title: Photoluminescent toroids formed by temperature-driven self-assembly of rhodamine B end-capped poly(N-isopropylacrylamide).
abstract: In this paper, self-assembled polymeric toroids formed by a temperature-driven process are reported. Rhodamine B (RhB) end-capped poly(N-isopropylacrylamide) (PNIPAAm) demonstrating a lower critical solution temperature (LCST) is prepared. In a two-phase system, the polymer in the aqueous phase could move to the chloroform phase on raising the temperature above its LCST. This temperature-driven process results in the formation of polymeric toroids in the chloroform phase, and the strategy affords a new pathway to toroidal self-assembly of polymers. Moreover, the photoluminescent behavior of the RhB end-capped PNIPAAm species formed by the process is also studied and discussed.
authors.affiliation: #200, Chung-Pei Road, Department of Chemical Engineering and R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan 32023, Taiwan.
authors.forename: Chih-Yuan
authors.initials: CY
authors.lastname: Hsu
authors.forename: Shih-Chieh
authors.initials: SC
authors.lastname: Chang
authors.forename: Keh-Ying
authors.initials: KY
authors.lastname: Hsu
authors.forename: Ying-Ling
authors.initials: YL
authors.lastname: Liu
mesh_terms: D000178:Acrylamides / Q000737:chemistry*; D000180:Acrylic Resins; D002725:Chloroform / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D012235:Rhodamines / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D000178:Acrylamides; D000180:Acrylic Resins; D011108:Polymers; D012235:Rhodamines; D014867:Water; C052970:poly-N-isopropylacrylamide; D002725:Chloroform; C029773:rhodamine B