L‐Arginine‐Functionalized Carbon Dots with Enhanced Red Emission and Upregulated Intracellular L‐Arginine Intake for Obesity Inhibition

Wang, Liming; Li, Licen; Wang, Bingzhe; Wu, Jun; Liu, Yupeng; Liu, Enshan; Zhang, Huiqi; Zhang, Bohan; Xing, Guichuan; Li, Qinglin; Tang, Zikang; Deng, Chu‐Xia; Qu, Songnan

doi:10.1002/smll.202206667

Cited by 76 publications

(92 citation statements)

References 33 publications

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“…The detailed spectrum of N 1s reveals the specific chemical state of N in the composites, and peaks relevant to pyridinic‐N, pyrrolic‐N, graphitic‐N, and oxidic‐N appear at 398.5, 400.4, 401.4, and 404.5 eV. [ 8,29 ] This proves the in situ N‐doping properties of dopamine‐derived carbon, which promotes the introduction of more electrochemically active sites and facilitates rapid Na + transport. And the detailed spectrum of O 1s displays the existence of FeO (529.9 eV), CO (531.5 eV), and CO (533.3 eV).…”

Section: Resultsmentioning

confidence: 95%

In Situ Growth of Iron Sulfide on Fast Charge Transfer V₂C‐MXene for Superior Sodium Storage Anodes

Xiong

Shi

Zhang

et al. 2023

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and low cost. Although the "rockingchair" energy storage principle similar to lithium-ion batteries has driven the development of anode materials for SIBs to a certain extent, the larger ionic radius of Na + with high redox potential, 1.02 Å and −2.71 V versus NHE, tends to cause the poor electrochemical performance of SIBs. [3,4] Therefore, the search for suitable anode materials of sodium storage systems is urgently needed.Lately, conversion-reactive materials, such as metal oxides/sulfide, have attracted much attention due to their high theoretical capacity, among which sulfide exhibits better sodium storage properties as a SIB anode material due to its higher electronic conductivity, better structure maintenance and smaller potential negative drift. [5] As the most common metal, iron sulfide has been investigated for sodium storage capabilities and it shows high reversible capacities proving its feasibility as a high-performance SIB anode material. [6][7][8][9] Additionally, abundant resources, environmental compatibility, and low toxicity also make iron sulfide be more suitable for SIB application prospects as compared to other metal sulfides. Iron sulfide has various stoichiometries according to the different Fe valence states. In particular, pyrrhotite (Fe 7 S 8 ) with mixed-valence states has the characteristic of the intrinsic zero bandgap, which makes it as a promising high-rate anode material. [10] After Due to the upstream pressure of lithium resources, low-cost sodium-ion batteries (SIBs) have become the most potential candidates for energy storage systems in the new era. However, anode materials of SIBs have always been a major problem in their development. To address this, V 2 C/Fe 7 S 8 @C composites with hierarchical structures prepared via an in situ synthesis method are proposed here. The 2D V 2 C-MXene as the growth substrate for Fe 7 S 8 greatly improves the rate capability of SIBs, and the carbon layer on the surface provides a guarantee for charge-discharge stability. Unexpectedly, the V 2 C/Fe 7 S 8 @C anode achieves satisfactory sodium storage capacity and exceptional rate performance (389.7 mAh g −1 at 5 A g −1 ). The sodium storage mechanism and origin of composites are thoroughly studied via ex situ characterization techniques and first-principles calculations. Furthermore, the constructed sodium-ion capacitor assembled with N-doped porous carbon delivers excellent energy density (135 Wh kg −1 ) and power density (11 kW kg −1 ), showing certain practical value. This work provides an advanced system of sodium storage anode materials and broadens the possibility of MXene-based materials in the energy storage.

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Section: Resultsmentioning

confidence: 95%

In Situ Growth of Iron Sulfide on Fast Charge Transfer V₂C‐MXene for Superior Sodium Storage Anodes

Xiong

Shi

Zhang

et al. 2023

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“…This is because the difference in W or E f for metals and semiconductors is the intrinsic driving force for charge transfer in heterojunction nanocomposites. [ 23 ] As shown in Figure A–C, the W of Bi 2 S 3 nanorods, Pt nanoparticles, and Pt‐Bi 2 S 3 nanocomposites are 4.15, 7.12, and 4.74 eV, respectively. Obviously, Pt nanoparticles have a larger W and lower E f (21.7 eV), and Bi 2 S 3 nanorods have a smaller W and higher E f (25.66 eV).…”

Section: Resultsmentioning

confidence: 99%

Rational Design of Platinum–Bismuth Sulfide Schottky Heterostructure for Sonocatalysis‐Mediated Hydrogen Therapy

et al. 2023

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Traditional cancer treatments, surgery, chemotherapy, and radiotherapy, often suffer from severe adverse effects and high drug resistance, leading to the therapeutic efficacy are less than satisfactory. [2] To overcome these "Achilles heel," minimally invasive or noninvasive treatment regimens are being introduced in cancer treatment to promote the production of specific toxic substances within tumor while sparing normal tissues from damage. [3] Among them, sonodynamic therapy (SDT), which uses low-intensity ultrasound (US) as an excitation source to trigger sonochemical reactions for generating highly cytotoxic reactive oxygen species (ROS), has been drawing increasing attention for its high tissue-penetration and safety to human body of ultrasonic waves. [4] Despite these unparalleled advantages, SDT is still in basic research stage and has not achieved widespread clinical application, because the deficiency of sonosensitizers and the specificity of tumor microenvironment (TME) substantially hinder the continuous production of ROS. [5] A variety of sonosensitizers with excellent performance have thus been proposed to overcome this conundrum during the past decades. [6] It is worth noting that the barriers to ROS generation are diverse, such as rapid recombination of sonoexcited electrons/ holes, inherent tumor hypoxia, and high levels of glutathione Conventional sonodynamic therapy is unavoidably limited by the tumor microenvironment, although many sonosensitizers have been developed to improve them to a certain extent. Given this, a concept of sonocatalytic hydrogen evolution is proposed, which is defined as an oxygen-independent therapeutics. To demonstrate the feasibility of the concept, the narrowbandgap semiconductor bismuth sulfide (Bi 2 S 3 ) is selected as the sonocatalyst and platinum (Pt) nanoparticles are grown in situ to optimize their catalytic performance. In this nanocatalytic system, the Pt nanoparticles help to capture sonoexcited electrons, whereas intratumoral overexpressed glutathione (GSH), as a natural hole sacrificial agent, can consume sonoexcited holes, which greatly improves the charge-separation efficiency and promotes controllable and sustainable H 2 generation. Even under hypoxic conditions, the Pt-Bi 2 S 3 nanoparticles can also produce sufficient H 2 under ultrasound irradiation. Mechanistically, mitochondrial dysfunction caused by H 2 and intratumoral redox homeostasis destruction by GSH depletion synergistically damage DNA to induce tumor cells apoptosis. At the same time, the Pt nanoparticles and holes can also trigger the decomposition of hydrogen peroxide into O 2 to relieve tumor hypoxia, thus being synergistic with GSH depletion to reverse tumor immunosuppressive microenvironment. The proposed sonocatalysis-mediated therapy will provide a new direction to realize facile and efficient cancer therapy.

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“…In Figure 2(b), the peaks of the oxygen atoms of the hydroxyl groups of the complexes appear at slightly different positions, with the order of magnitude of the binding energies being 1 (532.3 eV)< 3 (532.6 eV)< 2 (533 eV). Notably, if the inner sphere electron binding energy of an atom shifts to a lower level, showing an increase in its electron cloud density [27] . The lower binding energy of O1s implies that complex 1 may have a higher electron cloud density on oxygen atom than 2 and 3 .…”

Section: Resultsmentioning

confidence: 99%

Electrocatalytic Hydrogen Evolution of the Cobalt Triaryl Corroles Bearing Hydroxyl Groups

Yang

Ren

et al. 2023

Eur J Inorg Chem

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Three isomeric A2B‐type new cobalt triaryl corroles bearing hydroxyphenyl substituents have been prepared and well characterized. Their activity and stability in the electrocatalytic hydrogen evolution reaction (HER) have been investigated. The results showed that the hydroxyl position of the phenyl group had significant influence on electrocatalytic HER. The ortho‐hydroxyphenyl substituted cobalt corrole (1) core displays the best HER activity using TsOH proton source, and the turnover frequency (TOF) and catalytic efficiency (C.E) reach 318.68 s−1 and 1.13, respectively. Moreover, a turnover number (TON) of 1447.39 and Faraday efficiency (FE) of 98.7 % have been observed in aqueous medium. The catalytic pathway is via EECEC, EECC or ECEC pathways depending on the acidity of acid proton source (E: electron transfer step, C: chemical step, in this case protonation). The catalytic HER performance of these cobalt corroles follows an order of o‐hydroxyl > p‐hydroxyl > m‐hydroxyl isomer, showing the o‐ and p‐hydroxyl of the phenyl groups are more efficient in accelerating proton relay.

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L‐Arginine‐Functionalized Carbon Dots with Enhanced Red Emission and Upregulated Intracellular L‐Arginine Intake for Obesity Inhibition

Cited by 76 publications

References 33 publications

In Situ Growth of Iron Sulfide on Fast Charge Transfer V₂C‐MXene for Superior Sodium Storage Anodes

In Situ Growth of Iron Sulfide on Fast Charge Transfer V₂C‐MXene for Superior Sodium Storage Anodes

Rational Design of Platinum–Bismuth Sulfide Schottky Heterostructure for Sonocatalysis‐Mediated Hydrogen Therapy

Electrocatalytic Hydrogen Evolution of the Cobalt Triaryl Corroles Bearing Hydroxyl Groups

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L‐Arginine‐Functionalized Carbon Dots with Enhanced Red Emission and Upregulated Intracellular L‐Arginine Intake for Obesity Inhibition

Cited by 76 publications

References 33 publications

In Situ Growth of Iron Sulfide on Fast Charge Transfer V2C‐MXene for Superior Sodium Storage Anodes

In Situ Growth of Iron Sulfide on Fast Charge Transfer V2C‐MXene for Superior Sodium Storage Anodes

Rational Design of Platinum–Bismuth Sulfide Schottky Heterostructure for Sonocatalysis‐Mediated Hydrogen Therapy

Electrocatalytic Hydrogen Evolution of the Cobalt Triaryl Corroles Bearing Hydroxyl Groups

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In Situ Growth of Iron Sulfide on Fast Charge Transfer V₂C‐MXene for Superior Sodium Storage Anodes

In Situ Growth of Iron Sulfide on Fast Charge Transfer V₂C‐MXene for Superior Sodium Storage Anodes