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dc.contributor.authorYuyama, Ken-ichien_US
dc.contributor.authorMarcelis, Lionelen_US
dc.contributor.authorSu, Pei-Meien_US
dc.contributor.authorChung, Wen-Shengen_US
dc.contributor.authorMasuhara, Hiroshien_US
dc.date.accessioned2017-04-21T06:56:19Z-
dc.date.available2017-04-21T06:56:19Z-
dc.date.issued2017-01-24en_US
dc.identifier.issn0743-7463en_US
dc.identifier.urihttp://dx.doi.org/10.1021/acs.langmuir.6b03780en_US
dc.identifier.urihttp://hdl.handle.net/11536/133208-
dc.description.abstractLaser trapping in chemistry covers various studies ranging from single molecules, nanoparticles, and quantum dots to crystallization and liquid liquid phase separation of amino acids. In this work, a supramolecular assembly of azobenzene-based biscalix[4]arene is generated in ethyl acetate using laser trapping; its nucleation and growth are elucidated. No trapping behavior was observed when a 1064 nm laser beam was focused inside of the solution; however, interesting assembling phenomena were induced when it was shined at the air/solution interface. A single disk having two layers was first prepared at the focal point of similar to 1 mu m and then expanded to the size of a few tens of micrometers, although no optical force was exerted outside of the focal volume. Upon switching the trapping laser off, needles were generated at the outer layer of the assembly, giving a stable sea urchin-like morphology to the generated assembly. At a 30-50% dilution of the initial solution in ethyl acetate, a mushroom-like morphology was also observed. Laser trapping-induced assembly of azobenzene-based biscalix[4]arene was quite different from the sharp-ellipsoidal aggregates obtained by the spontaneous evaporation of the solution. These trapping phenomena were specifically observed for biscalix[4]arene in the trans conformation of azo-benzene moiety but not for the cis-form, suggesting that the laser trapping of this azobenzene-based biscalix[4]arene is photocontrollable. Dynamics and mechanism of the supramolecular assembling are considered, referring to laser trapping-induced nucleation and liquid-liquid phase separation of amino acids.en_US
dc.language.isoen_USen_US
dc.titlePhotocontrolled Supramolecular Assembling of Azobenzene-Based Biscalix[4]arenes upon Starting and Stopping Laser Trappingen_US
dc.identifier.doi10.1021/acs.langmuir.6b03780en_US
dc.identifier.journalLANGMUIRen_US
dc.citation.volume33en_US
dc.citation.issue3en_US
dc.citation.spage755en_US
dc.citation.epage763en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.department應用化學系分子科學碩博班zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.contributor.departmentInstitute of Molecular scienceen_US
dc.identifier.wosnumberWOS:000392888600011en_US
Appears in Collections:Articles