Increasingly twisted push–pull oligothiophenes and their planarization in confined space
作者:David Alonso Doval、Stefan Matile
DOI:10.1039/c3ob41706a
日期:——
A series of systematically deplanarized pushâpull oligothiophenes is designed and synthesized to determine the perfect twist for maximal spectroscopic response to their planarization within lipid bilayer membranes. Weak deplanarization naturally gives weak shifts, but strong deplanarization also gives weak shifts because planarization becomes impossible. Intermediate deplanarization turns out to be ideal. The shifts found in response to chromophore planarization are not as dramatic as with lobsters during cooking but sufficient to discriminate solid-ordered and liquid-disordered membranes with the naked eye.
3,4-Ethylenedioxythiophene in planarizable push–pull oligothiophenes
作者:Marta Dal Molin、Stefan Matile
DOI:10.1039/c3ob27471c
日期:——
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 rotationalfreedom with