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Updated: Feb 14, 2026

Determination of Carbonyl Functional Groups in Bio-oils by Potentiometric Titration: The Faix Method
Published on: February 7, 2017
Carbonyl-Functionalized Cyclazines as Colorants and Air-Stable n-Type Semiconductors
Artem Skabeev1, Ute Zschieschang2, Yulian Zagranyarski1
1Max Planck Institute for Polymer Research , Ackermannweg 10, 55128 Mainz, Germany.
Abstract:
A series of π-extended cycl[3,3,2]azines (3) bearing additional carbonyl groups were synthesized via aldol condensations. Two strong electron acceptor molecules (4 and 5), with low-lying LUMO energy levels of -3.99 and -3.95 eV, respectively, were obtained. Organic thin-film transistors (TFTs) based on the cyanated cyclazine derivatives 5 were fabricated by vapor deposition, exhibiting extraordinarily stable n-type semiconductor character under ambient condition with the highest electron mobility of 0.06 cm2 V-1 s-1 consistently for more than 30 months.
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