Preparation and Photophysical Properties of Two-Photon Absorption Materials Containing Quinoline Ring as Electron Acceptors

Abstract:

Two-photon absorption materials containing quinoline ring as electron acceptors: 9-ethyl-3-(2-quinolin)viny-carbazole (4) and 9-ethyl-3,6-bis(2-(quinolin)vinyl)–carbazole (5) have been prepared by the Vilsmeier reaction of formylation and Knoevenagel condensation. Their one-photon properties including linear absorption, fluorescence spectra, fluorescence quantum yields and fluorescence decay behaviors and the two-photon fluorescence excited by 120 fs pulse at 800nm Ti: sapphire laser operating at 1 kHz repetition rate were investigated, and two photon absorption cross-section was measured. It was showed that material 5 containing two quinoline rings as electron acceptors exhibited high two-photon absorption activity and the two-photon absorption cross-section (δTPA) was 364×10–50cm4s/photon, which was about as four times as that of material 4 containing one quinoline ring as electron acceptor (δTPA=81×10–50cm4 s/photon); material 5 possessed longer fluorescence lifetime (τ) of 21.4 ns and larger fluorescence quantum yield (Φ) of 0.81 than those of material 4 (τ=10.03 ns, Φ=0.77). Influence of chemical structure on the two-photon absorption was discussed. Based on the optical properties, sample 5 might be a promising candidate material for the application in super-high-density three-dimensional (3D) two-photon data storage and two-photon 3D nano/micro structure fabrication.

• Periodical: Advanced Materials Research (Volumes 557-559)
• Pages: 755-760
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.557-559.755
• Online since: July 2012
• Authors: Ping Wang, Liang Li, Yi Chi Zhang, Yi Qun Wu, Zhi Min Chen, Chun Ying He
• Keywords: Electron Acceptor, Photophysical Properties, Preparation, Quinoline Ring, Two-Photon Absorption Material

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