Photo‐Powered Collapse of Supramolecular Polymers Based on an Overcrowded Alkene Switch

Abstract

A supramolecular polymer was constructed from a light‐driven overcrowded alkene switch modified with two alkylated gallic acid amide pendants (MSP‐1). Upon UV irradiation, stable MSP‐1 isomerized into unstable MSP‐2, which induced the effective collapse of well‐defined cross‐linked supramolecular polymers, and the reassembly can be realized by aging at low temperature.

Visible-Light-Driven Rotation of Molecular Motors in Discrete Supramolecular Metallacycles

“…First, compound 1 was synthesized as described previously. 89 Subsequently, the desired ligand MPY was obtained by a double Suzuki coupling between compound 1 and 4-pyridineboronic acid pinacol ester in 76% yield. The structure of MPY was confirmed using 1 H NMR and 13 C NMR spectroscopy and high-resolution electronic spray ionization (HR-ESI) mass spectrometry (detailed information given in the Supporting Information).…”

“…The synthesis route toward photo- and thermal-responsive molecular-motor-based ligand MPY is shown in Scheme S1. First, compound 1 was synthesized as described previously . Subsequently, the desired ligand MPY was obtained by a double Suzuki coupling between compound 1 and 4-pyridine­boronic acid pinacol ester in 76% yield.…”

Structural transformation of copper coordination complexes accompanied with chiral transformation

“…[16][17][18][19][20][21] It is worth noting that small variations in the synthesis process can affect the final result, which is more obvious for multi-site and soft ligands, 22 and sometimes such differences can be large. In addition, many other factors, such as temperature, 8 solvents, 23,24 reaction pH, 25,26 additives, 27 surfactants, 28 auxiliary ligands, 29 guest molecules, 30 reaction sequence, 17 and light, 31 affect the self-assembly process, hence accurate prediction of the crystal structure is still a major challenge in crystal engineering.…”

Lanthanide contraction effect and white-emitting luminescence in a series of metal–organic frameworks based on 2,5-pyrazinedicarboxylic acid

“…[23][24][25][26][27][28] Still one of the most necessary properties for MOFs is high thermal stability and durability over a wide pH range. 29,30 With the using of rare earth elements into the framework a new subclass was created, named Lanthanide MOFs (LnMOFs) that have demonstrated their uncommon characteristics as catalysts, 31 luminescent sensors, [32][33][34] white light emitting devices 35,36 as well as their role in biomedical applications. 37 The main source of luminescence properties of LnMOFs called "antenna effect" includes the absorption of light by the organic linkers, followed by an energy transfer to the lanthanide metal ions and subsequent emission by them.…”