Publications by authors named "Meng-Yan Yun"
A Visible-Light-Induced Dynamic Mechanical Bond as a Linkage for Dynamic Materials.
Angew Chem Int Ed Engl
September 2019
Exploring dynamic bonds and their applications in fabricating dynamic materials has received great attention. A photoinduced [2]rotaxane-based dynamic mechanical bond (DMB) features visible-light-triggered dynamic bonding behavior that is essentially distinguished from conventional dynamic chemical bonds. In this DMB, a photoisomerizable ortho-fluoroazobenzene unit is introduced as a steric-controllable stopper, the visible-light-induced dynamic wagging movement of which enables the photoregulated threading of the macrocycle.
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- Linear tetrathiafulvalene (TTF) oligomers were created that can fold into a specific radical cation structure when oxidized, as well as interact with CBPQT to create a folded donor-acceptor pseudorotaxane in a neutral state.
- These oligomers demonstrate the ability to switch between two different folded structures based on the redox states of the TTF units.
- This research highlights the potential for controlling supramolecular structures through oxidation and reduction processes.
Light-triggered photoisomerization of the azobenzene (AB) unit in bistable [2]rotaxanes can cause the shuttling of the macrocycle on the dumbbell, resulting in distinctive dual spectral variation characteristics: (1) the spectral change of the photochromic unit and (2) the variation of the charge-transfer band. By employing the CT bond region as an output signal, non-destructive readout of optical information could be achieved.
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