Molecular Rotors as Switches

Molecular Rotors as Switches

The use of a functional molecular unit acting as a state variable provides an attractive alternative for the next generations of nanoscale electronics. It may help overcome the limits of conventional MOSFETd due to their potential scalability, low-cost, low variability, and highly integratable characteristics as well as the capability to exploit bottom-up self-assembly processes. This bottom-up...

Artificial molecular rotors.

Molecular switches as photocontrollable "smart" receptors.

This critical review focuses on the development of photochromic compounds as sensors for cations, anions, and biologically important molecules. The review commences with a brief description of photochromism and the strategies to exploit photochromic molecular switches' properties for sensing application. This is followed by a summary of photoswitchable receptors emerged to date and classified a...

Molecular rotors: Synthesis and evaluation as viscosity sensors.

It has been shown that compounds containing the p-N,N,-dialkylaminobenzylidene cyanoacetate motif can serve as fluorescent non-mechanical viscosity sensors. These compounds, referred to as molecular rotors, belong to a class of fluorescent probes that are known to form twisted intramolecular charge-transfer complexes in the excited state. In this study we present the synthesis and spectroscopic...

Dyes with Segmental Mobility: Molecular Rotors

Molecular rotors are fluorescent molecules that are characterized by the ability to form twisted states through the rotation of one segment of the structure with respect to the rest of the molecule. Intramolecular rotation changes the groundstate and excited-state energies, and molecular rotors deexcite from the twisted state either without photon emission or with a different wavelength than fr...