Northwestern University

King Abdulaziz City for Science and Technology

J Fraser Stoddart

Samuel I Stupp

Alok S Tayi

Ashwin Narayanan

Chi-Hau Sue

Alexander K Shveyd

Zhichang Liu

Jonathan Christopher Barnes

Marco Frasconi

Jeremiah J Gassensmith

Ross S Forgan

Ronald A Smaldone

Dennis Cao

Srinivasan Sampath

Ashish Neil Basuray

Omar K Farha

Junling Sun

Penghao Li

Hao Li

Karel J Hartlieb

Michal Jurícek

Alyssa-Jennifer Avestro

Zachary B Erno

Henri-Pierre Jacquot De Rouville

Alex K Shveyd

Andrew C H Sue

Albert C Fahrenbach

Dongyang Chen

Zhijie Chen

A series of isoreticular metal-organic frameworks composed of metal nodes connected by rigid trigonal prismatic organic linkers and having a 6,12-coordinatled alb network topology are provided. Also provided are methods of synthesizing the metal-organic frameworks and methods of using the metal-organic frameworks to catalyze the hydrolysis of organic molecules, such as nerve agents, having hydrolysable bonds.

Ligand-directed reticular synthesis of metal-organic frameworks having edge-transitive ALB network topologies

Provided herein are systems and devices comprising rigid macrocyclic and nanoporous compositions of electronically coupled naphthalenediimide redox-active units and methods of preparation and use thereof, for example, in the field of energy generation and storage.

Rigid naphthalenediimide triangle structures

Methods for recovering gold from gold-bearing materials are provided. The methods rely upon on the self-assembly of KAuBrand &#x3b1;-cyclodextrin (&#x3b1;-CD) in aqueous solution to form a co-precipitate, a 1:2 complex, KAuBr&#x2022;(&#x3b1;-CD)('&#x3b1;&#x2022;Br'), either alone or in an extended {[K(OH)][AuBr]&#x2282;(&#x3b1;-CD)}chain superstructure (FIG.). The co-precipitation of &#x3b1;&#x2022;Br is selective for gold, even in the presence of other metals, including other square-planar noble metals. The method enables one to isolate gold from gold-bearing materials from diverse sources, as further described.

Compounds and methods to isolate gold

Disclosed are cyclodextrin-based metal organic frameworks comprising a metal cation and cyclodextrin or a cyclodextrin derivative. These metal organic frameworks are permanently porous and capable of molecule storage.

Nanoporous carbohydrate frameworks and the sequestration and detection of molecules using the same

Organic charge-transfer (CT) co-crystals in a mixed stack system are disclosed, wherein a donor molecule (D) and an acceptor molecule (A) occupy alternating positions (DADADA) along the CT axis. A platform is provided which amplifies the molecular recognition of donors and acceptors and produces co-crystals at ambient conditions, wherein the platform comprises (i) a molecular design of the first constituent (&#x3b1;-complement), (ii) a molecular design of the second compound (&#x3b2;-complement), and (iii) a solvent system that promotes co-crystallization.

Modular supramolecular approach for co-crystallization of donors and acceptors into ordered networks

Organic charge-transfer (CT) co-crystals in a crossed stack system are disclosed. The co-crystals exhibit bidirectional charge transfer interactions where one donor molecule shares electrons with two different acceptors, one acceptor face-to-face and the other edge-to-face. The assembly and charge transfer interaction results in a pleochroic material whereby the optical absorption continuously changes depending on the polarization angle of incident light.

Supramolecular networks with electron transfer in two dimensions

Methods of making diazaperopyrenium dications with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, and uses thereof are provided.

Methods of making diazaperopyrenium dications and uses thereof

Novel tetracationic cyclophanes incorporating &#x3c0;-electron poor organic compounds into their ring structures, as well as methods of making the cyclophanes, are provided. The cyclophanes are able to form electron donor-acceptor complexes with a variety of polyaromatic hydrocarbons (PAHs) ranging in size, shape, and electron density. Also provided are methods of using the cyclophanes in the sequestration of PAHs in liquid or gaseous samples, the separation of PAHs from liquid or gaseous samples, the detection of PAHs in liquid samples, and the exfoliation of graphene via pseudopolyrotaxane formation.

Tetracationic cyclophanes and their use in the sequestration of polyaromatic hydrocarbons by way of complexation

Described herein are methods of generating 4,4'-bipyridinium radical cations (BIPY), and methods for utilizing the radical-radical interactions between two or more BIPYradical cations that ensue for the creation of novel materials for applications in nanotechnology. Synthetic methodologies, crystallographic engineering techniques, methods of physical characterization, and end uses are described.

Crystalline bipyridinium radical complexes and uses thereof

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Evanston, IL, United States of America

J Fraser Stoddart