Cover Feature: Stimuli‐Responsive Chiroptical Switching (ChemPlusChem 2/2022)

Sahoo, Diptiprava; Benny, Renitta; S., Nithish Kumar K.; De, Soumen

doi:10.1002/cplu.202100539

Cited by 7 publications

(14 citation statements)

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“…In this context, light is also advantageous over other stimuli as light does not produce any waste and can be used with high spatial and temporal control. [14] Generally, a light-responsive unit should be attached to the system to fabricate a light-powered autonomous molecular machine. The exact wavelength of light should trigger both switching methods to induce autonomy.…”

Section: Light-powered Molecular Machinesmentioning

confidence: 99%

“…Light is one of the familiar sources of stimuli to control molecular motion. In this context, light is also advantageous over other stimuli as light does not produce any waste and can be used with high spatial and temporal control [14] . Generally, a light‐responsive unit should be attached to the system to fabricate a light‐powered autonomous molecular machine.…”

Section: Design Principlementioning

confidence: 99%

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Recent Advances in Fuel‐Driven Molecular Switches and Machines

et al. 2022

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Section: Light-powered Molecular Machinesmentioning

confidence: 99%

Section: Design Principlementioning

confidence: 99%

Recent Advances in Fuel‐Driven Molecular Switches and Machines

et al. 2022

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“…Moreover, the chiral switch can control the properties of specific stereoisomers of the guest depending on the chiral selection between the host and guest. [10] Here we delineate the design, synthesis, characterisation and light-induced reversible switching between two states of a chiral photo-switchable molecular plier. Furthermore, zinc porphyrins are a well-known host for pyridine-type ligands.…”

Section: Introductionmentioning

confidence: 99%

Light‐Triggered Reversible Open‐Close Motion of a Chiral Molecular Plier to Modulate Guest Binding

Sahoo

Majeed

Lathwal

et al. 2023

Chemistry A European J

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A chiral molecular plier's design, synthesis, characterisation and operations are presented. The molecular plier encompasses three units: a BINOL unit which acts as a pivot as well as a chiral inducer, an azobenzene unit, which acts as a photo-switchable component and two zinc porphyrin, acting as a reporter. E to Z isomerisation persuaded by irradiating with 370 nm light alters the dihedral angle of the pivot BINOL unit, which adjusts the distance between two porphyrin units. The plier can be switched to its initial state by exposure to 456 nm light or heating at 50 °C. NMR, CD and molecular modelling supported the reversible switching and change in dihedral angle and distance between reporter moiety, which was further exploited for binding with several ditopic guests. The longest guest was found to form the strongest complex, R,R-isomer formed a stronger complex than S,S-isomer, Z-isomer of the plier formed stronger complex than the E-isomer with the guest. Moreover, complexation also increased the E-to-Z switching efficiency and decreased the thermal back isomerisation of the azobenzene unit.

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“…The current researches on main‐chain helical polymers mainly focus on a dissolved system at the molecular level, a specific self‐assembly morphology is generally not considered. However, the morphology is exactly important in polymer chiral systems since it may influence the chiral expression of the polymers [30] . The peculiar and fascinating morphology of helical polymers in dispersions can be directly observed using various microscopic techniques, such as scanning tunneling microscopy, atomic force microscopy, scanning electron microscopy, and transmission electron microscopy [31] .…”

Section: Introductionmentioning

confidence: 99%

Chiral Expression and Morphology Control in Polymer Dispersion Systems

Cheng

Miao

et al. 2022

ChemPlusChem

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The chiral self‐assembly of polymers in dispersions plays an important role in chiral chemistry and self‐assembly. In general, both polymerization‐induced self‐assembly (PISA) and post‐polymerization self‐assembly can be used to prepare polymer nanoassemblies. In chirality induction or transfer processes, the self‐assembly manner of the polymers greatly affects the chiral expression of the nanostructure and cannot be ignored in the chiral fields. Moreover, unique chiral expression and morphological transition of polymer assemblies in dispersions enable the preparation of advanced functional chiroptical materials. Herein, this Review discusses recent advances in chiral expression and morphology control in polymer dispersion systems, particularly the comparison between traditional post‐polymerization self‐assembly and in situ PISA strategies, to predict and advance chirality control in polymers.

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Cover Feature: Stimuli‐Responsive Chiroptical Switching (ChemPlusChem 2/2022)

Cited by 7 publications

References 0 publications

Recent Advances in Fuel‐Driven Molecular Switches and Machines

Recent Advances in Fuel‐Driven Molecular Switches and Machines

Light‐Triggered Reversible Open‐Close Motion of a Chiral Molecular Plier to Modulate Guest Binding

Chiral Expression and Morphology Control in Polymer Dispersion Systems

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