TY - JOUR AU - Karsten B.P. AU - Viani L. AU - Gierschner, Johannes AU - Cornil J. AU - Janssen R.A.J. PY - 2009 DO - 10.1021/jp9050148 UR - http://hdl.handle.net/20.500.12614/295 T2 - Journal of Physical Chemistry A LA - en M2 - 10343 TI - On the origin of small band gaps in alternating thiophene - thienopyrazine oligomers TY - research article VL - 113 ER -