Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of surface plasmon polariton self-assembly chiral structure based on light-operated symmetry breaking

A surface plasmon and chiral structure technology, applied in optical components, optics, instruments, etc., can solve the problems of living cell damage, light control symmetry breaking, long cycle, etc., to achieve light source safety and overcome complex problems Chemical catalytic reaction, overcoming the effect of complex chemical synthesis process

Active Publication Date: 2020-06-23
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF9 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, photocontrolled symmetry breaking in the field of chemical synthesis is still very difficult because the stereo configuration of most molecular functional groups is an inherent property.
Only with the help of complex photocatalytic reactions, this type of chemical reaction has a long cycle and complicated means
More importantly, most molecules can only respond to incident light in the ultraviolet spectral region, and the irradiation of ultraviolet light will inevitably cause damage to living cells

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1. Preparation of side-by-side self-assembled structure of gold nanorods

[0034] Wherein, the preparation process of gold nanorods is as follows:

[0035] 1. Gold Seed Preparation

[0036] Get 7.5ml of 0.1mol / L CTAB solution, add 1.8ml of water, add concentration under stirring condition and be the chloroauric acid (HAuCl) of 24.7mmol / L 4 ) solution of 100.4μl, add 0.01mmol / L sodium borohydride (NaBH 4 ) solution 600 μl, stirred for 3 minutes to obtain gold species for later use;

[0037] 2. Growth medium preparation

[0038] Get 0.1mol / L CTAB solution 100ml, add concentration and be the chloroauric acid (HAuCl 4 ) in 2 mL of aqueous solution, 120 μL of silver nitrate aqueous solution with a concentration of 0.1 mol / L, and 552 μL of ascorbic acid aqueous solution with a concentration of 0.1 mol / L. After the mixed solution was left to stand for 12 hours, 552 μL of an aqueous solution of ascorbic acid with a concentration of 0.1 mol / L was added twice, with an i...

Embodiment 2

[0057] Step 1. Preparation of side-by-side self-assembled structure of gold nanorods

[0058] Wherein, the preparation process of gold nanorods is as follows:

[0059] 1. Gold Seed Preparation

[0060] Get 7.5ml of 0.1mol / L CTAB solution, add 1.8ml of water, add concentration under stirring condition and be the chloroauric acid (HAuCl) of 24.7mmol / L 4 ) solution of 100.4μl, add 0.01mmol / L sodium borohydride (NaBH 4 ) solution 600 μl, stirred for 3 minutes to obtain gold species for later use;

[0061] 2. Growth medium preparation

[0062] Get 0.1mol / L CTAB solution 100ml, add concentration and be the chloroauric acid (HAuCl 4 ) in 2 mL of aqueous solution, 120 μL of silver nitrate aqueous solution with a concentration of 0.1 mol / L, and 552 μL of ascorbic acid aqueous solution with a concentration of 0.1 mol / L. After the mixed solution was left to stand for 12 hours, 552 μL of an aqueous solution of ascorbic acid with a concentration of 0.1 mol / L was added twice, with an i...

Embodiment 3

[0081] Step 1. Preparation of side-by-side self-assembled structure of gold nanorods

[0082] Wherein, the preparation process of gold nanorods is as follows:

[0083] 1. Gold Seed Preparation

[0084] Get 7.5ml of 0.1mol / L CTAB solution, add 1.8ml of water, add concentration under stirring condition and be the chloroauric acid (HAuCl) of 24.7mmol / L 4 ) solution of 100.4μl, add 0.01mmol / L sodium borohydride (NaBH 4 ) solution 600 μl, stirred for 3 minutes to obtain gold species for later use;

[0085] 2. Growth medium preparation

[0086] Get 0.1mol / L CTAB solution 100ml, add concentration and be the chloroauric acid (HAuCl 4) in 2 mL of aqueous solution, 120 μL of silver nitrate aqueous solution with a concentration of 0.1 mol / L, and 552 μL of ascorbic acid aqueous solution with a concentration of 0.1 mol / L. After the mixed solution was left to stand for 12 hours, 552 μL of an aqueous solution of ascorbic acid with a concentration of 0.1 mol / L was added twice, with an in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
laser intensityaaaaaaaaaa
Login to View More

Abstract

The invention provides a visible / near-infrared light control chiral symmetry breaking method, and belongs to the field of nano photonic material application. The invention aims to provide a chiral symmetry breaking composite structure based on optical response of a nano excimer assembly. By designing and constructing a racemization mixed solution of a chiral gold nanorod self-assembly composite structure, a chiral symmetry breaking effect driven by left-handed or right-handed circularly polarized light is obtained. Different from chiral symmetric breaking of a traditional ultraviolet light driven molecule / supramolecular system, the method provided by the invention realizes chiral symmetric breaking by utilizing circularly polarized light in a biological tissue transmission window (650-900nm); under the resonance / non-resonance excitation mode of the nano plasmon assembly, different chiral symmetry breaking effects can be selectively realized; and only milliwatt-level low-power laser energy input is needed for achieving chiral symmetry breaking. The method is high in biocompatibility and simple in synthesis step, and can be well applied to the fields of light-operated chiral recognition, light-operated chiral separation and the like.

Description

technical field [0001] The invention belongs to the field of application of nanophotonic materials, and utilizes left-handed / right-handed circularly polarized light in visible / near-infrared bands to control the chiral symmetry breaking of gold nanorod self-assembly in vitro racemic mixed solution. [0002] technical background [0003] The use of circularly polarized light to achieve chiral symmetry breaking has important applications in chemical and biological research. Existing studies have successfully utilized circularly polarized light to achieve symmetry-breaking effects on racemic molecular / supramolecular systems. However, it is still very difficult to achieve photocontrolled symmetry breaking in the field of chemical synthesis because the stereo configuration of most molecular functional groups is an inherent property. Only with the help of complex photocatalytic reactions, this type of chemical reaction has a long cycle and complicated means. More importantly, most...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/00
CPCG02B5/008
Inventor 王荣瑶赵文静
Owner BEIJING INSTITUTE OF TECHNOLOGYGY