Related Experiment Video
Updated: Oct 29, 2025

Design and Synthesis of a Reconfigurable DNA Accordion Rack
Published on: August 15, 2018
Using Slippage to Construct a Prototypical Molecular "Lock & Lock" Box
Ting-Hsuan Chiang1, Cheng-Yen Tsou1, Yu-Hsuan Chang1
1Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, Taiwan.
Abstract:
We report a new slippage system based on p-tert-butylbenzyl-terminated imidazolium ions and di(ethylene glycol)-containing macrocycles and their use as linking units for the construction of a prototypical molecular "Lock & Lock" box from a resorcinarene-based cavitand "bowl" and a porphyrin "cover". The multivalent structure with four slippage linkers provided the molecular box with high stability, yet the system dissociated into its two components upon application of suitable external stimuli.
Related Concept Videos
Design Example: Forces in Sluice Gate
Key variables in...
Self-Locking Screw
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
Wedges
Consider using a wedge to lift a heavy slab. Here, the wedge functions by converting the applied force into a much larger force directed almost perpendicular to the initial force. This...
Frictional Forces on Screws
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
Molecular Orbital Theory I

