JPH01111472A - Monomolecular film cumulation device and monomolecular film cumulation method using said device - Google Patents

Abstract

PURPOSE:To cumulate continuously monomolecular films by providing a support section of a structure with a base retaining tool moving up and down and a roller-shaped revolving sample mounting section installed at the end of the support section. CONSTITUTION:A marking device is constituted of a water tank 1, a substance 4 forming films, a pressurizing section 5 to adjust the surface pressure when the film substance 4 is floated on the water tank 1 and a base retaining tool 7. A support section 7a of a structure moving up and down and a roller-shaped revolving sample mounting section 7b installed at the end of the support section 7a are provided on said retaining tool 7. Monomolecular films are cumulated continuously by setting a cylindrical or sheet-shaped base 6 on said roller-shaped sample mounting section 7b and revolving the base 6. Film layers can be selected and cumulated continuously in a short period of time easily.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a monolayer accumulation device and a monolayer accumulation method using the same.

Conventional technology Recently, "molecular electronics" and "biochip"
This includes the use of advanced biotechnological methods such as electrochemical manipulation, which goes beyond the mere use of organic materials in conventional electronic technology.
There is a background in which proposals have been made to create organic IC chips using living cells. Ultimately, these technologies aim to be new technologies that go beyond conventional electronics, and the gist of these is to provide the functionality of electronic devices to individual molecules or collections of small numbers of molecules. The basic structure of the device is considered to be a thin organic film (organic thin film) with a thickness of about 100 A and made of biological materials such as proteins. To create such a device, it is necessary to establish a technology to form a thin film at the molecular level while maintaining its ultrafine structure. For this purpose, a single-molecule accumulation method is an effective method for forming thin films, such as the Langmuir-Prodgett method (LB
law) is attracting attention.

A conventional single molecule accumulation device and single molecule accumulation method, ie, monolayer accumulation method, is shown in FIG.

The single molecule accumulator includes a water tank 1, a water temperature adjustment section 2, three layers of pure water, a film material 4, a barrier 6 for adjusting the surface pressure when the film material is floated in the water tank, that is, when it is developed, a substrate 6, and a substrate holder. It consists of 7 ingredients.

The monolayer accumulation method will be explained below.

First, in the monomolecular film accumulation method, in order to form a uniform film, a clean water tank 1° and clean pure water 3 are used to avoid contamination with impurities. Further, in order to clean the water surface, an aspirator (suction pump) 8 sucks and removes dirt on the water surface. After that, a membrane material 4 in which an organic molecule having a hydrophilic group and a hydrophobic group in one molecule is dissolved in a volatile non-aqueous solvent such as chloroform is dropped onto the water surface surrounded by a barrier 5 installed inside the aquarium 1. Let it unfold. After the solvent has evaporated, the area surrounded by the barrier 5 is reduced to apply surface pressure to the single molecules within the barrier 6, forming a solid film 4. Single molecules are accumulated on the substrate 6 by moving the clean substrate 6 up and down perpendicular to the water surface, that is, in a direction transverse to the solid film 4, while applying a constant and appropriate surface pressure to the solid film using the barrier 6. This is possible.

Various surface-active substances can be used as molecules for forming a monolayer. Rather than homogeneous membranes in which the monolayers constituting the membrane are all the same, by appropriately replacing the monolayers on the water surface, we can create heterogeneous membranes such as MumuBB..., MuBAB... It is also possible to create a membrane. Furthermore, it is also possible to create a mixed film by mixing several types of different film-forming molecules to create a multicomponent monolayer.

Problems to be Solved by the Invention According to the conventional method, the substrate 6 is supported by the substrate holder 7 and is moved up and down repeatedly in a direction across the solid film 4 with a constant surface pressure, thereby forming many layers of solid films on the substrate. Although monomolecular films are accumulated, accumulating many layers on one substrate is very time consuming and requires a long time for exclusive use of the equipment, resulting in extremely poor work efficiency and is unsuitable for mass production. Furthermore, in the conventional vertical insertion method, ie, the method of film accumulation in which the substrate perpendicularly traverses the solid film, the depth of the water tank must be increased as the substrate size increases.

Means for Solving the Problems The present invention provides a method for forming a film using a support part having a structure in which a substrate holder moves up and down, and a rotating roller-shaped substrate mounting part provided at the tip of the support part, and the substrate holder is installed in a water tank. The water surface is divided into two parts, and a monomolecular film can be continuously accumulated on a cylindrical or sheet-shaped substrate set in the roller-shaped substrate mounting part by rotating the roller-shaped substrate mounting part.

Function: Since the board mount divides the water surface of the aquarium into two, two types of membrane materials are used to create MumuBB...MuBAB...
It is possible to create a hetero membrane such as... Also,
Three types (X, Y, Z) of membrane structures can be selectively created. Furthermore, it is possible to form a cumulative film over a large area when the substrate is cylindrical or sheet-like. In the case of a sheet, it can be wound around a roller to accumulate a film, then returned to a flat plate and cut and divided.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. The substrate holder 7 of the present invention is composed of two supporting parts 7a having a vertically movable structure and a roller-shaped board mounting part 7b sandwiched between the two supporting parts. The part rotates. For example, a sheet-shaped substrate 6 is set around the roller-shaped substrate mounting portion 7b.

This situation is shown in FIG. 1a.

The surface of the pure water 3 in the water tank 1 is kept clean, and the substrate holder 7 on which the substrate is set is lowered so that, for example, the rotating shaft of the substrate mounting part 7b which divides the pure water surface into two is placed on the water surface. Install it so that it is approximately in the same position as the This situation is shown in FIG. 1(b).

Next, the membrane layer 4 is dropped onto the water surface, spread out, and the surface pressure is adjusted by the barrier 5, and while keeping the pressure constant, the substrate attachment part 7b is rotated to continuously accumulate the membrane layer, that is, the monomolecular film 4. conduct. At this time, when the direction of rotation of the substrate mounting portion 7b is kept constant, different films can be accumulated by selecting the water surface and film layer quality.

For example, if the membrane material 4 is developed only on the water surface side,
If the film material 4 is spread on both the water surface and the B side of the mold, a Y-shaped film can be accumulated, and when the film material 4 is spread only on the water surface B side, a Z-shaped film can be accumulated. (Second
figure).

The x-, y-, and z-type film layers accumulated in this manner are shown in FIG.

Furthermore, by using different film layer properties on the mu side and the B side of the water surface, the combination of man, B, mu, B, etc. can be changed by changing the direction of rotation. be able to.

In this embodiment, a sheet-shaped substrate is used as the substrate, but a cylindrical substrate may also be used.

Effects of the Invention According to the present invention, there is no need to change the depth of the water tank depending on the substrate size, compared to the conventional vertical insertion method.

In addition, it is possible to continuously accumulate a film on a sheet-like or cylindrical substrate, and it is also possible to select a film layer and easily accumulate the film continuously and in a short time. Furthermore, since a large area of substrates can be processed, the present invention provides an apparatus that has very high working efficiency and is suitable for mass production.

[Brief explanation of the drawing]

FIG. 1(a) is a perspective view of a sheet-like substrate set on a roller-shaped substrate holder in an apparatus according to an embodiment of the present invention, and FIG. 1(b) is a perspective view of the substrate holder inserted into a water tank. The cross-sectional views in Figures 2 (a) to (C) show how different film layers are accumulated by selectively spreading and using the film material on the water surface divided into two by the same substrate holder. 3A to 3C are cross-sectional views showing three types of film layers accumulated using the method of this embodiment, and FIG. 4 is a configuration diagram showing a conventional device. 1... Water tank, 2... Water temperature adjustment section, 3.
...Pure water, 4...Membrane material, 6...
- Barrier, 6... substrate, 7... substrate holder. Name of agent: Patent attorney Toshio Nakao and one other person
Water tank 3 - water haze 2 figure vinegar 3 figure

Claims (3)

[Claims] (1) It has a water tank, a substance that forms a film, a pressure unit for adjusting the surface pressure when the film material is floated in the water tank, and a substrate holder, and the holder moves up and down. A monomolecular film accumulation device comprising a structural support part and a rotating roller-shaped sample mounting part provided at an end of the support part. (2) The monomolecular film accumulation device according to claim 1, wherein the roller-shaped sample mounting portion divides the water surface of the water tank into two. (3) A water tank, a film-forming substance, a pressure unit for adjusting the surface pressure when the film material is floated in the water tank, and a substrate holder are provided, and the holder moves up and down. Using a monolayer accumulator having a structural support and a rotating roller-like sample attachment provided at the end of the support,
A monomolecular film accumulation method in which a cylindrical or sheet-like substrate is set on the roller-shaped sample attachment part, and a monomolecular film is continuously accumulated by rotating the roller.