Colorimetric assays have drawn increasing research interest with respect to the quantitative detection of hydrogen peroxide (H2O2) based on artificial enzymes because their advantages natural enzymes, including design flexibility, low cost, and high stability. Regardless, majority exhibit affinity H2O2 large Michaelis–Menten constants (Km). This indicates that catalytic oxidation 3,3′,5,5′-tetramethylbenzidine (TMB) blue-colored oxTMB requires a concentration, hindering sensitivity...

An optically active porphyrin–pentapeptide conjugate 1, actually a porphyrinato zinc complex covalently linked with glycinyl–alanyl–glycinyl–alanyl–glycine (GAGAG) peptide chain, was designed and synthesized. The self-assembly properties of this novel in THF/n-hexane THF/water were comparatively investigated by electronic absorption, circular dichroism (CD), IR spectroscopy, transmission electron microscopy (TEM), scanning (SEM), X-ray diffraction (XRD) technique. Associated the different...

Cystosepiment-like cobalt nanoparticles@N-doped carbon composite named Co-NPs@NC with highly efficient electrocatalytic performance for oxygen evolution reaction was prepared from carbonization of N-doped Co-MOFs. The optimized Co-NPs@NC-600 shows overpotentials 315 mV to afford a current density 10 mA·cm-2. Meanwhile, the electrocatalys presents excellent long-term durability. outstanding can be attributed unique cystosepiment-like architecture high specific surface area (214 m2/g),...

A Cd-MOF was constructed based on 3,5-bis(4-carboxyphenyl) pyridine under solvothermal conditions. Its structure and phase purity were verified by single-crystal X-ray diffraction. Thereafter, some studies the morphology, structure, luminescent properties of compound carried out. The exhibited a highly sensitive response to Fe3+, Cr(IV), trinitrophenol (TNP), colchicine fluorescence-quenching mechanism. possible mechanism luminescence quenching discussed in detail.

A 3D porous framework ([Co1.5(tib)(dcpna)]·6H₂O) (1) with a Wei topology has been synthesized by solvothermal reaction of 1,3,5-tris(1-imidazolyl)-benzene (tib), 5-(3',5'-dicarboxylphenyl)nicotinic acid (H₃dcpna) and cobalt nitrate. The electrocatalytic activity for water oxidation 1 investigated in alkaline solution. Compound exhibits good oxygen evolution (OER) activities solution, exhibiting 10 mA·cm-2 at η = 360 mV Tafel slope 89 mV·dec-1. high OER can be ascribe to 1D open channels...

(R)- and (S)-Enantiomers of optically active metal free tetrakis[11,12:13,14-di(1′,2′-naphtho)-1,4,7,10,15,18-hexaoxacycloeicosa-2,11,13-trieno]-phthalocyanine their zinc complexes, (S)-H2Pc (1) (S)-ZnPc (2), were prepared from the tetramerization corresponding phthalonitriles, (S)-2,3-(4′,5′-dicyanobenzo)-11,12:13,14-di(1′,2′-naphtho)-1,4,7,10,15,18-hexaoxacycloeicosa-2,11,13-triene, in absence presence Zn(OAc)2·2H2O template, respectively, promoted by organic base...

With the view to creating novel sandwich-type tetrapyrrole rare earth complexes toward potential applications in material science and chiral catalysis, two new optically active mixed (phthalocyaninato)(porphyrinato) triple-decker with both (R)- (S)-enantiomers [M2(Pc)2(TCBP)] {TCBP = Meso-tetrakis [3,4-(11,12:13,14-di(1′,2′-naphtho)-1,4,7,10,15,18-hexaoxacycloeicosa-2,11,13-triene)-phenyl] porphyrinate; M Eu (1), Y (2)} have been designed prepared by treating metal free porphyrin...

Abstract An optically active metal‐free porphyrin ( 1 ) with four chiral binaphthyl units attached at the meso ‐phenyl substituents through crown ether moieties has been designed, synthesized, and characterized. Its self‐assembly behavior in absence presence of K + was comparatively investigated by electronic absorption circular dichroism (CD) spectra, transmission electron microscopy (TEM), scanning (SEM), atom force (AFM), energy‐dispersive X‐ray (EDX) spectroscopy. In , self‐assembles...

Searching for new low-dimensional organic-inorganic hybrid phosphors is of great significance due to their unique optical properties and wide applications in the optoelectronic field. In this work, we report a Mn4+ doped zero-dimensional phosphor [N(CH3)4]2ZrF6, which was synthesized by wet chemical method. The crystal structure, thermal stability, were systemically investigated means XRD, SEM, TG-DTA, FTIR, DRS, emission spectra, excitation as well decay curves. Narrow red with high color...

Abstract Optically active metal‐free phthalocyanine ( 1 ) decorated with four octyl chains linked through binaphthyl units to the ring was designed and prepared. This compound characterized by a wide range of spectroscopic methods in addition elemental analysis. By employing solution injection method, both R S enantiomers self‐assemble into nanoparticles. Surprisingly, small amount cetyltrimethylammonium bromide (CTAB), nanostructures hollow‐sphere morphologies were formed. The...

It is critical to develop efficient oxygen evolution reaction (OER) catalysts with high catalytic properties for overall water splitting. Electrocatalysts enriched vacancies are crucial enhancing the activity of OER through defect engineering. We demonstrated dealloying method in a reducing alkaline solution using Co5Al95 alloy foil as precursor produce new oxygen-vacancy-rich cobalt hydroxide (OV−Co(OH)2) hierarchical dendrite. The as-synthesised OV−Co(OH)2 showed superior electrocatalytic...

Designing and preparing highly active oxygen evolution reaction (OER) electrodes are essential for improving the overall efficiency of water splitting. Increasing number sites is simplest way to enhance OER performance. Herein, we present a dealloy-etched Ni–Fe foam with hierarchical nanoporous structure as integrated excellent performance OER. Using dealloying method on framework, produced, which named Ni–Fe@Ni–Fe (NP-NF@NFF). Because peculiarities method, NP-NF@NFF produced contains...

The self-assembly behavior of two sandwich-type mixed (phthalocyaninato)(porphyrinato) europium double-decker complexes, namely Eu(Pc)(TClPP) [Pc = phthalocyaninate; TClPP meso-tetrakis(4-chlorophenyl)porphyrinate] (1) and optically active (R)- (S)-EuH[Pc(OBNP)(2)](TClPP)] [Pc(OBNP)(2) phthalocyaninate with aromatic chiral binaphthayl units attached at the nonperipheral positions] (2), has been comparatively studied. In addition, a hydrophilic additive intense adhesive ability, sodium...

Three sandwich-type (phthalocyaninato)(porphyrinato) europium triple-decker complexes, namely Eu(2)(Pc)(2)(TClPP) (1), Eu(2)[Pc(β-OC(4)H(9))(8)](2)(TClPP) (2), and Eu(2)[Pc(β-OC(8)H(17))(8)](2)(TClPP) (3), have been designed, synthesized, fabricated into nanotubes using nanoporous anodized aluminium oxide (AAO) membrane as the template. In particular, effects of peripheral-substituents at two phthalocyanine ligands in molecule on molecular stacking relative to alumina surface packing mode...

Diketofurofuran derivatives show comparable singlet fission relevant excited state energies with diketopyrrolopyrrole analogues and tetracene.