Covalent organic frameworks provide a platform for the integration of functional linkers into ordered yet tunable two-dimensional to yield π–π stacked conjugated materials photocatalytic water splitting hydrogen generation.

Functionalized cobalt porphyrin immobilized multiwalled carbon nanotubes are synthesized and characterized. These new materials efficiently electrocatalyze oxygen reduction they have potential to replace conventional Pt–C catalyst in fuel cells.

The utilization of carbon dioxide (CO2) as a C1 source coupled with olefins, readily accessible feedstocks, offers dual advantages mitigating atmospheric and green synthesis valuable chemicals. In this regard, herein we demonstrate the application Fe(III)-anchored porphyrin-based covalent organic framework (P-COF) promising recyclable catalyst for one-step generation cyclic carbonates (CCs), value-added commodity chemicals from olefins CO2, under mild pressure conditions. Moreover, one-pot...

The growing Perovskite solar cells (PSC) reached a power conversion efficiency of up to 25% within decade and demonstrated capabilities replace traditional silicon-based cells. However, the major...

Five cost-effective porphyrin based sensitizers with various donor groups (bisthiophene, N,N-dimethylaminophenyl, triphenylamine, carbazole and phenothiazine) meso-dimesityl as auxiliary have been synthesized through the shortest possible synthetic route for practical commercialization of these dyes. trans-A2BC dyes show power conversion efficiencies (η) ranging from 5.3% to 7.11% under 1 sun illumination highly depend on strength appended moiety. Our molecular design incorporates...

Abstract Three new ‘push‐pull’ A 3 B Zn(II)porphyrin dyes having meso ‐pyrenyl, carbazolyl and phenothiazine as electron donors ( ) phenylcarboxylic acid acceptor/anchor were synthesized utilized for DSSC application. The spectral electrochemical redox properties of these studied compared with trans ‐A 2 BC Zn(II) porphyrin under similar experimental conditions. Red‐shifted, broadened absorption peaks, lower fluorescence quantum yields, shortened lifetimes observed the to zinc...

Abstract Exploratory experiments were performed to test the feasibility of coagulation and flocculation as a post‐treatment process for effluent an Upflow Anaerobic Sludge Blanket (UASB) reactor treating domestic sewage. Commonly used coagulants [alum, polyaluminium chloride (PAC), ferric chloride, sulphate] utilized in series jar tests determine optimum coagulant dose. The total fecal coliforms less than 100,000 MPN/100 mL 10,000 mL, respectively. It was found that all tested effective...

Mono-/tri-β-substituted metalloporphyrins have been synthesized and characterized. Dramatic reduction in the HOMO–LUMO gap with tunable electronic, spectral electrochemical redox potentials were observed as number of electron withdrawing groups increased.

Covalent organic frameworks (COFs) with high porosity and redox-active properties have been advanced as electrode materials for energy storage systems, although poor electron conductivity inaccessibility of active pore sites hinder their performance material supercapacitor application. Thus, incorporation a COF various conductive can be an effective strategy to improve electrochemical performances supercapacitors. Herein, we report the synthesis POR-COF@g-C

Abstract A series of π‐conjugated mono‐ β ‐functionalized donor−acceptor porphyrin dyads ( 1 – 4 ) with various donor groups (phenyl, naphthyl, anthracenyl and pyrenyl) their metal complexes (M=Zn( a ), Cu( b Co( c Ni( d )) were synthesized characterized by spectroscopic electrochemical techniques. modified one‐step Horner‐Wadsworth‐Emmons reaction was performed on monoformyl to get ethenyl‐linked ‐porphyrin in good excellent yields (70–90 %). Red‐shifted absorption emission spectra observed...

Asymmetrically meso -substituted porphyrins constitute a promising group of nonlinear optical (NLO) materials due to high nonlinearities upon irradiation with intensity laser light. 1a The major advantage is their chemical versatility which provides tool for tailoring the linear and NLO properties specific applications. 1b Particularly, push-pull have potential applications in optics, photodynamic therapy (PDT), 1c dye-sensitized solar cell (DSSC). 1d Meso been widely explored ease synthesis...

Among the different approaches for β -functionlization of poprhyrins, a limited number -arylamino functionalized poprhyirns were reported. 1 Porhyrins and metallopoprhyrins that consist arylamino group have exhibited unique physiochemical electrochemical redox properties utilized various applications such as dye-sensitized solar cells (DSSCs), catalysis, nonlinear optics. 2 In this regard, we report regioselective synthesis 2-arylamino-12,13-dibromo-5,10,15,20-tetraphenylporphyrins their...

β -functionalized porphyrins possess interesting photophysical, electrochemical and conformational properties that can be useful for applications in the area of non-linear optics, catalysis anion sensing. 1 -nitration, -formylation -halogenation have been utilized to prepare starting compounds which further converted into mixed -substituted porphyrins. 2 Only a few having carbon-heteroatoms at their -position are known electronic redox not explored great detail as compared other The...

Two [Formula: see text]-substituted Pd(II) porphyrins, (PdTPP(NO[Formula: text]Ph 2 and PdTPP(Ph)[Formula: text], were synthesized characterized by various spectroscopic techniques, their spectral electrochemical redox properties investigated with respect to PdTPP. The single-crystal X-ray structure of PdTPP(NO[Formula: text]-Ph revealed saddle-shape conformation the macrocyclic core porphyrin. DFT studies nonplanar saddle shape PdTPP(Ph) 4 an average deviation text]-pyrrole carbon atoms...

Antipodal β-diformyl porphyrin (H 2 TPP(CHO) ) and its metal complexes (MTPP(CHO) , M = [Formula: see text], text] are synthesized characterized by various spectroscopic techniques. Diformyl porphyrins possess two electron-withdrawing formyl substituents at their β-pyrrole positions making them electron-deficient macrocycles. UV-Vis absorption spectra of MTPP(CHO) red-shifted as compared to β-monoformyl/hydroxymethyl a further large anodic shift ([Formula: text][Formula: 0.15 - 0.52 V) was...