Title

A Superfluorescent Fluorenyl Probe With Efficient Two-Photon Absorption

Abstract

The linear photophysical, excited state absorption (ESA), superfluorescence, and two-photon absorption (2PA) properties of 4,4′-(1E,1′E)-2,2′-(7,7′(1E,1′E)2,2′(4, 4′-sulfonylbis(4,1-phenylene))bis(ethane-2,1-diyl)bis(9, 9-didecy-9H-fluorene7,2-diyl))bis(ethane-2,1-diyl)bis(N,N-diphenylaniline) (1) were investigated in organic and aqueous media with respect to its potential application in biological imaging. The analysis of linear photophysical properties revealed a rather complex nature of the main one-photon absorption band, strong solvatochromic effects in the steady-state fluorescence spectra, single-exponential fluorescence decay, and high fluorescence quantum yields in organic solvents (≈1.0). The ESA spectra of 1 suggested potential for light amplification in nonpolar media while efficient superfluorescence in cyclohexane was demonstrated. The degenerate 2PA spectra of 1 were obtained over a broad spectral range (640-900 nm), using a standard two-photon induced fluorescence method under 1 kHz femtosecond excitation. Two well defined 2PA bands with maximum 2PA cross sections up to 1700 GM in the higher energy, short wavelength band and ≈1200 GM in the lower energy, long wavelength band of 1 were shown. The potential use of 1 in bioimaging was demonstrated via one- and two-photon in vitro fluorescence imaging of HCT 116 cells. © 2011 the Societies Owner.

Publication Date

3-14-2011

Publication Title

Physical Chemistry Chemical Physics

Volume

13

Issue

10

Number of Pages

4303-4310

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1039/c0cp01511c

Socpus ID

79951865430 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/79951865430

This document is currently not available here.

Share

COinS