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 du

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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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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