Reactive and Functional Polymers, Journal Year: 2024, Volume and Issue: 205, P. 106084 - 106084
Published: Nov. 4, 2024
Language: Английский
The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(18), P. 4880 - 4889
Published: April 29, 2024
Assembling metal nanoclusters (MNCs) to form superstructures generates exciting photophysical properties distinct from those of their discrete precursors. Controlling the assembly process MNCs and understanding assembly-disassembly dynamics can have implications in achieving reversible self-assembly MNCs. The formation self-assembled copper (CuNCs) as homogeneous underlying mechanisms governing such a remain unexplored. Smart molecular imprinting surface ligands establish forces necessary for superstructures. Herein, we report highly luminescent, ordered 4-phenylimidazole-2-thiol (4-PIT)-protected CuNCs with help l-ascorbic acid secondary ligand. Through comprehensive spectroscopic analysis, deciphered mechanism process, where role interligand H-bonding C-H-π interactions was established. Notably, efficient reversibility demonstrated by re-establishing regenerating morphological signatures.
Language: Английский
Citations
4
ACS Applied Optical Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
The effect of stepwise surface modification 6-azo-thiothyamine (ATT) protected AuNCs (ATT-AuNCs), initially with l-Arginine (Arg@ATT-AuNCs) and further cationic surfactants, such as CTAB (CTAB-Arg@ATT-AuNCs) DTAB (DTAB-Arg@ATT-AuNCs), has been reported here. Stepwise ligand engineering (SSLE) significantly slows down the nonradiative transition rate in following order: ATT-AuNCs < Arg@ATT-AuNCs DTAB-Arg@ATT-AuNCs CTAB-Arg@ATT-AuNCs, which increases average radiative lifetime same order. This process also photoluminescence quantum yield (PLQY) trend (2% 41% 58% 72%). There is a simultaneous on solvation dynamics respective where time order CTAB-Arg@ATT-AuNCs. Methyl viologen-derived photosensitization subsequent photoinduced electron transfer (PET) efficiency tested. These are singlet oxygen generators modulate exactly to that PLQY. This, our knowledge, first comprehensive report SSLE control photochemistry, generating propensity.
Language: Английский
Citations
0
RSC Advances, Journal Year: 2024, Volume and Issue: 14(5), P. 3261 - 3266
Published: Jan. 1, 2024
A sensing system for glucose was established based on a self-assembled copper nanoclusters (Cu NCs)-based nano-enzyme and oxidase (GOD). The assembled nanosheets NSs) were prepared in one-step method using 2,3,4,5,6-pentafluorothiophenol (PFTP) as reducing agent protecting ligand. Cu NSs could be used to mimic the enzyme horseradish peroxidase. endowed with excellent enzymatic catalytic activity oxidation of o-phenyldiamine (OPD) presence H2O2. latter generated aerobic catalyzed by GOD. Therefore, detection constructed NSs-OPD-GOD system. This proposed platform showed standard linear range from 10 μM 5 mM towards glucose, limit 5.5 μM. Finally, practical application sensor verified three sugared beverages real samples. Our data reveal that peroxidase applied mixed GOD detection.
Language: Английский
Citations
3
ACS Applied Optical Materials, Journal Year: 2024, Volume and Issue: 2(9), P. 1880 - 1890
Published: Aug. 26, 2024
The preparation of metal nanoclusters through light–matter interaction is an unexplored realm nanomaterials research. A comprehensive understanding the stages involved in growth process scant literature. Herein, we report photoinduced formation yellow-emissive copper (Y-CuNCs) from a binuclear complex [Cu2(SPhCl)2(PPh3)4], which was subsequently observed to undergo conversion green-emissive (G-CuNCs). We were able characterize intermediate complexes, fragments, and formed process, attributed precursors for CuNCs. To initially Cu2(SPhCl)2(PPh3)4, irradiation with ultraviolet (UV) light (λ ∼ 365 nm) resulted Y-CuNCs. Further, upon solution Y-CuNCs UV light, convert G-CuNCs via intercluster conversion. both CuNCs has been extensively studied UV–vis absorption features, photoluminescence studies, lifetime measurements. confirmed help transmission electron microscopy images, electrospray ionization mass spectroscopy (ESI-MS) analysis, 31P NMR data analysis. Moreover, plausible mechanism also substantiated ESI-MS
Language: Английский
Citations
3
ACS Omega, Journal Year: 2023, Volume and Issue: 8(51), P. 49218 - 49227
Published: Dec. 11, 2023
In this study, a facile and cost-effective hydrothermal synthesis method was used to synthesize zinc oxide nanoflowers modified by reduced graphene oxide, subsequently, trimetallic AuPtRu nanoparticles(AuPtRuNPs) were supported via the reduction for high-sensitivity colorimetric detection of H
Language: Английский
Citations
5
Nanoscale, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
Self-assembled thiol-templated CuNCs display NIR-TADF emission which can be modulated by solvent, accompanied remarkable change in the morphology. The electronic structure of surface ligands also used to tailor properties CuNCs.
Language: Английский
Citations
1
Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
This review highlights recent advances in phenylalanine supramolecular assemblies, emphasizing their applications pathology and device technology underscoring significance for future innovations.
Language: Английский
Citations
1
Langmuir, Journal Year: 2024, Volume and Issue: 40(12), P. 6172 - 6186
Published: March 11, 2024
Conformational changes play a seminal role in modulating the activity of proteins. This concept becomes all more relevant context metalloproteins, owing to formation specific conformation(s) induced by internal perturbations (like change pH, ligand binding, or receptor binding), which may carry out binding and release metal ion/ions from center protein. Herein, we investigated conformational an iron-binding protein, monoferric human serum transferrin (Fe-hTF), using several spectroscopic approaches. We could reversibly tune cetyltrimethylammonium bromide (CTAB)-induced conformation exploiting mixed micelles formed three sequestrating agents: (3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate) hydrate (CHAPS) two bile salts, namely, sodium cholate (NaC) deoxycholate (NaDC). The between CTAB these reagents (CHAPS/NaC/NaDC) results sequestration molecules protein environment aids reattaining its native-like structure. However, guanidinium hydrochloride-induced denatured Fe-hTF did not acquire structure agents, substantiates exclusive present study. Apart this, found that (adopted presence CTAB) displays pronounced esterase-like toward
Language: Английский
Citations
0
Nanotechnology, Journal Year: 2024, Volume and Issue: 36(3), P. 035702 - 035702
Published: Oct. 10, 2024
Abstract Accurate and point-of-care cholesterol detection is of paramount significance for the prevention cardiovascular diseases. The colorimetric assay based on peroxidase a commonly used approach detection, without requiring any complicated biomolecular labeling or sophisticated instrumentation. Copper nanoclusters (CuNCs), exhibiting luminescent properties activity, have garnered significant attention in biomedical application recently. Herein, glutathione-stabilized copper (GSH-CuNCs) were prepared with an easy one-pot method, employing glutathione as both reducing agent stabilizer. An optimization GSH-CuNCs preparation was carried out to obtain highest peroxidase-like activity. UV-Vis absorption measured explore steady-state kinetics GSH-CuNCs-catalyzed oxidation 3,3′,5,5′-tetramethylbenzidine (TMB) by H 2 O . A method developed combining catalytic reaction CuNCs enzymatic oxidase (ChOx). Under optimized conditions, absorbance oxidized TMB (oxTMB) proportional concentration within range 6.2–187.5 μ M, limit (LOD) determined be 3.0 M. More importantly, levels can directly distinguished naked eye. Furthermore, practicality detecting human serum has been verified promising results. As expected, this simple, cost-effective, easy-to-operate potential applications clinical diagnosis provides valuable insights into sensing CuNCs.
Language: Английский
Citations
0
Reactive and Functional Polymers, Journal Year: 2024, Volume and Issue: 205, P. 106084 - 106084
Published: Nov. 4, 2024
Language: Английский
Citations
0