PH-responsive flocculation and dispersion behavior of Janus particles in water

Polymer Journal

Volumn 44, Issue 2, 2012, Pages 181-188

  Ito, Masanori ^a   Enomoto, Ryusuke ^a   Osawa, Kazuki ^a   Daiko, Yusuke ^a   Yazawa, Tetsuo ^a   Fujii, Syuji ^b   Yokoyama, Yuichi ^b   Miyanari, Yuki ^b   Nakamura, Yoshinobu ^b   Nakao, Aiko ^c   Iwasaki, Yasuhiko ^d   Yusa, Shin Ichi ^a  

^a UNIVERSITY OF HYOGO   (Japan)

^b OSAKA INSTITUTE OF TECHNOLOGY   (Japan)

^c Japan Science and Technology Agency   (Japan)

^d KANSAI UNIVERSITY   (Japan)

Author keywords

controlled radical polymerization; graft; Janus particles; pH responsive polymer

Indexed keywords

CONTROLLED RADICAL POLYMERIZATION; DISPERSION BEHAVIOR; GOLD SURFACES; JANUS PARTICLES; OPTICAL MICROSCOPES; PH-RESPONSIVE; PH-RESPONSIVE POLYMER; REVERSIBLE ADDITION-FRAGMENTATION CHAIN TRANSFER; SOLUTION PH;

ATOM TRANSFER RADICAL POLYMERIZATION; DISPERSIONS; FLUORESCENCE MICROSCOPY; FREE RADICAL POLYMERIZATION; GOLD COATINGS; GRAFTING (CHEMICAL); GRAFTS; POLYMERS; SILICON COMPOUNDS; X RAY PHOTOELECTRON SPECTROSCOPY;

FLOCCULATION;

EID: 84856924645     PISSN: 00323896     EISSN: 13490540     Source Type: Journal    
DOI: 10.1038/pj.2011.94     Document Type: Article

References (30)

1. Paunov, V. N. &Cayre, O. J. Supraparticles and 'Janus' particles fabricated by replication of particle monolayers at liquid surfaces using a gel trapping technique. Adv. Mater. 16, 788-791 (2004).
2. Saito, N., Kagari, Y. &Okubo, M. Effect of colloidal stabilizer on the shape of polystyrene/poly(methyl methacrylate) composite particles prepared in aqueous medium by the solvent evaporation method. Langmuir 22, 9397-9402 (2006). (Pubitemid 44818536)
3. Higuchi, T., Tajima, A., Yabu, H. &Shimomura, M. Spontaneous formation of polymer nanoparticles with inner micro-phase separation structures. Soft Matter 4, 1302-1305 (2008). (Pubitemid 351693284)
4. Casagrande, C. &Veyssié , M. Janus beads-realization and 1st observation of interfacial properties. C. R. Acad. Sci. Ser. II 306, 1423-1425 (1998).
5. Yoshida, M. &Lahann, J. Smart nanomaterials. ACS Nano 2, 1101-1107 (2008).
6. Glotzer, S. C. &Solomon, M. J. Anisotropy of building blocks and their assembly into complex structures. Nat. Mater. 6, 557-562 (2007). (Pubitemid 47197675)
7. Perro, A., Reculusa, S., Ravaine, S., Bourgeat-Lami, E. &Duguet, E. Design and synthesis of Janus micro-and nanoparticles. J. Mater. Chem. 15, 3745-3760 (2005). (Pubitemid 41417059)
8. Fujimoto, K., Nakahama, K., Shidara, M. &Kawaguchi, H. Preparation of unsymmetrical microspheres at the interfaces. Langmuir 15, 4630-4635 (1999).
9. Walther, A. &Müller, A. H. E. Janus particles. Soft Matter 4, 663-668 (2008). (Pubitemid 351434073)
10. Hong, L., Cacciuto, A., Luijten, E. &Granick, S. Clusters of charged janus spheres. Nano Lett. 6, 2510-2514 (2006). (Pubitemid 46076941)
11. Hong, L., Cacciuto, A., Luijten, E. &Granick, S. Clusters of amphiphilic colloidal spheres. Langmuir 24, 621-625 (2008). (Pubitemid 351270919)
12. Lattuada, M. &Hatton, T. A. Preparation and controlled self-Assembly of Janus magnetic nanoparticles. J. Am. Chem. Soc. 129, 12878-12889 (2007). (Pubitemid 350004500)
13. Takahara, Y. K., Ikeda, S., Ishino, S., Tachi, K., Ikeue, K., Sakata, T., Hasegawa, T., Mori, H., Matsumura, M. &Ohtani, B. Asymmetrically modified silica particles: A simple particulate surfactant for stabilization of oil droplets in water. J. Am. Chem. Soc. 127, 6271-6275 (2005). (Pubitemid 40637194)
14. Nisisako, T., Torii, T., Takahashi, T. &Takizawa, Y. Synthesis of monodisperse bicolored Janus particles with electrical anisotropy using a microfluidic co-flow system. Adv. Mater. 18, 1152-1156 (2006).
15. Suci, P. A., Kang, S., Young, M. &Douglas, T. A streptavidin-protein cage Janus particle for polarized targeting and modular functionalization. J. Am. Chem. Soc. 131, 9164-9165 (2009).
16. Tanaka, T., Okayama, M., Kitayama, Y., Kagawa, Y. &Okubo, M. Preparation of 'mushroom-like' Janus particles by site-selective surface-initiated atom transfer radical polymerization in aqueous dispersed systems. Langmuir 26, 7843-7847 (2010).
17. Ye, S. &Carroll, R. L. Design and fabrication of bimetallic colloidal 'Janus' particles. ACS Appl. Mater. Interfaces 2, 616-620 (2010).
18. Feng, X., Taton, D., Ibarboure, E., Chaikof, E. L. &Gnanou, Y. Janus-type dendrimerlike poly(ethylene oxide)s. J. Am. Chem. Soc. 130, 11662-11676 (2008).
19. Love, J. C., Gates, B. D., Wolfe, D. B., Paul, K. E. &Whitesides, G. M. Fabrication and wetting properties of metallic half-shells with submicron diameters. Nano Lett. 2, 891-894 (2002). (Pubitemid 135706455)
20. Kato, M., Kamigaito, M., Sawamoto, M. &Higashimura, T. Polymerization of methyl methacrylate with the carbon tetrachloride/dichlorotris- (triphenylphosphine)ruthenium( II)/methylaluminum bis(2,6-di-tert- butylphenoxide) initiating system: Possibility of living radical polymerization. Macromolecules 28, 1721-1723 (1995).
21. Chiefari, J., Chong, Y. K., Ercole, F., Krstina, J., Jeffery, J., Le, T. P. T., Mayadunne, R. T. A., Meijs, G. F., Moad, C. L., Moad, G., Rizzardo, E. &Thang, S. H. Living free-radical polymerization by reversible addition-fragmentation chain transfer: The RAFT process. Macromolecules 31, 5559-5562 (1998). (Pubitemid 128569563)
22. Zelikin, A. N., Such, G. K., Postma, A. &Caruso, F. Poly(vinylpyrrolidone) for bioconjugation and surface ligand immobilization. Biomacromolecules 8, 2950-2953 (2007). (Pubitemid 47516950)
23. Qiu, X.-P. &Winnik, F. M. Facile and efficient one-pot transformation of RAFT polymer end groups via a mild aminolysis/michael addition sequence. Macromol. Rapid Commun. 27, 1648-1653 (2006). (Pubitemid 44580549)
24. Shibaev, V. P., Platé , N. A. &Freidzon, Y. S. Thermotropic liquid crystalline polymers. I. Cholesterol-containing polymers and copolymers. J. Polym. Sci. Polym. Chem. Ed. 17, 1655-1670 (1979). (Pubitemid 9452781)
25. Mitsukami, Y., Donovan, M. S., Lowe, A. B. &McCormick, C. L. Water-soluble polymers. 81. direct synthesis of hydrophilic styrenic-based homopolymers and block copolymers in aqueous solution via RAFT. Macromolecules 34, 2248-2256 (2001). (Pubitemid 34216797)
26. Takei, H. &Shimizu, N. Gradient sensitive microscopic probes prepared by gold evaporation and chemisorption on latex spheres. Langmuir 13, 1865-1868 (1997).
27. Nakayama, M. &Okano, T. Polymer terminal group effects on properties of thermoresponsive polymeric micelles with controlled outer-shell chain lengths. Biomacromolecules 6, 2320-2327 (2005). (Pubitemid 41052232)
28. Butt, H. J-., Graf, K. &Kappl, M. Physics and Chemistry of Interfaces (Wiley-VCH: Veriag GmbH &Co, KgaA, Weinheim, Germany, 2006).
29. Kanoh, N., Kyo, M., Inamori, K., Ando, A., Asami, A., Nakao, A. &Osada, H. SPR imaging of photo-cross-linked small-molecule arrays on gold. Anal. Chem. 78, 2226-2230 (2006).
30. Ohno, K., Koh, K., Tsujii, Y. &Fukuda, T. Synthesis of gold nanoparticles coated with well-defined, high-density Polymer brushes by surface-initiated living radical polymerization. Macromolecules 35, 8989-8993 (2002). (Pubitemid 35421922)