Home
Resources
Publications
Infrared Spectroscopic Signatures of Phase Segregation in P3HT-porphyrin Blends

Infrared Spectroscopic Signatures of Phase Segregation in P3HT-porphyrin Blends

Audrey A Eigner, Patrick E Konold, Aaron M Massari

J Phys Chem B. 2009 Nov 5;113(44):14549-54.

PMID: 19817498

Abstract:

Phase segregation of 2,3,7,8,12,13,17,18-octaethyl-21H,23H-porphine ruthenium(II)carbonyl (RuOEP) and regioregular poly(3-hexylthiophene-2,5-diyl) (P3HT) in thin films is investigated with infrared and UV-visible spectroscopies as well as transmission electron microscopy (TEM). The Fourier transform infrared (FTIR) spectrum of the ruthenium-bound CO symmetric stretching mode exhibits significant changes as these films are annealed in solvent vapors. The development of multiple inhomogeneously broadened microenvironments is observed, and UV-visible spectra and TEM support a model of homogeneous porphyrin distribution throughout the P3HT films that gradually becomes more heterogeneous as the P3HT and RuOEP molecules phase segregate. A complete model for the phase segregation process experienced by the embedded RuOEP is proposed to explain the collective experimental observations.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP41636355	2,3,7,8,12,13,17,18-Octaethyl-21H,23H-porphine ruthenium(II) carbonyl		41636-35-5	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: