Efficient Photochromic Transformation of a New Fluorenyl Diarylethene: One- and Two-Photon Absorption Spectroscopy

    Authors

    G. Luchita; M. V. Bondar; S. Yao; I. A. Mikhailov; C. O. Yanez; O. V. Przhonska; A. E. Masunov;K. D. Belfield

    Comments

    Authors: contact us about adding a copy of your work at [email protected]

    Abbreviated Journal Title

    ACS Appl. Mater. Interfaces

    Keywords

    photochromic reaction; photoisomerization; diarylethene; two-photon; absorption; transient absorption spectroscopy; OPTICAL-DATA STORAGE; NONDESTRUCTIVE READOUT; MOLECULAR SWITCHES; LASER; PHOTOLYSIS; DERIVATIVES; DEVICES; LIGHT; CHROMOPHORES; DYNAMICS; FLUOROPHORES; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary

    Abstract

    Efficient reversible phototransformation of a new diarylethene-fluorene derivative, 1,2-bis(5-(9,9-didecyl-7-nitro-9H-fluoren-2-yl)-2-methylthiophen-3-yl)cyclopent-1-ene (1), was demonstrated in organic media under low-intensity laser excitation. Linear photophysical characterization of 1 was performed at room temperature in solvents of different polarity and viscosity. Significantly, close to unity quantum yield for the cyclization reaction of 1 was shown in nonpolar solutions. The lifetimes of the excited states of the open (OF) and closed (CF) forms of 1 were measured by a femtosecond transient absorption technique, and corresponding values of similar to 0.7 and similar to 0.9 ps were shown in dichloromethane (DCM), respectively. Degenerate two-photon absorption (2PA) spectra of the OF and CF of 1 were obtained over a broad spectral range by the open aperture Z-scan method under 1 kHz femtosecond excitation. The values of 2PA cross sections of the OF in DCM (similar to 50-70 GM) were found to increase up to 1 order of magnitude (similar to 600 GM) after cyclization to the CF. The nature of cyclization and cylcoreversion processes were investigated by quantum chemistry with employment of DFT-based methods implemented in the Gaussian'09 program. The potential of 1 for application in optical data storage was shown using poly(methyl methacrylate)-doped films and two-photon fluorescence microscopy readout.

    Journal Title

    Acs Applied Materials & Interfaces

    Volume

    3

    Issue/Number

    9

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    3559

    Last Page

    3567

    WOS Identifier

    WOS:000295236900049

    ISSN

    1944-8244

    Share

    COinS
     

    Accessibility Statement

    This item was created or digitized prior to April 24, 2027, or is a reproduction of legacy media created before that date. It is preserved in its original, unmodified state specifically for research, reference, or historical recordkeeping. In accordance with the ADA Title II Final Rule, the University Libraries provides accessible versions of archival materials upon request. To request an accommodation for this item, please submit an accessibility request form.