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Dimer cyanine dye in use for DVD-R at high speed, and synthesis method

A cyanine dye, high-power technology, applied in the field of trimethyl tetracyanine dye double body compound and its synthesis, to achieve the effects of convenient purification, large extinction coefficient and high yield

Inactive Publication Date: 2006-06-14
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition to absorbing wavelengths, another problem encountered in DVD-R discs is the recording speed

Method used

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  • Dimer cyanine dye in use for DVD-R at high speed, and synthesis method
  • Dimer cyanine dye in use for DVD-R at high speed, and synthesis method
  • Dimer cyanine dye in use for DVD-R at high speed, and synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Synthesis of compound IV-1:

[0032]

[0033] In a 500ml three-necked flask, add 62.7g 1,1,2-trimethyl-1H-benzo[e]indole, 24.3g 1,5-diiodopentane and 250ml n-butanol, and heat to reflux under stirring 24 hours. After the reaction, the reaction mixture was cooled to room temperature, filtered, the solid was washed with water and ethanol, and dried to obtain 48.4 g of white solid with a yield of 87%.

Embodiment 2

[0035] Synthesis of compound IV-2:

[0036]

[0037] Using 2,3,3-trimethylbenzo[g]indole and 1,6-diiodohexane, react according to the method of Example 1 to obtain compound IV-2.

Embodiment 3

[0039] Synthesis of Compound IV-3:

[0040]

[0041] Using 2,3,3-trimethyl-3H-indole and 1,4-diiodobutane, react according to the method of Example 1 to obtain compound IV-3.

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PUM

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Abstract

A trimethenyl cream dyestuff binary compound used for high power speed DVD-R light disc and its preparing method are disclosed by the present invention. the solubility of abovesaid binary compound in organic solvent is excellent and mole extinction coefficient is big so it can raise writing in speed of light disc when it is used as recording media of DVD-R light disc.

Description

technical field [0001] The invention relates to a cyanine dye that can be used for DVD-R discs and a synthesis method thereof, in particular to a trimethylcyanine dye binary compound used for high-speed DVD-R discs and a synthesis method thereof. Background technique [0002] As an important organic dye, cyanine dyes have been widely used in fields such as textile, photosensitive science, laser, fluorescent probe and optical disc recording. The first cyanine dye was first synthesized by Greville Williams in 1856 (K. Venkataraman, The Chemistry of Synthetic Dyes, Vol. II, P1143-1186), and was initially used as a textile dye. In 1875, Vogel discovered that cyanine dyes had special photosensitive properties, and thus began to be used in photosensitive materials. Later, Law et al first proposed to apply cyanine dyes in optical discs as recording media (K.V.Law, P.S.Vincett, and G.E.Johnson, Appl.Phys.Lett., 1981, 39, 718). Since the n value of the cyanine dye is relatively lar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D403/06C07D403/12C09B23/06C09B23/08C09B23/16C09B23/01
CPCC09B23/06C09B23/0008G11B7/247
Inventor 苏建华孟凡顺田禾李翠王海龙陈孔常
Owner EAST CHINA UNIV OF SCI & TECH
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