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Near-infrared absorbing material and use thereof

A technology of near-infrared rays and absorbing materials, which is applied to radiation-absorbing coatings, other chemical processes, instruments, etc., and can solve problems such as low solubility and degradation of resin compatibility

Inactive Publication Date: 2008-07-30
TOYO INK SC HOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, substituted phenyldithiocyclopentene nickel complexes are easier to manufacture and have better durability, etc., but they have low solubility in solvents and have the problem of poor compatibility with resins.

Method used

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  • Near-infrared absorbing material and use thereof
  • Near-infrared absorbing material and use thereof
  • Near-infrared absorbing material and use thereof

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0272] [Production Example 1] Synthesis of Compound 1

[0273] [chem 21]

[0274] Compound 1

[0275] Under nitrogen flow, in a four-necked flask, add phenylglyoxal monohydrate (glyoxal) (4.56g, 30mmol), bromoethylbenzene (11.1g, 60mmol), dichloroethane 60ml, and dropwise slowly therein Titanium tetrachloride (8.54 g, 45 mmol) was stirred at room temperature for 3 hours. After the reaction was completed, water was added for extraction, evaporated, and recrystallized from hexane to form the above-mentioned compound 1. The yield was 46%.

manufacture example 2

[0276] [Production Example 2] Synthesis of Compound 2

[0277] [chem 22]

[0278]

[0279] The benzoin derivative compound 1 (3.0 g, 9.4 mmol) synthesized in Production Example 1, phosphorus pentasulfide (12.53 g, 28.2 mmol), and 50 ml of dioxane were added to a 4-neck flask, and refluxed for 2 hours under a nitrogen atmosphere. After the reaction, filter and add NiCl to the filtrate 2 .6H 2 O (1.12 g, 4.7 mmol) aqueous solution was again refluxed for 2 hours. After the reaction was completed, water and methanol were added, stirred for a period of time, and then filtered to recover the above-mentioned compound 2. The yield is 45%.

manufacture example 3

[0280] [Production Example 3] Synthesis of P-1

[0281] [chem 23]

[0282]

[0283] Compound 2 (0.8 g, 1.06 mmol) synthesized in Production Example 2, bisphenol A (0.24 g, 1.06 g) and K were added to a 4-necked flask 2 CO 3 (1.16g, 8.44mmol), DMF40ml, stirred at 80°C for 8 hours under nitrogen atmosphere. After the reaction was completed, it was filtered and evaporated, then dropped into a water / methanol=1 / 2 solution, and a small amount of HCl aqueous solution was added for washing. After filtration, the target object P-1 was recovered. The yield is 50%.

[0284] Figure 1 shows the absorption spectrum of P-1 in chloroform. It can be seen from Figure 1 that P-1 absorbs less visible light and has greater absorption in the near-infrared range.

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PUM

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Abstract

The present invention is a near-infrared absorbing material having a repeating unit represented by general formula (1) or general formula (2) and a near-infrared absorbing agent containing it, and further comprising the near-infrared absorbing material or near-infrared absorbing agent Near-infrared absorbing composition and optical filter. (In the formula, M represents a metal atom, R 1 and R 4 Each independently represents a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or a substituted or unsubstituted alkyl group, R 2 and R 3 Each independently represents a substituted or unsubstituted arylene group, a substituted or unsubstituted heteroarylene group, or a substituted or unsubstituted alkylene group, and R 1 and R 2 , R 3 and R 4 can also combine with each other to form a ring, and Y 1 ~Y 4 Represents a direct bond or a heteroatom, wherein A represents a direct bond or a divalent organic residue. )

Description

technical field [0001] The present invention relates to a novel dithiole-based near-infrared absorbing material, a near-infrared absorbing agent comprising the near-infrared absorbing material, and a near-infrared absorbing agent comprising the near-infrared absorbing material or near-infrared absorbing agent Composition, near-infrared absorbing film, laminate, and optical filter. Background technique [0002] Generally, an organic nickel complex absorbs near-infrared rays in the range of 950 nm to 1200 nm, and has excellent properties as a near-infrared absorber. Its main uses are optical filters for semiconductor photosensitive devices with the function of absorbing and isolating near-infrared rays, near-infrared-absorbing films or near-infrared-absorbing plates that shield heat rays in energy-saving functions, and agricultural products for the purpose of selectively utilizing sunlight. Near-infrared absorbing films, recording media utilizing near-infrared heat absorption...

Claims

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Application Information

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IPC IPC(8): C09K3/00B32B7/02C08J5/18C09D5/32C09D7/12C09D201/00C09J7/00C09J185/00G02B5/22
Inventor 成广治宪
Owner TOYO INK SC HOLD CO LTD
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