioning

confidence: 99%

Photocatalytic Homocoupling Transformations

et al. 2021

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The homocoupling reactions promoted by photocatalysts are not very abundant in the literature but compounds generated from them are very interesting. In this short review the coverage of this item will be classified as follows on the basis of the starting material nature. 1. Introduction 2. Arenes and heteroarenes 3. Alkenes 4. Alkanes 5. Alkynes 6. Aldehydes, ketones, alcohols, amines and imines 7. Carboxylic acids 8. Nitrocompounds 9. Conclusions

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“…Co-based oxides are promising catalysts for BzOH oxidation owing to their multiple valences (Co 3+ /Co 2+ ) and surface oxygen vacancies. , In order to display good performances, the materials are normally fabricated as nanosized structures by supporting on high-surface-area solids ,− or by replicating nanostructures from templates − (as when a template is used, the final material will have the structure of the pores of the template). Pineda et al reported that nanosized Co 3 O 4 supported on SBA-15, synthesized by a ball-milling method, showed BzOH oxidation activity comparable to the catalyst prepared by microwave irradiation and wet impregnation .…”

Section: Introductionmentioning

confidence: 99%

Templated Synthesis of Mesoporous Co₃O₄ Nanostructures for the Liquid-Phase Aerobic Oxidation of Benzyl Alcohol to Benzaldehyde

Yao

Xiao

et al. 2022

ACS Appl. Nano Mater.

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Mesoporous Co3O4 nanostructures, templated from different mesoporous silicas, SBA-3, SBA-5, and SBA-16, were used as catalysts for the liquid-phase selective oxidation of benzyl alcohol using molecular oxygen as the oxidant. The nanostructured Co3O4-16, templated from SBA-16, showed the best activity for the reaction, with 97.5% benzyl alcohol conversion and 100% benzaldehyde selectivity obtained after 3 h of reaction at 100 °C. This could be attributed to its large number of oxygen vacancies and low surface Co3+/Co2+ ratio that were beneficial to O2 activation, together with its three-dimensional nanostructure that facilitated the adsorption of benzyl alcohol, compared to Co3O4-3 and Co3O4-15. The material could be reused without losing activity if the organics adsorbed on the surface of the used sample were removed by calcination at 300 °C for 1 h. A mechanism for the reaction was proposed, considering that the activation of molecular oxygen was the rate-determining step of the reaction.

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Photo-generated reactive oxygen species assisted tandem amine homocoupling and amine-alcohol cross-coupling reaction on mesoporous spinel cobalt oxide

Cited by 14 publications

References 66 publications

Hollow Cobalt Oxide/Carbon Hybrids Aid Metabolic Encoding for Active Systemic Lupus Erythematosus during Pregnancy

Hollow Cobalt Oxide/Carbon Hybrids Aid Metabolic Encoding for Active Systemic Lupus Erythematosus during Pregnancy

Photocatalytic Homocoupling Transformations

Templated Synthesis of Mesoporous Co₃O₄ Nanostructures for the Liquid-Phase Aerobic Oxidation of Benzyl Alcohol to Benzaldehyde

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Photo-generated reactive oxygen species assisted tandem amine homocoupling and amine-alcohol cross-coupling reaction on mesoporous spinel cobalt oxide

Cited by 14 publications

References 66 publications

Hollow Cobalt Oxide/Carbon Hybrids Aid Metabolic Encoding for Active Systemic Lupus Erythematosus during Pregnancy

Hollow Cobalt Oxide/Carbon Hybrids Aid Metabolic Encoding for Active Systemic Lupus Erythematosus during Pregnancy

Photocatalytic Homocoupling Transformations

Templated Synthesis of Mesoporous Co3O4 Nanostructures for the Liquid-Phase Aerobic Oxidation of Benzyl Alcohol to Benzaldehyde

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Product

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Templated Synthesis of Mesoporous Co₃O₄ Nanostructures for the Liquid-Phase Aerobic Oxidation of Benzyl Alcohol to Benzaldehyde