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A preparation method of solid-state logic gate based on the assembly of multi-fluorescent molecules and hydrotalcite

A technology of fluorescent molecules and hydrotalcites, which is applied in the field of molecular optical logic gate preparation, can solve the problems of harsh requirements of fluorescent molecules and limitations of fluorescent logic systems.

Active Publication Date: 2019-12-24
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the surface of the exfoliated LDH nanosheets is positively charged, so the requirements for the assembled fluorescent molecules are more stringent.
As a result, the LDH-based fluorescence logic system is subject to certain restrictions

Method used

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  • A preparation method of solid-state logic gate based on the assembly of multi-fluorescent molecules and hydrotalcite
  • A preparation method of solid-state logic gate based on the assembly of multi-fluorescent molecules and hydrotalcite
  • A preparation method of solid-state logic gate based on the assembly of multi-fluorescent molecules and hydrotalcite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Preparation of LDH nanosheets

[0037] Step A: Weigh 15.38g Mg(NO 3 ) 2 ·6H 2 O and 11.25g Al (NO 3 ) 3 ·9H 2 O(Mg / Al=2) dissolved in 150ml to remove CO 2 , Deionized water to prepare mixed salt solution. Take another 45ml NH 3 ·H 2 O adjusted the above mixed solution to pH 8.5 to obtain a slurry. The slurry was placed in a pressure bomb and reacted at 140°C for 12h. use CO 2 , centrifugal washing with deionized water for 4 times to obtain a slurry, drying in an oven at 60°C for 24 hours, and the obtained powder product is sealed and stored.

[0038] Step B: Add 0.01 g of the powder product obtained in step A into a three-necked flask containing 10 mL of formamide solvent, and at room temperature, N 2 Protective stirring for 24h. After taking out, centrifuge to remove solid impurities to obtain a clear and transparent colloidal solution, which is sealed and stored.

[0039] 2. Preparation of FLU-modified LDH nanosheets

[0040] Step C: take 1.0 g of the ...

Embodiment 2

[0054] 1. Preparation of LDH Nanosheets

[0055] Step A: Weigh 23.04g Mg(NO 3 ) 2 ·6H 2 O and 11.25g Al (NO 3 ) 3 ·9H 2 O, Mg / Al=3, dissolved in 150ml to remove CO 2 , deionized water to prepare mixed salt solution, and another 45ml of NH 3 ·H 2 O adjust the above mixed solution to pH 8 to obtain a slurry. The slurry was placed in a pressure bomb and reacted at 130°C for 10h. use CO 2 , centrifugally washed with deionized water for 4 times to obtain a slurry, dried in an oven at 80° C. for 20 hours, and the obtained powder product was sealed and stored.

[0056] Step B: Add 0.05 g of the powder product obtained in step A into a three-necked flask containing 50 mL of formamide solvent, and at room temperature, N 2 Protective stirring for 20h. After taking out, centrifuge to remove solid impurities to obtain a clear and transparent colloidal solution, which is sealed and stored.

[0057] 2. Preparation of FLU-modified LDH nanosheets

[0058] Step C: Take 0.5 g of t...

Embodiment 3

[0070] 1. Preparation of LDH Nanosheets

[0071]Step A: Weigh 17.64g Zn(NO 3 ) 2 ·6H 2 O and 11.25g Al (NO 3 ) 3 ·9H 2 O, Zn / Al=2, dissolved in 150ml to remove CO 2 , deionized water to prepare mixed salt solution, and another 45ml of NH 3 ·H 2 Adjust the pH of the above mixed solution to 7 to obtain a slurry; place the slurry in a pressure volume bomb, react at 120 °C for 10 h, and use up CO 2 , centrifugally washed with deionized water for 3 times to obtain a slurry, dried in an oven at 70° C. for 18 hours, and the obtained powder product was sealed and stored.

[0072] Step B: Add 0.2 g of the powder product obtained in step A into a three-necked flask containing 150 mL of formamide solvent, and at room temperature, N 2 Protective stirring for 15h. After taking out, centrifuge to remove solid impurities to obtain a clear and transparent colloidal solution, which is sealed and stored.

[0073] 2. Preparation of FLU-modified LDH nanosheets

[0074] Step C: Take 0....

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Abstract

The invention discloses a preparing method of a solid logic door assembled based on multiple fluorescent molecules and hydrotalcite. By selecting three different modes (electrostatic assembling, intercalation-stripping modifying and DNA inserting), LDH and three fluorescent molecules (sulfonated poly p-phenylene APPP, fluorescein FLU and ethidium bromide EB) are successfully assembled. Due to thespectrum characteristics of the three fluorescent molecules, the fluorescent molecules are endowed with the duplex capacity transferring characteristic. Chemical input signals (fluorescent molecules)are responded to through the energy transferring characteristic, the fluorescence intensity of the fluorescent molecules can be controlled, and the fluorescent molecules become the basis of the designof the logic door with the multiple fluorescent molecules. Thus, the logic operations (YES, NOT, AND, INH and INHIBIT) with the fluorescent molecules as the input signals and the fluorescence intensity as the output signals are conducted.

Description

technical field [0001] The invention belongs to the technical field of molecular optical logic gate preparation, and in particular provides a method for preparing a solid-state logic gate based on the assembly of multi-fluorescence molecules and hydrotalcite. Background technique [0002] Molecular systems are capable of information processing and are expected to be used in the development of electronic, chemical and biological computers at the molecular scale, thus attracting great attention. Since De Silva proposed molecular logic gates 20 years ago, various unimolecular logic systems capable of realizing Boolean logic gates (AND, OR and NOT gates, etc.) have developed rapidly. However, even single molecular logic gates with multiple inputs only allow basic logic operations on a single byte. In order to simulate multi-byte information processing devices and devices, the construction of multi-molecular logic gates is crucial. Supramolecules have complex physicochemical pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F3/00
CPCG02F3/00
Inventor 史文颖卫敏符艺李智雄
Owner BEIJING UNIV OF CHEM TECH