A three-dimensional highly connected cd(ii) photochromic coordination polymer responsive to sunlight and its preparation method
A coordination polymer, photochromic technology, applied in the field of chemistry, can solve the problems of short lifespan of photogenerated radicals, flooding, limited application, etc., and achieve the effects of high yield, convenient operation and good repeatability
Active Publication Date: 2021-08-10
嘉兴尚坤科技有限公司
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Problems solved by technology
However, the photogenerated free radicals produced by many photochromic materials upon exposure to light have a short lifetime, causing them to quickly change back to their original color, so that the printed content is quickly submerged in the background, which limits their use in ink-free and printable applications. Erase printing applications
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[0019] Hide 3 L (39.2mg, 0.1mmol), CD (OAC) 2 · 2h 2 O (26.7mg, 0.1mmol), Debpy · Br 2 (18.5mg, 0.05mmol) and 15ml H 2 O Seals in a 20 mL of the reactor with polytetrafluoroethylene lining, crystallization at 140 ° C for 3 days. When the mixture was naturally cooled to room temperature, the light yellow crystals of the coating polymer were obtained by filtration, washing and drying, and the yield was 40%.
[0020] The main infrared absorption peaks are: 3730 (W), 3406 (M), 3056 (W), 1722 (W), 1540 (s), 1447 (S), 1371 (S), 1265 (M), 1127 (M) ), 1039 (M), 933 (W), 821 (W), 769 (M), 733 (W), 671 (W), 614 (W), 471 (W).
[0021] Related characterization of coordination polymers
[0022] (1) Determination of crystal structure of coordination polymer
[0023] The crystal data of the coordination polymer is collected on the Bruker Smart Apex II diffractometer, and the ray source is MOK. α The temperature is 293 k. Correction using technical scans. The crystal structure is solved by the ...
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A solar light-responsive three-dimensional highly connected Cd(II) photochromic coordination polymer and a preparation method thereof belong to the field of chemical technology, and the coordination polymer has the following chemical formula: [Cd 5 (DEBPY) 0.5 (HL)(L) 3 (H 2 O) 3 ]·2H 2 O, where DEBPY is 1,1'-diethyl-4,4'-bipyridine, H 3 L is 3,5-dicarboxy-phenyl-4-(2'-carboxyphenyl)-benzyl ether. A certain amount of H 3 L, Cd(OAc) 2 2H 2 O. DEBPY Br 2 and H 2 O was sealed in a Teflon-lined reactor and crystallized at high temperature for 3 days. The mixture was naturally cooled to room temperature, filtered, washed and dried to obtain a light yellow crystal of the coordination polymer with a yield of 40%. The synthesis method of the coordination polymer is green and environment-friendly, does not need any toxic organic solvent, has good repeatability, high yield, mild conditions and convenient operation. The coordination polymer crystal sample can be used as a printing medium for inkless and erasable printing, and the color change process can be realized under sunlight irradiation, and the operation is convenient. At the same time, the print-erasing process can be reused for multiple rounds.
Description
Technical field [0001] The invention belongs to the chemical technique, and it relates to a coordination polymer and a method of preparation thereof. Specifically, a three-dimensional high-linker Cd (II) photoencemic coordination polymer thereof and a preparation method thereof is related to a solar photoelectric connection. Background technique [0002] Photocchaboration materials refer to substances that can change their own color under irradiation of light. If the discolored material can restore the original color by illuminating other wavelengths, dark placing or heating treatment, etc., such a substance is referred to as a reversible light-like material, otherwise it is irreversible light-like material. In recent years, photoloration materials have been applied in many aspects of information storage elements, decoration and protective packaging materials, self-developing holographic recordings, and defense, etc., are materials with extensive application prospects. The photoe...
Claims
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IPC IPC(8): C08G83/00C09K9/02C09D11/50C09D11/03C09D11/037C09D11/102
CPCC08G83/008C09D11/03C09D11/037C09D11/102C09D11/50C09K9/02C09K2211/188
Inventor 温世正阚卫秋
Owner 嘉兴尚坤科技有限公司