Northwestern University

Emily A Weiss

Chen Wang

Andrew Lee

Chen He

Jeremiah Yoonsung Kim

David J Weinberg

Stephen C Jensen

Ofer Kedem

Yishu Jiang

Bryan Lau

Cameron R Rogers

Mohamad S Kodaimati

The present technology is directed to the nanoparticles for use as molecular environmental sensors. The nanoparticles comprise a photoluminescence core and a plurality of ligands bound to the core and forming a quencher permeable ligand shell. The ligands comprise a reactive or charged moiety capable of being modulated between a first stand and a second state, and the proportion of ligands in each state determine the permeability of the ligand shell to a photoluminescence quencher.

Control of the electrostatic potential of nanoparticles

Disclosed herein are methods in which colloidal quantum dots (QDs) can serve as visible-light chromophores, photocatalysts, and reusable scaffolds for homo- and hetero-intermolecular [2+2] photocycloadditions. The methods may lead to &#x3e;90% tunable regioselectivity and up to 98% diastereoselectivity for previously minor syn-cyclobutane products, including the syn-head-to-tail cyclobutane.

Cycloaddition reactions using quantum dots

Provided herein are compositions comprising cadmium sulfide quantum dot photocatalysts and methods and systems utilizing as much (e.g., for the reduction of a nitrobenzene to an aniline).

Cadmium sulfide quantum dots

Provided herein are flashing ratchets that produce transport based on the oscillating application of regularly-spaced, asymmetric potentials. In particular, devices are provided that transport electrons without the requirement of an overall source-drain bias favoring electron transport.

Flashing ratchets

Growing community of inventors

Evanston, IL, United States of America

Emily A Weiss