A series of phenyl end-capped α-oligothiophenes containing four to seven thiophene subunits (4T–7T) was synthesized utilizing palladium-catalyzed cross-coupling reactions. UV/Vis spectroscopic analysis revealed one broad absorption band that shifts bathochromically with increasing number units. Structured emission spectra are observed Stokes shift ν~4000 cm−1 and quantum yields up 53%. End-capp...

Earlier Monte Carlo studies on a single-helix model of the GTP cap at the end of a microtubule are extended here to a more realistic five-start helix model of the microtubule end. As in the earlier work, phase changes occur at the microtubule end: the end is either capped with GTP and growing slowly or uncapped and shortening rapidly, and these two regimes alternate (at a given tubulin concentr...

We report on the development of an acetylene-filled photonic microcell based assembly process that is contaminant free and requires no helium buffer gas nor gluing procedure. The consists a 7-m-long 30 µm core-diameter inhibited-coupling guiding hollow-core crystal fiber filled with acetylene at pressure in range 80 µbar, sealed by capping its ends fusion-collapsing glass-tube sleeve, mounted F...