Author/Authors :
Theander، نويسنده , , Stephanie M. and Svensson، نويسنده , , M. and Ruseckas، نويسنده , , A. and Zigmantas، نويسنده , , D. and Sundstrِm، نويسنده , , V. and Andersson، نويسنده , , M.R. and Inganنs، نويسنده , , O.، نويسنده ,
Abstract :
Steady-state and time-resolved photoluminescence (PL) is used to probe different states of order in highly regular poly(3-(2′-methoxy-5′-octylphenyl)thiophene) (POMeOPT). In a good solvent (chloroform) the polymer has a PL yield of 0.33 and in a solvent with low solubility (mixture of chloroform and toluene) a new phase appears with higher PL yield (0.50). The new phase is attributed to micro-crystals formed by the regular part of the polymer which have low solubility in toluene. The crystallites have highly structured and redshifted electronic transitions compared with chains which are dissolved.
