Results 31 to 40 of about 47,133 (204)

Hybrid Framework Materials: Next‐Generation Engineering Materials

Advanced Engineering Materials, EarlyView.
Hybrid organic–inorganic materials merge the unique properties of organic and inorganic compounds, enabling applications in optoelectronics, gas storage, and catalysis. This review explores metal‐organic frameworks, hybrid organic–inorganic perovskites, and the emerging field of hybrid glasses, emphasizing their structures, functionalities, and ...
Jay McCarron, Bethan Turner, Lauren N. McHugh   +2 more
wiley   +1 more source

Hydrogen atom/molecule adsorption on 2D metallic porphyrin: A first-principles study [PDF]

arXiv, 2023
Hydrogen is a promising element for applications in new energy sources like fuel cells. One key issue for such applications is storing hydrogen. And, to improve storage capacity, understanding the interaction mechanism between hydrogen and possible storage materials is critical.
arxiv  

Cretaceous-Tertiary boundary layer at Stevns Klint (Denmark): copper and copper(II) porphyrins [PDF]

Journal of the Serbian Chemical Society, 1999
High concentrations (up to 4000 ppm) of copper(II) porphyrins have been detected in the kerogen of the Cretaceous/Tertiary (KT) boundary informal type sediment, the Fish Clay, at Stevns Klint, Denmark. These pigments have also been found in the Danish KT
PAVLE I. PREMOVIC, NIKOLA D. NIKOLIC, IVANA R. TONSA, DEJAN T. DULANOVIC, MIRJANA S. PAVLOVIC   +4 more
doaj   +2 more sources

Constructing Covalent Organic Polymers through Dative B─N Bonds: Synthesis, Single Crystal Structures, and Physical Properties

Advanced Functional Materials, EarlyView.
Dynamic linkages are highly attractive in preparing single crystals of covalent organic polymers (COPs). Here, single crystals of two COPs CityU‐15 and CityU‐16 based on reversible B─N bonds are constructed using tetra(4‐pyridyl)tetrathiafulvalene and tetra(4‐pyridyl)porphine as monomers.
Xin Wang, Lei Zhang, Xiang Wang, Tianqi Cheng, Miaomiao Xue, Qiang Dong, Yungkang Peng, Qichun Zhang   +7 more
wiley   +1 more source

Unusual Bandgap Oscillations in Template-Directed π-Conjugated Porphyrin Nanotubes [PDF]

Journal of Physical Chemistry Letters, 7, 2362 (2016), 2018
Using large-scale DFT calculations (up to 1,476 atoms and 18,432 orbitals), we present the first detailed analysis on the unusual electronic properties of recently synthesized porphyrin nanotubes. We surprisingly observe extremely large oscillations in the bandgap of these nanostructures as a function of size, in contradiction to typical quantum ...
arxiv   +1 more source

Synthesis, Photophysical Properties, and Toxicity of o-Xylene-Bridged Porphyrin Dimers

Inorganics, 2023
In this work, a number of new porphyrin dimers coupled with spacers based on α,α’-dibromo-o-xylene were synthesized and characterized by 1H, 13C NMR, 1H-1H COSY NMR, UV-vis-spectroscopy, and MALDI-TOF mass spectrometry.
Kseniya A. Zhdanova, Andrey A. Zaytsev, Margarita A. Gradova, Oleg V. Gradov, Anton V. Lobanov, Alexander S. Novikov, Natal’ya A. Bragina   +6 more
doaj   +1 more source

2D Vermiculite Nanolaminated Membranes for Efficient Organic Solvent Nanofiltration

Advanced Functional Materials, EarlyView.
Intercalating multivalent cations into 2D vermiculite nanolaminates significantly improves the structural stability and sieving capabilities of membranes in both aqueous and organic media, rendering them effective for organic solvent nanofiltration. Abstract Membrane separation technology has found widespread application in molecular sieving and water ...
Wensen Wang, Xishun Hao, Youguo Yan, Rong Sun, Eddy Petit, Mathilde Moderne, Ji Li, Jiefeng Liu, Huali Wu, Kun Qi, Camilo Zamora‐Ledezma, Christian Narváez‐Muñoz, Camille Bakkali Hassani, Luc Lajaunie, Philippe Miele, Chrystelle Salameh, Zhiyuan Zeng, Damien Voiry   +17 more
wiley   +1 more source

Reductive Functionalization of Graphenides with Nickel(II) Porphyrin Diazonium Compounds [PDF]

Phys. Status Solidi RRL 2017, 1700306, 2018
A novel type of a graphene/porphyrin hybrid with a direct covalent linker between graphene and a nickel(II) tetraphenylporphyrin unit has successfully been synthesized by the reductive exfoliation/functionalization of potassium intercalated graphite as starting material.
arxiv   +1 more source

Recent Advances in Single‐Atom Catalyst for Solar Energy Conversion: A Comprehensive Review and Future Outlook

Advanced Functional Materials, EarlyView.
This review highlights the potential of single‐atom catalysts in three key photocatalytic reactions: the hydrogen evolution reaction (HER), nitrogen reduction reaction for ammonia synthesis, and carbon dioxide reduction reaction (CO2RR) for chemical fuels.
Saad Mehmood, Saddam Sk, B. Moses Abraham, Mohsen Ahmadipour, Ujjwal Pal, Joydeep Dutta   +5 more
wiley   +1 more source

Synthesis of 5-(4-X-Phenyl)-10,15,20-tris(Substituted Phenyl) Porphyrins Using Dipyrromethanes

Molecules, 2001
5-(4-X-Phenyl)-10,15,20-tris(substituted phenyl) porphyrins (4-6) were synthesized from meso-(substituted phenyl) dipyrromethanes (1-3), which in turn were prepared in yields of 75-92 %.
Edgardo N. Durantini
doaj   +1 more source