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3,4-Ethylenedioxythiophene in Planarizable Push-Pull Oligothiophenes

3,4-Ethylenedioxythiophene in Planarizable Push-Pull Oligothiophenes

Marta Dal Molin, Stefan Matile

Org Biomol Chem. 2013 Mar 28;11(12):1952-7.

PMID: 23389656

Abstract:

We report design, synthesis and evaluation of push-pull quaterthiophene amphiphiles containing one 3,4-ethylenedioxythiophene (EDOT) and a single strong twist in the scaffold. Planarizable push-pull oligothiophene amphiphiles have been introduced recently as conceptually innovative fluorescent probes that sense the fluidity and the potential of lipid bilayer membranes. The "hyper-twisted" EDOT probes respond to planarization and restricted rotational freedom with a red shift and changes in vibrational finestructure in the excitation spectrum, respectively. In solution, comparably weak solvatochromism and significant thermochromism are found. Planarization and restricted rotational freedom afford exquisite sensitivity toward nature and fluidity of lipid bilayer membranes, including ratiometric detection of phase transitions. The sensing of membrane potentials is weakened by these unique properties but remains possible.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP126213501	3,4-Ethylenedioxythiophene		126213-50-1	Price

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