Multiple Chain Packing and Phase Composition in Regioregular Poly(3-butylthiophene) Films
Artikel i vetenskaplig tidskrift, 2016

On the basis of different film preparation conditions, we address the phase composition and thiophene main-chain and butyl side-chain organization of three regioregular poly(3-butylthiophene) (P3BT) samples prepared by drop-casting. These samples are readily identified by wide-angle X-ray diffraction (WAXD) with the structural P3BT polymorphs commonly referred to as forms I, I?, and II. Here, we show by means of WAXD, solid-state nuclear magnetic resonance (NMR), and Fourier-transform infrared spectroscopy (FTIR) that the P3BT samples identified with these polymeric forms (I, I?, and II) do not contain a single, unique crystalline phase and an amorphous phase, but additionally consist of one (form II) or two (forms I and I?) distinct crystalline phases. Each of the crystalline phases is associated with specific thiophene main-chain packing arrangements and butyl side-chain organizations. We provide a spectroscopic identification for each of the P3BT crystalline phases, enabling a detailed and consistent picture of molecular order and polymer main-chain and side-chain packing. Thus, our results are expected to be valuable in future studies of poly(3-alkylthiophene) (P3AT) thin films, where in particular FTIR studies will permit quick and easy access to both phase composition and identification of multiple thiophene main-chain packing structures.

Författare

Yuan Yuan

Max Planck-institutet

Qingdao University of Science and Technology

Jie Shu

Max Planck-institutet

Soochow University

Krzysztof Kolman

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Teknisk ytkemi

Adam Kiersnowski

Max Planck-institutet

Wrocław University of Science and Technology

Christoph Bubeck

Max Planck-institutet

Jianming Zhang

Max Planck-institutet

Qingdao University of Science and Technology

Michael Ryan Hansen

Max Planck-institutet

Universität Münster

Macromolecules

0024-9297 (ISSN) 1520-5835 (eISSN)

Vol. 49 24 9493-9506

Ämneskategorier

Kemi

DOI

10.1021/acs.macromol.6b01828

Mer information

Senast uppdaterat

2018-03-06