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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/11878

Title: Broadening the absorption of conjugated polymers by "click" functionalization with phthalocyanines
Authors: CAMPO, Bert
Ganivet, Carolina R.
Ballesteros, Beatriz
Gilot, Jan
Wienk, Martijn M.
LUTSEN, Laurence
CLEIJ, Thomas
de la Torre, Gema
Janssen, Rene A. J.
Torres, Tomas
Issue Date: 2011
Citation: DALTON TRANSACTIONS, 40(15). p. 3979-3988
Abstract: Conjugated copolymer derivatives of poly[2-methoxy-5-(3', 7'-dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO-PPV) and poly(3-hexylthiophene) (P3HT) containing 10% of alkyne functionalities in the side chains have been prepared using the sulfinyl precursor route and the Rieke method, respectively. With the aim of expanding the absorption range of these conjugated polymers for their use in bulk heterojunction (BHJ) polymer: fullerene solar cells, appropriate phthalocyanine (Pc) molecules have been covalently bound through a post-polymerization "click chemistry" reaction between the alkyne functionalities in the side chains of the copolymers and a Pc functionalized with an azide moiety. The resulting poly(p-phenylenevinylene)-Pc (PPV-Pc) material holds a 9 mol% content of Pcs, while the polythiophene-Pc material (PT-Pc) contains a 8 mol% of Pc-functionalization in the side chains. As expected, the presence of the Pc contributes to the extension of the absorption up to 700 nm. BHJ solar cells have been prepared using PPV-Pc and PT-Pc materials in combination with PCBM. Although the Pc absorption contributes to the generation of photocurrent, the overall power conversion efficiencies (PCE) obtained from these cells are lower than those obtained with BHJ P3HT: PCBM (1 : 1) and MDMO-PPV: PCBM (1 : 4) solar cells. A plausible explanation could be the moderate solubility of the PPV-Pc and PT-Pc materials that limits the processing into thin films.
Notes: [Campo, Bert J.; Duchateau, Jan; Oosterbaan, Wibren D.; Vanderzande, Dirk] Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium. [Ganivet, Carolina R.; Ballesteros, Beatriz; de la Torre, Gema; Torres, Tomas] Univ Autonoma Madrid, Dept Quim Organ, E-28049 Madrid, Spain. [Gilot, Jan; Wienk, Martijn M.; Janssen, Rene A. J.] Eindhoven Univ Technol, NL-5600 MB Eindhoven, Netherlands. [Lutsen, Laurence; Cleij, Thomas J.] IMEC, Div IMOMEC, B-3590 Diepenbeek, Belgium. [Torres, Tomas] Univ Autonoma Madrid, Fac Ciencias, IMDEA Nanociencia, E-28049 Madrid, Spain. r.a.j.jannssen@tue.nl; dirk.vanderzande@uhasselt.be; tomas.torres@uam.es
URI: http://hdl.handle.net/1942/11878
DOI: 10.1039/c0dt01348j
ISI #: 000288961100026
ISSN: 1477-9226
Category: A1
Type: Journal Contribution
Validation: ecoom, 2012
Appears in Collections: Research publications

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