Structure Determination for LMW Fraction

The peak widths of the HMW material is broader than that of the LMW fraction, it reveals a smaller crystallite size compared with the LMW fraction material. The average crystal size was D 25 run and D 8 run for the LMW and the HMW fractions, respectively. 

Following previous structure investigation of the same material, the low-order peaks of aUcyl stacking indicated by (100), (200) and (300) are related to 

Using all angular positions of peaks measured in GOD and GID seans together we evaluated a suitable unit eell of the nanoerystallites within LMW P3HT samples. In contrast to the thin-films investigations by Kline et al. [12, 

13] we observed additional peaks. These peak positions cannot be explained by the assumption of an orthorhombic cell as suggested by Tashiro et al. [29]. Multiples of (100) and the (020) or (002) have already been found by Kline etal. [12]. 

However, the number of structure peaks is still too small to evaluate a unique structure solution. The fitted unit cell can be triclinic or monoclinic. In the present case several unit cells match the experimental data. Of these, the two unit cells with parameters (1) = 16.2 A, = 7.6 A, Cj = 7.1 A, P= 105.5 

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