J. Lee,† A.-R. Han,† J. Hong, J. H. Seo, J. H. Oh,* C. Yang,* "Inversion of Dominant Polarity in Ambipolar Polydiketopyrrolopyrrole with Thermally Removable Groups",  Adv. Funct. Mater. 2012, 22, 4128-4138. [† contributed equally]

[Highlighted as a Back Cover article]

[Press released:  MBC News, Kyunghyang, Joonang Ilbo, Donga Science, etc.]

A narrow bandgap polymeric semiconductor, BOC-PTDPP, composed of an alkyl substituted diketopyrrolopyrrole (DPP) and tert-butoxycarbonyl (t-BOC)-protected DPP, is synthesized with a view toward forming hydrogen-bonded networks after the thermal cleavage of t-BOC groups. On page 4128 Joon Hak Oh, Changduk Yang, and co-workers report that the dominant polarity in ambipolar organic transistors based on BOC-PTDPP changes from positive to negative after the thermal cleavage of t-BOC groups.

* Full paper about it → http://onlinelibrary.wiley.com/doi/10.1002/adfm.201200940/abstract