Nickel (II) Macrocyclic Complexes: Template Synthesis, Spectroscopic Investigations, Electrochemical Behavior, DFT Studies, and Biological Evaluation DOI
Manish Yadav,

Sarita Beniwal,

Gulshan Kumar

и другие.

ChemistrySelect, Год журнала: 2025, Номер 10(15)

Опубликована: Апрель 1, 2025

Abstract A novel series of tetraaza nickel (II) macrocyclic complexes was prepared via template condensation involving the ligand 2‐[4‐bromo‐2‐(2‐oxo‐1,2‐diphenyl‐ethylideneamino)‐phenylimino]‐1,2‐diphenyl‐ethanone (ML) and selected diamines, such as 4‐chloro 1,2‐phenylenediamine, 4‐bromo 1,2‐diaminotoluene, 4‐nitro 1,2‐diaminopropane, ethylenediamine, in presence NiCl 2 .6H O. The its resulting were characterized through elemental analysis, molecular weight determination, a range spectral techniques, including IR, electronic spectra, 1 H NMR, mass spectrometry, X‐ray powder diffraction, DFT‐assisted structural characterization. DFT (TDDFT/B3LYP/6–311g(d) method) analysis representative Ni(II) supports plausible structures proposed based on spectroscopic studies. These analyses suggest that each complex adopts six‐coordinated octahedral geometry. Their redox behavior examined detail using cyclic voltammetry (CV). Furthermore, new tested for their antimicrobial, antioxidant, antidiabetic, antituberculosis activities. Antimicrobial tests conducted against E. coli, B. subtilis, A. niger , P. chrysogenum synthesized compounds. antioxidant properties assessed DPPH assay showed [Ni(C 41 29 BrCl N 4 )] exhibited highest activity, with an IC 50 value 89.13 mg/mL. Additionally, antimycobacterial where 40 3 demonstrated significant effectiveness inhibiting growth Mycobacterium tuberculosis .

Язык: Английский

Nanoarchitectonics of cyclic aromatic imides as potential scaffolds for coordination and supramolecular coordination frameworks DOI

Monika Chhapoliya,

Devendra Singh

Materials Today Chemistry, Год журнала: 2025, Номер 44, С. 102563 - 102563

Опубликована: Фев. 3, 2025

Язык: Английский

Процитировано

0
Atomically Engineered Trimetallic Nanoclusters Toward Enhanced Photoluminescence and Photoinitiation Activity DOI Open Access
Xu Liu,

Jin Tang,

Fangming Zhao

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 13, 2025

Abstract Precise doping is of vital significance for atomic engineering and the establishment structure‐property relationships in nanocluster (NC) chemistry. Herein, two novel trimetallic MAu 18 Cd 3 (M = Pd/Pt) NCs that are derived from M‐doped Au 25 templates 24 reported, which central M atom surface‐motif atoms concurrently achieved. Compared to original templates, Cd‐induced surface enhances rigidity structural framework enlarges HOMO‐LUMO gaps , significantly improving photoluminescent efficiency by suppressing nonradiative relaxation. The critical role (Pd/Pt) dopant photoluminescence, regulates rate radiative decay excited‐state electrons, has also been substantiated. More notably, doped case PtAu exhibits excellent photoinitiation activity 3D two‐photon printing with a high resolution ≈140 nm, may be attributed prolonged excited state. Overall, this work provides generalized routine precise synthesis multi‐metal concurrent enhancements photoluminescence activity, expected stimulate further research design preparation multi‐functional, NCs.

Язык: Английский

Процитировано

0
Next-Generation Metal–Organic Frameworks: Shaping the Future of Steroid Compound Management DOI Creative Commons
Hong Jiang,

Siyan Xu,

Xiaomeng Xiang

и другие.

ACS Omega, Год журнала: 2025, Номер 10(10), С. 9890 - 9902

Опубликована: Март 3, 2025

Metal-Organic Frameworks (MOFs), as a new type of porous material, have attracted widespread attention in the fields chemistry, materials science, and biomedicine owing to their unique structural characteristics potential for functionalization. This review summarizes latest research progress MOFs field steroid compounds, including purification separation steroids, sensing detection, catalytic transformation, drug delivery. First, we explore how structure chemical functionalization achieve efficient compounds. Second, high sensitivity selectivity well application actual sample analysis, are analyzed. Furthermore, role transformation reactions is discussed, performance catalysts or catalyst carriers. Finally, focus on innovative applications delivery systems, especially advantages controlled release targeted article also explores future development trends prospects highlighting challenges opportunities material design, strategies, practical implementations. Through this review, aim provide comprehensive theoretical basis guidance further steroids.

Язык: Английский

Процитировано

0
Lighting up metal nanoclusters by the H2O-dictated electron relaxation dynamics DOI Creative Commons
Yuan Zhong,

Xue Wang,

Zhou Huang

и другие.

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Март 7, 2025

Abstract The modulation of traps has found attractive attention to optimize the performance luminescent materials, while understanding trap-involved photoluminescence management metal nanoclusters greatly lags behind, thus extensively impeding their increasing acceptance as promising chromophores. Here, we report an efficient passivation structural oxygen vacancies in AuAg by leveraging H 2 O molecules, achieving a sensitive color tuning from 536 480 nm and remarkably boosting quantum yield 5.3% (trap-state emission) 91.6% (native-state emission). In detail, favored electron transfer relevant contributes weak trap-state emission, which is capable being restrained molecules taking Au-O Ag-O bonds. This scenario allows dominated native-state emission with faster radiative rate. parallel, can rigidify landscape on hydrogen bonding, enabling suppression electron-optical phonon coupling decelerated non-radiative presented study deepens tailoring properties manipulating surface trap chemistry relaxation dynamics, would shed new light customizable performance.

Язык: Английский

Процитировано

0
Low Optical Loss and Bent Waveguides: Crystals of a One-Dimensional Pt1Ag14 Nanocluster DOI

Chuanjun Zhou,

Wei Huang, Kaiyang Kuang

и другие.

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Март 28, 2025

Photoluminescent nanoclusters are promising materials for optical waveguides. However, their photon transmission under mechanical stress is very challenging. Here, we report an low-loss metallic nanocluster crystal, [Pt1Ag14(DPPP)6Cl4](SbF6)2 (DPPP = 1,3-bis(diphenylphosphino) propane), which exhibits stable performance with loss coefficient of 7.15 × 10–4 dB·μm–1─lower than most reported inorganic, organic, and hybrid materials. The Pt1Ag14 crystals maintain excellent stability deformation, difference only 0.15 10–3 dB·μm–1 before after stress. Reasonable molecular design endows robust flexibility, resulting in bending radius being smaller that similar structures. Structural analysis has shown multiple π···π, C–H···π, C–H···F intra- intermolecular interactions originating from the ligands between counterions ensure crystal Metallic low flexibility generated by rational offer candidates fields active waveguides flexible electronic

Язык: Английский

Процитировано

0
Impact of Heterocore Atoms on CO2 Electroreduction in Atomically Precise Silver Nanoclusters DOI

Seungwoo Yoo,

Dayeon Kim,

Guocheng Deng

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Апрель 4, 2025

Understanding the effect of internal atoms in metal nanoparticles on heterogeneous catalytic processes is crucial for achieving high activity and selectivity. This requires meticulous synthetic control over size, composition, atomic arrangement nanoparticles. Here, we report design ligand-exchange-induced structure transformation nanomolecule-templated atomic-level galvanic exchange strategies to synthesize PtAg24(IPBT)18 (denoted as PtAg24) AuAg24(IPBT)18 AuAg24) nanoclusters (NCs). Both NCs exhibit identical total atom ligand (IPBT: 2-isopropylbenzenethiolate) counts, well structure, except difference core (Pt Au). Using these model NCs, uncover impact heterocore electrochemical CO2 reduction reaction (eCO2RR) The central Pt PtAg24 less favorable eCO2RR activity, with an approximately 4 times smaller than that Au AuAg24. product CO selectivity <30% PtAg24, while it exceeds 70% AuAg24, revealing critical role surface pathways. Furthermore, AuAg24 exhibits a partial current density -202.2 mA cm-2, stability 24 h, retaining 90% membrane electrode assembly configuration. Operando spectroscopy functional theory calculations suggest weaker adsorption *CO intermediates energy barrier facilitate production compared providing valuable atomistic insights into mechanism. findings this work will inspire more atomically precise nanocatalysts explore their remarkable features renewable conversion storage.

Язык: Английский

Процитировано

0
Nickel (II) Macrocyclic Complexes: Template Synthesis, Spectroscopic Investigations, Electrochemical Behavior, DFT Studies, and Biological Evaluation DOI
Manish Yadav,

Sarita Beniwal,

Gulshan Kumar

и другие.

ChemistrySelect, Год журнала: 2025, Номер 10(15)

Опубликована: Апрель 1, 2025

Abstract A novel series of tetraaza nickel (II) macrocyclic complexes was prepared via template condensation involving the ligand 2‐[4‐bromo‐2‐(2‐oxo‐1,2‐diphenyl‐ethylideneamino)‐phenylimino]‐1,2‐diphenyl‐ethanone (ML) and selected diamines, such as 4‐chloro 1,2‐phenylenediamine, 4‐bromo 1,2‐diaminotoluene, 4‐nitro 1,2‐diaminopropane, ethylenediamine, in presence NiCl 2 .6H O. The its resulting were characterized through elemental analysis, molecular weight determination, a range spectral techniques, including IR, electronic spectra, 1 H NMR, mass spectrometry, X‐ray powder diffraction, DFT‐assisted structural characterization. DFT (TDDFT/B3LYP/6–311g(d) method) analysis representative Ni(II) supports plausible structures proposed based on spectroscopic studies. These analyses suggest that each complex adopts six‐coordinated octahedral geometry. Their redox behavior examined detail using cyclic voltammetry (CV). Furthermore, new tested for their antimicrobial, antioxidant, antidiabetic, antituberculosis activities. Antimicrobial tests conducted against E. coli, B. subtilis, A. niger , P. chrysogenum synthesized compounds. antioxidant properties assessed DPPH assay showed [Ni(C 41 29 BrCl N 4 )] exhibited highest activity, with an IC 50 value 89.13 mg/mL. Additionally, antimycobacterial where 40 3 demonstrated significant effectiveness inhibiting growth Mycobacterium tuberculosis .

Язык: Английский

Процитировано

0