Probing the Microenvironments in a Polymer-Wrapped Core−Shell Nanoassembly Using Pyrene Chromophores

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dc.contributor.authorWu, Tuoqi
dc.contributor.authorOake, Jessy
dc.contributor.authorLiu, Zhongde
dc.contributor.authorBohne, Cornelia
dc.contributor.authorBranda, Neil R.
dc.date.accessioned2019-03-30T18:57:59Z
dc.date.available2019-03-30T18:57:59Z
dc.date.copyright2018en_US
dc.date.issued2018
dc.description.abstractThe local environments within an amphiphilic polymer shell wrapped around lanthanide-doped upconverting nanoparticles were probed using steady-state and time-resolved fluorescence spectroscopy techniques. Emission lifetime measurements of pyrene chromophores trapped within the polymer shell reveal that there are at least two environments, where the organic pyrene molecules are encapsulated in hydrophobic environments that have lower polarity than in water. The migration of pyrene chromophores from their initial location to another location was also observed, demonstrating that the polymeric shell provides both hydrophobicity and mobility for entrapped molecules. These results offer insight into what outcomes can be expected when chemical reactions are carried out in these nanoassemblies, especially if they are to be used as nanoreactors for synthesis or delivery vehicles for therapeutics.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis research was supported by the Natural Sciences and Engineering Research Council (NSERC) of Canada, the Canada Research Chairs Program, and Simon Fraser University. This work made use of 4D LABS shared facilities supported by the Canada Foundation for Innovation (CFI), British Columbia Knowledge Development Fund (BCKDF), and Simon Fraser University. Researchers at UVic thank NSERC (RGPIN-121389-2012) for funding and CAMTEC for the use of shared facilities.en_US
dc.identifier.citationWu, T., Oake, J., Liu, Z., Bohne, C. & Branda, N.R. (2018). Probing the Microenvironments in a Polymer- Wrapped Core-Shell Nanoassemble Using Pyrene Chromophores. ACS Omega, 3(7), 7673-7680. http://dx.doi.org/10.1021/acsomega.8b00953en_US
dc.identifier.urihttp://dx.doi.org/10.1021/acsomega.8b00953
dc.identifier.urihttp://hdl.handle.net/1828/10679
dc.language.isoenen_US
dc.publisherACS Omegaen_US
dc.subjectFluorescence
dc.subjectNanoparticles
dc.subjectNanoreactors
dc.subjectNanostructures
dc.subjectPolyoxyalkylenes
dc.subjectCentre for Advanced Materials and Related Technology (CAMTEC)
dc.subject.departmentDepartment of Chemistry
dc.titleProbing the Microenvironments in a Polymer-Wrapped Core−Shell Nanoassembly Using Pyrene Chromophoresen_US
dc.typeArticleen_US

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