How do rotaxanes work?
Rotaxanes are mechanically interlocked molecules and contain one or more macrocycles threaded through a linear guest molecule. The macrocycles are trapped along the linear unit by the conjugation of stoppers that are larger than the macrocycle.
What is the basic difference between catenane and rotaxane?
[n]Rotaxanes (Figure1A) are composed of a central dumbbell-shaped component encircled by nÀ1 trapped rings, while [n]catenanes (Figure 1B) contain n interlocked macrocycles. The prefix [n] indicates the number of me- chanically interlocked components, regardless of their identities.
What is switch in chemistry?
A molecular switch is a molecule that can be reversibly shifted between two or more stable states. The molecules may be shifted between the states in response to environmental stimuli, such as changes in pH, light, temperature, an electric current, microenvironment, or in the presence of ions and other ligands.
What is molecular machines in chemistry?
Definition. Molecular motors, also called molecular machines, are either natural or synthetic molecules that convert chemical energy into mechanical forces and motion. An example of a biological motor is the protein kinesin, which uses the hydrolysis of adenosine triphosphate to move along microtubule filaments.
How Catenanes are formed?
Formation of catenane (19) (Figure 8) involves a self-assembly process driven entirely by the formation of two different types of coordinate bond (i.e., metal-mediated, multiple-interaction self-assembly).
How is a rotaxane made?
(a) A rotaxane is formed from an open ring (R1) with a flexible hinge and a dumbbell-shaped DNA origami structure (D1).
What is a [2]rotaxane?
Therefore, the a rotaxane consisting of a single dumbbell-shaped axial molecule with a single macrocycle around its shaft is called a [2]rotaxane, and two cyanostar molecules around the central phosphate group of dialkylphosphate is a [3]rotaxane.
What is the structure of a rotaxane macrocycle?
Structure of a rotaxane that has a cyclobis (paraquat- p -phenylene) macrocycle. A rotaxane is a mechanically interlocked molecular architecture consisting of a “dumbbell shaped molecule” which is threaded through a ” macrocycle ” (see graphical representation).
What is accepted nomenclature for rotaxanes?
Accepted nomenclature is to designate the number of components of the rotaxane in brackets as a prefix.