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On-demand acid-gated fluorescence switch-on in photo-generated nanospheres.
Hooker, Jordan P; Feist, Florian; Delafresnaye, Laura; Cavalli, Federica; Barner, Leonie; Barner-Kowollik, Christopher.
Afiliação
  • Hooker JP; Centre for Materials Science, School of Chemistry and Physics, Institute for Future Environments, Queensland University of Technology (QUT), 2 George Street, QLD 4000, Brisbane, Australia. christopher.barnerkowollik@qut.edu.au leonie.barner@qut.edu.au.
Chem Commun (Camb) ; 56(37): 4986-4989, 2020 May 07.
Article em En | MEDLINE | ID: mdl-32297609
ABSTRACT
Herein, we introduce a fast, additive-free, ambient temperature photochemical approach - utilising the novel Diels-Alder cycloaddition of a photo-active ortho-methylbenzaldehyde (oMBA) with a terminal alkyne - for preparing functional acid-sensitive profluorescent nano-/microspheres in one step. Not previously reported, the possibility of applying such a reaction in the context of particle synthesis provides new possibilities for particle design, where multi-step reactivity can be gated into distinct steps. First, a photochemically-gated particle formation step yields a material possessing a reactive, spring-loaded intermediate at every cross-linking point. A second, on-demand step to initiate fluorescence generation subsequently imparts the properties of the chemical transformation to the material itself. The synthesised particles are narrow-disperse with an average diameter ranging from 170-380 nm.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article