A5074510664- Metal-Organic Frameworks: Synthesis and Applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Covalent Organic Framework Applications
- Electrochemical Analysis and Applications
- Magnetism in coordination complexes
- Porphyrin and Phthalocyanine Chemistry
- Photochemistry and Electron Transfer Studies
- Molecular Junctions and Nanostructures
- Catalytic Processes in Materials Science
- Machine Learning in Materials Science
- TiO2 Photocatalysis and Solar Cells
- Polyoxometalates: Synthesis and Applications
- Crystallography and molecular interactions
- Advanced Photocatalysis Techniques
- Supramolecular Chemistry and Complexes
- Quantum Dots Synthesis And Properties
- Electrocatalysts for Energy Conversion
- Spectroscopy and Quantum Chemical Studies
- Metal complexes synthesis and properties
- Luminescence and Fluorescent Materials
- Molecular Sensors and Ion Detection
- Lanthanide and Transition Metal Complexes
- Nanocluster Synthesis and Applications
- Conducting polymers and applications
Northwestern University
2015-2024
Argonne National Laboratory
2010-2020
University of Chicago
2020
King Abdulaziz University
2014-2020
Moscow Technological Institute
2016
Northwest University
2000-2015
International Institute for Nanotechnology
2008-2015
King Abdulaziz City for Science and Technology
2015
NIST Center for Neutron Research
2014
National Institute of Standards and Technology
2014
We report on the fabrication and properties of semiconducting 2D (CH3(CH2)3NH3)2(CH3NH3)(n-1)Pb(n)I(3n+1) (n = 1, 2, 3, 4) perovskite thin films. The band gaps series decrease with increasing n values, from 2.24 eV (CH3(CH2)3NH3)2PbI4 1) to 1.52 CH3NH3PbI3 ∞). compounds exhibit strong light absorption in visible region, accompanied by photoluminescence at room temperature, rendering them promising absorbers for photovoltaic applications. Moreover, we find that films semi-2D perovskites...
The hybrid two-dimensional (2D) halide perovskites have recently drawn significant interest because they can serve as excellent photoabsorbers in perovskite solar cells. Here we present the large scale synthesis, crystal structure, and optical characterization of 2D (CH3(CH2)3NH3)2(CH3NH3)n−1PbnI3n+1 (n = 1, 2, 3, 4, ∞) perovskites, a family layered compounds with tunable semiconductor characteristics. These materials consist well-defined inorganic layers intercalated bulky butylammonium...
We have synthesized, characterized, and computationally simulated/validated the behavior of two new metal-organic framework (MOF) materials displaying highest experimental Brunauer-Emmett-Teller (BET) surface areas any porous reported to date (~7000 m(2)/g). Key evacuating initially solvent-filled without pore collapse, thereby accessing ultrahigh areas, is use a supercritical CO(2) activation technique. Additionally, we demonstrate that by shifting from phenyl groups "space efficient"...
A scalable, reproducible method of synthesizing UiO-66- and UiO-67-type MOFs, entailing the addition HCl to reaction mixture, has been investigated. The new protocol requires a fraction time previously reported procedures, yields exceptional porosities, works with range linkers.
The emergence of metal-organic frameworks (MOFs) as functional ultrahigh surface area materials is one the most exciting recent developments in solid-state chemistry. Now constituting thousands distinct examples, MOFs are an intriguing class hybrid that exist infinite crystalline lattices with inorganic vertices and molecular-scale organic connectors. Useful properties such large internal areas, ultralow densities, availability uniformly structured cavities portals molecular dimensions...
A ZIF-8 thin film-based Fabry-Pérot device has been fabricated as a selective sensor for chemical vapors and gases. The preparation of the film series films various thicknesses grown on silicon substrates are presented.
A new microporous metal-organic framework compound featuring chiral (salen)Mn struts is highly effective as an asymmetric catalyst for olefin epoxidation, yielding enantiomeric excesses that rival those of the free molecular analogue. Framework confinement manganese salen entity enhances stability, imparts substrate size selectivity, and permits separation reuse.
We have examined the methane uptake properties of six most promising metal organic framework (MOF) materials: PCN-14, UTSA-20, HKUST-1, Ni-MOF-74 (Ni-CPO-27), NU-111, and NU-125. discovered that a material is commercially available in gram scale, exhibits room-temperature volumetric exceeds any value reported to date. The total about 230 cc(STP)/cc at 35 bar 270 65 bar, which meets new target recently set by Department Energy (DOE) if packing efficiency loss ignored. emphasize MOFs with high...
A simple colorimetric technique for the detection of small concentrations aqueous heavy metal ions, including toxic metals such as lead, cadmium, and mercury, is described. Functionalized gold nanoparticles are aggregated in solution presence divalent ions by an ion-templated chelation process; this causes easily measurable change absorption spectrum particles. The aggregation also enhances hyper-Rayleigh scattering (HRS) response from nanoparticle solutions, providing inherently more...
Metal–organic frameworks (MOFs) have received attention for a myriad of potential applications including catalysis, gas storage, and separation. Coordinatively unsaturated metal ions often enable key functional behavior these materials. Most commonly, MOFs been metalated from the condensed phase (i.e., solution). Here we introduce new synthetic strategy capable metallating phase: atomic layer deposition (ALD). Key to enabling metalation by ALD In (AIM) was synthesis NU-1000, new, thermally...
Porous organic polymers (POPs), a class of highly cross-linked, amorphous possessing micropores, have recently emerged as versatile platform for the deployment catalysts. These materials can be divided into three major classes: POPs that incorporate rigid well-defined homogeneous catalysts building blocks, modified post-synthesis, and encapsulate metal particles. This perspective article summarizes recent developments in POP-based catalysis outlines potential platforms heterogeneous along...
We introduce high surface area ZnO nanotube photoanodes templated by anodic aluminum oxide for use in dye-sensitized solar cells (DSSCs). Atomic layer deposition is utilized to coat pores conformally, providing a direct path charge collection over tens of micrometers thickness. Compared similar ZnO-based devices, show exceptional photovoltage and fill factors, addition power efficiencies up 1.6%. The novel fabrication technique provides facile, metal-oxide general route well-defined DSSC photoanodes.
A pillared-paddlewheel type metal–organic framework material featuring bodipy- and porphyrin-based struts, capable of harvesting light across the entire visible spectrum, has been synthesized. Efficient—essentially quantitative—strut-to-strut energy transfer (antenna behavior) was observed for well-organized donor–acceptor assembly consituting ordered MOF structure.
ConspectusMetal–organic frameworks (MOFs) are periodic, hybrid, atomically well-defined porous materials that typically form by self-assembly and consist of inorganic nodes (metal ions or clusters) multitopic organic linkers. MOFs as a whole offer many intriguing properties, including ultrahigh porosity, tunable chemical functionality, low density. These properties point to numerous potential applications, gas storage, separations, catalysis, light harvesting, sensing, name few. Reticular...
The most efficient dye-sensitized solar cells (DSSCs) have had essentially the same configuration (nanoparticle TiO2 sensitized with [Ru(4,4′-dicarboxy-2,2′-bipyridine)2(NCS)2] in contact I3−/I−) for last 17 years. In this article we outline strategies improving each of three major photo-relevant components a DSSC, review literature reports consistent these and suggest future directions. Finally explore potential generation DSSCs advancing energy-conversion performance.
Realization of heterogeneous electrochemical CO2-to-fuel conversion via molecular catalysis under high-flux conditions requires the assembly large quantities reactant-accessible catalysts on conductive surfaces. As a proof principle, we demonstrate that electrophoretic deposition thin films an appropriately chosen metal–organic framework (MOF) material is effective method for immobilizing needed quantity catalyst. For electrocatalytic CO2 reduction, used contains functionalized Fe-porphyrins...