Leland Stanford Junior University

Massachusetts Institute of Technology

King Abdullah University of Science and Technology

Yan Xia

Ingo Pinnau

Xiaohua Ma

Zachary Pace Smith

Francesco M Benedetti

Holden Wan Hong Lai

Junzhe Lou

Ovijit Chaudhuri

Jun Myun Ahn

Sheng Liu

Holden W H Lai

Disclosed herein are ladder polymers comprising fused aromatic and non-aromatic rings. Also disclosed are the manufacture and use of these ladder polymers, e.g., in separation membranes, such as membrane for gas separation.

High-performance ladder polymers for membrane gas separation

Embodiments of the present disclosure feature an intrinsically microporous ladder-type Tröger's base polymer including a repeat unit based on a combination of W-shaped CANAL-type and V-shaped Tröger's base building blocks, methods of making the intrinsically microporous ladder-type Tröger's base polymer, and methods of using the intrinsically microporous ladder-type Tröger's base polymer to separate a chemical species from a fluid composition including a mixture of chemical species. Embodiments of the present disclosure further include ladder-type diamine monomers for reacting to form a Tröger's base in situ, and methods of making the ladder-type diamine monomers using catalytic arene-norbornene annulation.

Intrinsically microporous ladder-type Tröger's base polymers

A hydrogel composition includes: (1) a polymer network including a first water-soluble polymer and a second water-soluble polymer that are crosslinked through dynamic bonds; and (2) a catalyst to modulate a rate of exchange of crosslinking of the polymer network.

Injectable and stable hydrogels with dynamic properties modulated by biocompatible catalysts

A molecule includes at least one moiety represented by: where R, R, R, and Rare independently selected from hydride group and groups different from hydride group, and Xand Xare bridging moieties including a carbon atom or a heteroatom.

Efficient synthesis of rigid ladder polymers

Growing community of inventors

Stanford, CA, United States of America

Yan Xia