Water-soluble two-photon fluorophores based on paracyclophane

Han Young Woo, Guillermo C. Bazan

Research output: Contribution to journalArticle

Abstract

We report the synthesis, linear and nonlinear spectroscopy of the paracyclophane-based two-photon absorption (TPA) fluorophores. Two-photon induced fluorescence (TPIF) measurements in water show a substantial decrease in TPA cross section () and fluorescence quantum yield (), relative to toluene. We note that to obtain optimum two-photon action cross sections () in water, one needs to fine tune the intramolecular charge transfer (ICT). Microenvironment modulation using the micellar structure in water increases values similar to those obtained in toluene. The measured values in water are the highest among reported so far, suggesting important guidelines for designing of optimized TPIF molecular-labels.

Original languageEnglish
JournalMolecular Crystals and Liquid Crystals
Volume485
DOIs
Publication statusPublished - 2008 Jul 24
Externally publishedYes

Fingerprint

Fluorophores
Photons
Water
photons
water
Fluorescence
Toluene
fluorescence
toluene
Quantum yield
absorption cross sections
Charge transfer
Labels
charge transfer
Modulation
Spectroscopy
modulation
cross sections
synthesis
spectroscopy

Keywords

  • Bioimaging
  • Paracyclophane
  • TPA molecular label
  • Two-photon absorption

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Water-soluble two-photon fluorophores based on paracyclophane. / Woo, Han Young; Bazan, Guillermo C.

In: Molecular Crystals and Liquid Crystals, Vol. 485, 24.07.2008.

Research output: Contribution to journalArticle

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