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Tetraphenylethylene‐Interweaving Conjugated Macrocycle Polymer Materials as Two‐Photon Fluorescence Sensors for Metal Ions and Organic Molecules

Li, Xi ; Li, Zheng ; Yang, Ying‐Wei

Advanced materials (Weinheim), 2018-05, Vol.30 (20), p.e1800177-n/a [Periódico revisado por pares]

Germany: Wiley Subscription Services, Inc

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  • Título:
    Tetraphenylethylene‐Interweaving Conjugated Macrocycle Polymer Materials as Two‐Photon Fluorescence Sensors for Metal Ions and Organic Molecules
  • Autor: Li, Xi ; Li, Zheng ; Yang, Ying‐Wei
  • Assuntos: Aromatic compounds ; Carcinogens ; conjugated polymers ; Coupling (molecular) ; Fluorescence ; Molecular chains ; Organic chemistry ; Organic compounds ; pillararenes ; Polymers ; sensing ; supramolecular chemistry ; two‐photon fluorescence
  • É parte de: Advanced materials (Weinheim), 2018-05, Vol.30 (20), p.e1800177-n/a
  • Descrição: A luminescent conjugated macrocycle polymer (CMP) with strong two‐photon fluorescence property, namely, P[5]‐TPE‐CMP, is constructed from ditriflate‐functionalized pillar[5]arene and a 1,1,2,2‐tetrakis(4‐ethynylphenyl)ethylene (TPE) linker through a Sonogashira–Hagihara cross‐coupling reaction. Significantly, in sharp contrast with the corresponding conjugated microporous polymer without synthetic macrocycles, P[5]‐TPE‐CMP shows an outstanding stability against photobleaching and exhibits highly selective cation sensing capability toward Fe3+ at different excitation wavelengths (both UV and red–near‐infrared regions). Meanwhile, its fluorescence could also be sufficiently quenched by 4‐amino azobenzene, a frequently used organic dye that is certified to be carcinogenic, as compared with a group of common organic compounds. This work paves a new way for enhancing the properties of porous organic polymers through the introduction of supramolecular macrocycles like macrocyclic arenes. Conjugated macrocycle polymers are first constructed from ditriflate‐functionalized pillararene and a 1,1,2,2‐tetrakis(4‐ethynylphenyl)ethylene linker through a Sonogashira–Hagihara cross‐coupling reaction. They show excellent two‐photon fluorescence (TPF) and serve as a highly efficient TPF sensor for metal ions and organic molecules.
  • Editor: Germany: Wiley Subscription Services, Inc
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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