Physical Properties of Cyanine–7,7,8,8,8-Tetracyanoquinodimethane Charge Transfer Complexes

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概要

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• A novel intramolecular charge transfer complex—cyanine–7,7,8,8,8-tetracyanoquinodimethane (TCNQ) dye was formed by grafting. The cyanine–TCNQ complex was characterized by UV–vis spectroscopy, fluorescence emission spectroscopy, and magnetic techniques. The optical properties of the cyanine–TCNQ dye, which forms an intramolecular charge transfer complex, are significantly different from cyanine–I with the same basic structure. A $g$ factor of 2.0029 was determined. The magnetic susceptibility of intramolecular complexes with linkers containing three or five carbon atoms, E03–TCNQ and E05–TCNQ, increase rapidly as temperature decreases below 70 K. E03–TCNQ and E05–TCNQ are paramagnetic and plots of $1/(\chi_{\text{M}}-\chi_{\text{TIP}})$ versus $T$ show that the Curie–Weiss temperatures $\theta$ are $8\times 10^{-5}$ K and 0.398 K for E03–TCNQ and E05–TCNQ, respectively.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2005-10-15

著者

• Liao Wen-yih

  Department Of Materials Science And Engineering National Tsing Hua University

• Hu Andrew

  Department And Institute Of Biology And Anatomy National Defense Medical Center Taipei Taiwan Roc

• Lee Sanboh

  Department Of Materials Science And Engineering National Tsing Hua University

• Hu Andrew

  Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300, Taiwan

• Liao Wen-Yih

  Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300, Taiwan

• Lee Ming-Chia

  Opto-Electronic and Systems Laboratories, ITRI, Hsinchu 310, Taiwan

• Lee Sanboh

  Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300, Taiwan

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