Results 51 to 60 of about 87,831 (289)

Engineering Metal‐Pocket Cooperativity in Single‐Atom COF Nanozymes for Selective Cascade Catalysis

Advanced Materials, EarlyView.
A multilevel programming strategy is developed to engineer single‐atom COF nanozymes with tunable metal centers and chiral pockets inspired by heme–pocket cooperativity. This approach enables controlled metal–pocket interplay for asymmetric cascade catalysis, delivering high activity, selectivity, and recyclability in an asymmetric oxidation–aldol ...
Ziping Li, Qijun Sun, Yawen Hao, Haotian Wen, Shery Chang, Fengwang Li, Jiangtao Xu, Kang Liang   +7 more
wiley   +1 more source

Excited-State Dynamics Leading Either to Triplet Formation or Coordinative Expansion following Photolysis of Cu(II)-Porphyrins: A DFT, TD-DFT, Luminescence and Femtosecond Time-Resolved Absorbance Study

Molecules, 2023
The photophysical properties of Cu(II) complexes with 5,10,15,20-meso-tetrakis(phenyl)porphyrin and 5,10,15,20-meso-tetrakis(N-methylpyridium-4-yl)porphyrin are examined via the luminescence and femtosecond time-resolved absorbance methods, respectively.
Ross J. McGarry, Lazaros Varvarezos, Mary T. Pryce, Conor Long   +3 more
doaj   +1 more source

Fullerene—Porphyrin Constructs [PDF]

ChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Boyd, Peter DW, Reed, Christopher A
openaire   +4 more sources

Porphyrin-Conjugated Microporous Polymer Nanospheres as Electrocatalysts for Nitrobenzene Detection and Oxygen Evolution Reaction

, 2023
Using pyrrole and terephthalaldehyde as raw materials, porphyrin-conjugated microporous polymer (CMP) without metal centers in the porphyrin ring was synthesized directly via the one-step method.
Mingyang Tan (14664114), Abing Guo (14664111), Weijun Yang (560411), Yajun Fu (2141335), Weiping Luo (2814742), Xin Wang (91924)   +5 more
core   +1 more source

Side‐Chain‐Induced Interlayer Slipping in Metalloporphyrin COFs Enables Microenvironment and Spin‐State Regulation for Photocatalytic CO2 Reduction

Advanced Materials, EarlyView.
Alkoxy chain length drives a continuous transition from eclipsed AA to a serrated, slipped AA* configuration over Co‐porphyrin COFs. A moderate slip both contracts the pore channel to enrich CO2 and suppress hydrogen evolution, and enhances collective high‐spin of Co sites, which delivers a record CO production rate with high selectivity.
Jie He, Qingxuan Chen, Minxian Zhang, Wenhao Zhao, Aoni Xu, Jinqiang Zhang, Hongqi Sun, Shaobin Wang, Xiaoguang Duan   +8 more
wiley   +1 more source

A New Modified Electrode with a Copolymer of Aniline/Fe(III)-Tetrakis(Para-Aminophenyl)Porphyrin: Test of Its Electrocatalytic Activity Toward the Reduction of Molecular Oxygen and Oxidation of Ascorbic Acid and Sulfite Ion.

International Journal of Electrochemical Science, 2012
The simultaneous electropolymerization of aniline and Fe-porphyrin in HCl by cycling the potential on glassy carbon (GC) and highly ordered pyrolytic graphite (HOPG) electrodes was studied by Scanning Electron Microscopy (SEM), Atomic Force Microscopy ...
Mauricio Lucero, Maritza Riquelme, Galo Ramírez, M. Carmen Goya, Alejandro González Orive, Alberto Hernández Creus, M. Carmen Arévalo, María J. Aguirre   +7 more
doaj   +1 more source

Interlocked Porphyrin Switches [PDF]

Chemistry – A European Journal, 2013
AbstractWe describe the synthesis of a series of interlocked structures from porphyrin–glycoluril cage compounds and bis(olefin)‐terminated viologens by an olefin‐metathesis protocol. The length of the chain connecting the olefin substituents with the viologen has a marked effect on the products of the ring‐closure reaction.
Coumans, R.G.E., Coumans, R.G.E., Elemans, J.A.A.W., Rowan, A.E., Rowan, A.E., Nolte, R.J.M.   +5 more
openaire   +7 more sources

Biofilm‐Binding Phages Enhance Biofilm Eradication by Synergistic Photothermal and Photodynamic Therapy

Advanced Science, EarlyView.
Engineered phage‐based trifunctional nanofibers are developed for synergistic biofilm eradication. Biofilm‐binding phages, armed with AuNPs and TCPP, serve as both warheads and scaffolds, endowing the phototherapy agents with biofilm‐anchoring ability. Upon light irradiation, AuNPs induce photothermal therapy, while TCPP generates 1O2 for photodynamic ...
Ying Cao, Tao Yang, Rui Wang, Hui‐Da Li, Xiao‐Yu Zhang, Feng Cheng, Ying Liu, Jian‐Hua Wang, Ting Yang, Chuanbin Mao   +9 more
wiley   +1 more source

En Route to a Chiral Melanin: The Dynamic “From-Imprinted-to-Template” Supramolecular Role of Porphyrin Hetero-Aggregates During the Oxidative Polymerization of L-DOPA

Frontiers in Chemistry, 2020
Chiral porphyrin hetero-aggregates, produced from meso-tetrakis(4-N-methylpyridyl) porphyrin H2T4 and copper(II) meso-tetrakis(4-sulfonatophenyl)porphyrin CuTPPS by an imprinting effect in the presence of L-3,4-dihydroxyphenylalanine (L-DOPA), are shown ...
Massimiliano Gaeta, Rosalba Randazzo, Valentina Villari, Norberto Micali, Alessandro Pezzella, Roberto Purrello, Marco d'Ischia, Alessandro D'Urso   +7 more
doaj   +1 more source

Porphyrin-Containing Molecular Capsules:  Metal Mediated Dimerization of a Bis-Porphyrin Cavity

, 2016
A self-complementary V-shaped bis-porphyrin cavity has been synthesized that is capable of dimerization to form a capsule structure. Self-assembly of the dimer occurs via metal ion coordination and produces an internal volume for guest ...
Ronald N. Warrener (2491501), Melissa J. Latter (2539993), Martin R. Johnston (2130757)   +2 more
core   +1 more source