Synthesis of polypyrrole-coated core/shell nanoparticles

Chimia

Volumn 64, Issue 1-2, 2010, Pages 49-55

  Mühlebach, Andreas ^a   Hafner, Andreas ^a   Rime, François ^a   Mpoukouvalas, Konstantinos ^b   Sun, Ling ^b   Wang, Jianjun ^b   Wegner, Gerhard ^b   Beierlein, Tilman ^c  

^a CIBA GEIGY LTD   (Switzerland)

^b MAX PLANCK INSTITUTE FOR POLYMER RESEARCH   (Germany)

^c CSEM   (Switzerland)

Author keywords

Conductive polymers; Core shell nanoparticles; Organic electronics; Polypyrrole; Spherical polyelectrolyte brush

Indexed keywords

EID: 77949411900     PISSN: 00094293     EISSN: None     Source Type: Journal    
DOI: 10.2533/chimia.2010.49     Document Type: Article

References (13)

1. Bolto and Weiss and co-workers reported highconductivity (up to 1 S/cm) in iodine-doped oxidized polypyrrole already in 1963 (!): B. A. Bolto, D. E. Weiss, Aust. J. Chem. 1963, 16, 1076.
2. W. Wernet, Syn. Lett. 1991, 41-43, 843. He reported film conductivities up to 17 S/cm!
3. a) A. Yassar, J. Roncali, F. Garnier, Polym. Commun. 1987, 28, 103;
4. b) S. P. Armes, S. Gottesfeld, J. G. Beery, F. Garzon, S. F. Agnew, Polymer 1991, 32, 2325;
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6. d) M. A. Khan, S. P. Armes, Adv. Mater. 2000, 12, 671;
7. e) F. M. Huijs, F. F. Vercauteren, B. de Ruiter, D. Kalicharan, G. Hadziioannou, Synthetic Metals 1999, 102, 1151.
8. J. Wang, L. Sun, K. Mpoukouvalas, K. Lienkamp, I. Lieberwirth, B. Fassbender, E. Bonaccurso, G. Brunklaus, A. Muehlebach, T. Beierlein, R. Tilch, H. J. Butt, G. Wegner, Adv. Mater. 2009, 21, 1137.
9. J. Wang, L. Sun, K. Mpoukouvalas, B. Fassbender, E. Bonaccurso, G. Brunklaus, A. Muehlebach, T. Beierlein, R. Tilch, H.-J. Butt, G. Wegner, Macromol. Chem. Phys 2009, 210, 1504.
10. S. Sajjadi, J. Polym. Sci., Polym. Chem. Ed. 2001, 39, 3940.
11. At the beginning of the project, we synthesized the anionic shell by copolymerizing 4-vinylbenzene sulfonate ethylester with other co-monomers and a crosslinker, followed by subsequent hydrolysis of the ester with aqueous sodium hydroxide, see Ref. [4]. Since the ethylester of p-styrene sulfonate is not commercially available and it's synthesis via the silver sulfonate salt very expensive, we developed our own synthesis (two steps via the acid chloride). In this way, we could not only isolate the ethyl ester but also the propyl-, isopropyl-, butyl- and hexyl-esters in excellent yields. However, later on, we discovered by comparing the sulfur content from elemental analysis of the freeze-dried powders with the calculated values, that most of the poly(sodium-p-styrene sulfonate) (PSS) copolymer in the shell was lost upon hydrolysis.
12. F. Rime, A. Mühlebach, unpublished results.
13. D. Braun, Synth. Met. 1998, 92, 107.