The synthesis of four new TTF derivatives bearing phthalimides and fluorinated alkyl moieties as potential ambipolar semiconductors is described. The presence of such electron-withdrawing groups permits the stabilization of the energy of HOMO and LUMO orbitals. Preparation of solution-processed single crystal organic field-effect transistors (OFETs) has resulted in hole mobilities of up to 0.33 cm2/Vs for compound 1. On the other hand, electrical time of flight (EToF) measurements on single crystals of compound 3 demonstrated ambipolar transport, reaching very high mobility values around 2.0 cm2/Vs for both types of charges.
COBISS.SI-ID: 1618683
We developed a novel experimental method for the study of flaccid lipid membranes. The method is based on a microfluidic diffusion chamber which allows for a rapid and controlled exchange of chemical environment around biological samples solely by means of diffusion in the absence of hydrodynamic flow. We demonstrated a controlled solution exchange around membrane nanotubes pulled out of giant lipid vesicles by optical tweezers.
COBISS.SI-ID: 28925145
We investigate the electrostatics of a partially formed, charged spherical shell in a salt solution. We solve the problem numerically at the Poisson-Boltzmann level and analytically in the Debye-Hückel regime. From the results on energetics of partially formed shells we examine the stability of tethered (crystalline) and fluid shells toward rupture. We delineate different regimes of stability, where, for fluid shells, we also include the effects of bending elasticity of the shells. Our analysis shows how charging of the shell induces its instability toward rupture but also provides insight regarding growth of charged shells. The results are relevant for assessing intermediate states that emerge during the growth of virus capsids.
COBISS.SI-ID: 2325860