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. Author manuscript; available in PMC: 2011 Aug 1.
Published in final edited form as: J Am Chem Soc. 2010 Aug 4;132(30):10365–10373. doi: 10.1021/ja1014184

Figure 4.

Figure 4

(a) An illustration of the polymer chain conformation typically found which is compactly coiled when a small doping acid such as HCl is used (left); the chain becomes more expanded when doped with a bulky doping acid such as CSA and processed in certain solvents (right).38 (b) The dopant anions likely reside between the tetraaniline molecular chains; therefore, the packing distance will be affected by the size of the anions. (c) Tetraaniline molecular chains do not pack well when a bulky doping acid such as CSA is used as the tetramers are prevented from arranging themselves into extended structures; and (d) X-ray diffraction patterns of nanowires (top), nanoribbons (second), rectangular nanoplates (third), nanoflowers (fourth), and agglomerated nanofibers (bottom).