Accepted Manuscript Organic light emitting diodes (OLED) based on helical structures containing 7- membered fused rings Paweł Szlachcic, Krzysztof S. Danel, Marlena Gryl, Katarzyna Stadnicka, Zoryana Usatenko, Natalia Nosidlak, Gabriela Lewińska, Jerzy Sanetra, Wojciech Kuźnik PII: S0143-7208(14)00418-5 DOI: 10.1016/j.dyepig.2014.10.021 Reference: DYPI 4572 To appear in: Dyes and Pigments Received Date: 3 August 2014 Revised Date: 25 October 2014 Accepted Date: 28 October 2014 Please cite this article as: Szlachcic P, Danel KS, Gryl M, Stadnicka K, Usatenko Z, Nosidlak N, Lewińska G, Sanetra J, Kuźnik W, Organic light emitting diodes (OLED) based on helical structures containing 7-membered fused rings, Dyes and Pigments (2014), doi: 10.1016/j.dyepig.2014.10.021. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.