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Title: Phase behavior of PCBM blends with different conjugated polymers
Authors: Zhao, Jun
BERTHO, Sabine 
Van Assche, Guy
MANCA, Jean 
Yin, Xiaoqing
Shi, Jingdan
CLEIJ, Thomas 
LUTSEN, Laurence 
Van Mele, Bruno
Issue Date: 2011
Source: PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 13(26). p. 12285-12292
Abstract: In this work the phase behavior of [6,6]-phenyl C(61)-butyric acid methyl ester (PCBM) blends with different poly(phenylene vinylene) (PPV) samples is investigated by means of standard and modulated temperature differential scanning calorimetry (DSC and MTDSC) and rapid heat-cool calorimetry (RHC). The PPV conjugated polymers include poly(2-methoxy-5-(3',7'-dimethyloctyloxy)- 1,4-phenylene vinylene) (MDMO-PPV), High T(g)-PPV which is a copolymer, and poly((2-methoxy-5-phenethoxy)-1,4-phenylene vinylene) (MPE-PPV). Comparisons of these PPV: PCBM blends with regioregular poly(3-hexyl thiophene) (P3HT): PCBM blends are made to see the different component miscibilities among different blends. The occurrence of liquid-liquid phase separation in the molten state of MDMO-PPV: PCBM and High T(g)-PPV: PCBM blends is indicated by the coexistence of double glass transitions for blends with a PCBM weight fraction of around 80 wt%. This is in contrast to the P3HT: PCBM blends where no phase separation is observed. Due to its high cooling rate (about 2000 K min(-1)), RHC proves to be a useful tool to investigate the phase separation in PPV: PCBM blends through the glass transition of these crystallizable blends. P3HT is found to have much higher thermal stability than the PPV samples.
Notes: Van Assche, G (reprint author)[Zhao, J; Van Assche, G; Van Mele, B] Vrije Univ Brussel, Dept Mat & Chem, B-1050 Brussels, Belgium [Zhao, J; Yin, XQ; Shi, JD] Univ Sci & Technol, Sch Chem & Biol Engn, Dept Polymer Sci & Engn, Beijing 100083, Peoples R China [Bertho, S; Vandenbergh, J; Manca, J; Vanderzande, D; Cleij, T] Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium [Manca, J; Vanderzande, D; Lutsen, L] IMEC, Div IMOMEC, B-3590 Diepenbeek, Belgium
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ISSN: 1463-9076
e-ISSN: 1463-9084
DOI: 10.1039/c0cp02814b
ISI #: 000291885300020
Category: A1
Type: Journal Contribution
Validations: ecoom 2012
Appears in Collections:Research publications

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