Related Experiment Video
Updated: Jan 30, 2026

Heterogeneous Removal of Water-Soluble Ruthenium Olefin Metathesis Catalyst from Aqueous Media Via Host-Guest Interaction
Published on: August 23, 2018
A Visible-Near-Infrared Light-Responsive Host-Guest Pair with Nanomolar Affinity in Water
Pedro Ferreira1, Barbara Ventura2, Andrea Barbieri2
1Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departmento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal.
Abstract:
The discovery of stimuli-responsive high affinity host-guest pairs with potential applications under biologically relevant conditions is a challenging goal. This work reports a high-affinity 1:1 complex formed between cucurbit[8]uril and a water-soluble photochromic diarylethene derivative. It was found that, by confining the open isomer within the cavity of the receptor, a redshift in the absorption spectrum and an enhancement of the photocyclization quantum yield from Φ=0.04 to Φ=0.32 were induced. This improvement in the photochemical performance enables quantitative photocyclization with visible light that, together with the near-infrared light-induced ring-opening reaction and the 100-fold selectivity for the closed isomer, confirms this as an outstanding light-responsive affinity pair.
More Related Videos
10:26Soft Lithographic Procedure for Producing Plastic Microfluidic Devices with View-ports Transparent to Visible and Infrared Light
Published on: August 17, 2017
07:38Characterization of Biological Absorption Spectra Spanning the Visible to the Short-Wave Infrared
Published on: January 10, 2025
Related Concept Videos
Affinity and Avidity
Photoreceptors and Plant Responses to Light
Electron Affinity
DNA Base Pairing
VSEPR Theory and the Effect of Lone Pairs
Sign Test for Matched Pairs
To conduct the sign test, we first calculate the differences in...