Desiccant, organic thin film including same, organic layered film in which organic thin film is layered, and electronic device provided therewith

Patent metadata

Field	Value
Publication number	US-2020335727-A1
Application number	US-201816761734-A
Country	US
Kind code	A1
Filing date	Nov 9, 2018
Priority date	Nov 10, 2017
Publication date	Oct 22, 2020
Grant date	—

Abstract

The present invention addresses the problem of providing a desiccant that can be used for passivation of an electronic device such as an organic electroluminescence element against moisture permeation, as well as an organic thin film including the desiccant, an organic layered film in which the organic thin film is layered, and an electronic device that is provided therewith. This desiccant is characterized by including a compound that emits a hydrophobic substance by absorbing water. This organic thin film is characterized by including this desiccant.

First claim

1 . A desiccant comprising a compound which releases a hydrophobic substance upon absorption of water.

2 . An organic thin film containing the desiccant described in claim 1 .

3 . The organic thin film described in claim 2 , wherein the desiccant contains an organometallic oxide.

4 . The organic thin film described in claim 3 , wherein the organometallic oxide has a structure represented by the following Formula (1),
R-[M(OR1)y(O—)x-y]n-R   Formula (1):
wherein, R represents hydrogen atoms, an alkyl group having or more carbon atoms, an alkenyl group, an aryl group, a cycloalkyl group, an acyl group, an alkoxy group, or a heterocyclic group, provided that R may be a carbon chain containing a fluorine atom as a substituent, M represents a metal atom, OR1 represents a fluorinated alkoxy group, x represents a metal valence, y represents any integer between 1 and x, and n represents a degree of polycondensation, respectively.

5 . The organic thin film described in claim 2 , wherein the fluorine ratio of the organic thin film satisfies the following Expression (a),
0.05≤ F/ ( C+F )≤1,   Expression (a):
wherein, F and C represent densities of fluorine and carbon atoms, respectively.

6 . The organic thin film described in claim 4 , wherein the metal atom represented by M is a Group 2 element.

7 . The organic thin film described in claim 6 , wherein the metal atom represented by M is strontium.

8 . The organic thin film described in claim 4 , wherein the organic thin film contains at least two kinds of organometallic oxides having a structure represented by Formula (1), and wherein at least one kind of metal atom is a Group 2 element.

9 . An organic laminated film in which the organic thin film described in claim 2 and another organic thin film are laminated adjacently.

10 . An electronic device comprising: at least an organic functional layer; and an organic thin film described in claim 2 or an organic multilayer film described in claim 9 above the organic functional layer.

11 . The electronic device described in claim 10 , wherein the organic thin film is an elution preventing film and is disposed between the organic functional layer and the organic thin film.

12 . The electronic device described in claim 10 , wherein the electronic device is an organicelectroluminescent element.

Assignees

• Konica Minolta Inc

Inventors

• Makishima Yukihiro
• Taka Hideo
• Kita Hiroshi
• Suzuri Yoshiyuki

Classifications

• H10K59/874

  including getter material or desiccant · CPC title

• B32B2307/73

  Hydrophobic · CPC title

• B32B9/045

  of synthetic resin · CPC title

• B32B2457/206

  Organic displays, e.g. OLED · CPC title

• C08G83/001

  Macromolecular compounds containing organic and inorganic sequences, e.g. organic polymers grafted onto silica · CPC title