Title

Photochromic Polymer Composites For Two-Photon 3D Optical Data Storage

Abstract

In this paper we demonstrate 3D two-photon recording and two-photon readout in photochromic polymer composites containing a mixture of 1,2-bis(2- methylbenzo[b]thiophen-3-yl)hexafluorocyclopentene (diarylethene 1) and fluorene derivatives 2,2′-(9,9-didecyl-9H-fluorene-2,7-diyl)bis(ethene-2,1-diyl) bis(4,1-phenylene)) dibenzo[d]thiazole (2) or poly(9,9-didecy1-2,7- dipheylaminofluorene) (3). The recording mechanism in this system is based on two-photon excitation of the closed form of diarylethene 1 at 800 nm. The readout mechanism is based on the modulation of the emission intensity of fluorene derivatives 2 or 3 by the closed form of diarylethene 1 through Resonance Energy Transfer (RET). Foster distances (R 0) and critical concentrations (A 0) were calculated from the spectral overlap of the donor's emission (fluorene derivatives) and the acceptor's absorption (closed form of diarylethene 1) in solution and in polymer films of PMMA-co-VBP. This system was demonstrated to be suitable for recording data by two-photon excitation in thick storage media. The RET-based readout method proved to be essentially nondestructive (exhibiting a loss of the initial fluorescence emission less than 20% of the initial emission after 10 000 readout cycles), providing a solution to a long-standing challenge in photochromic optical data storage. © 2007 American Chemical Society.

Publication Date

10-16-2007

Publication Title

Chemistry of Materials

Volume

19

Issue

21

Number of Pages

5165-5173

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/cm071336b

Socpus ID

35548946268 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/35548946268

This document is currently not available here.

Share

COinS