Vapochromic LED
Abstract
A sandwich device was prepared by electrodeposition of an insoluble layer of oligomerized tris(4-(2-thienyl)phenyl)amine onto conducting indium-tin oxide coated glass, spin coating the stacked platinum compound, tetrakis(p-decylphenylisocyano)platinum tetranitroplatinate, from toluene onto the oligomer layer, and then coating the platinum complex with aluminum by vapor deposition. This device showed rectification of current and gave electroluminescence. The electroluminescence spectrum (.mu..sub.max =545 nm) corresponded to the photoluminescence spectrum of the platinum complex. Exposure of the device to acetone vapor caused the electroemission to shift to 575 nm. Exposure to toluene vapor caused a return to the original spectrum. These results demonstrate a new type of sensor that reports the arrival of organic vapors with an electroluminescent signal. The sensor comprises (a) a first electrode; (b) a hole transport layer formed on the first electrode; (c) a sensing/emitting layer formed on the hole transport layer, the sensing/emitting layer comprising a material that changes color upon exposure to the analyte vapors; (d) an electron conductor layer formed on the sensing layer; and (e) a second electrode formed on the electron conductor layer. The hole transport layer emits light at a shorter wavelength than the sensing/emitting layer and at least the first electrode comprises an opticallymore »
- Inventors:
-
- Hiroshima, JP
- North Oaks, MN
- Minnetonka, MN
- Kearney, NE
- Issue Date:
- Research Org.:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- OSTI Identifier:
- 874200
- Patent Number(s):
- 6338977
- Application Number:
- 10/638269
- Assignee:
- Regents of the University of Minnesota (Minneapolis, MN)
- Patent Classifications (CPCs):
-
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- DOE Contract Number:
- CHE-9216003; CHE-9307837
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- vapochromic; led; sandwich; device; prepared; electrodeposition; insoluble; layer; oligomerized; tris4-2-thienylphenylamine; conducting; indium-tin; oxide; coated; glass; spin; coating; stacked; platinum; compound; tetrakisp-decylphenylisocyanoplatinum; tetranitroplatinate; toluene; oligomer; complex; aluminum; vapor; deposition; rectification; current; electroluminescence; spectrum; musubmax; 545; nm; corresponded; photoluminescence; exposure; acetone; caused; electroemission; shift; 575; return; original; results; demonstrate; type; sensor; reports; arrival; organic; vapors; electroluminescent; signal; electrode; hole; transport; formed; sensingemitting; comprising; material; changes; color; analyte; electron; conductor; sensing; emits; light; shorter; wavelength; optically; transparent; vapor deposition; organic vapor; coated glass; /438/73/
Citation Formats
Kunugi, Yoshihito, Mann, Kent R, Miller, Larry L, and Exstrom, Christopher L. Vapochromic LED. United States: N. p., 2002.
Web.
Kunugi, Yoshihito, Mann, Kent R, Miller, Larry L, & Exstrom, Christopher L. Vapochromic LED. United States.
Kunugi, Yoshihito, Mann, Kent R, Miller, Larry L, and Exstrom, Christopher L. Tue .
"Vapochromic LED". United States. https://www.osti.gov/servlets/purl/874200.
@article{osti_874200,
title = {Vapochromic LED},
author = {Kunugi, Yoshihito and Mann, Kent R and Miller, Larry L and Exstrom, Christopher L},
abstractNote = {A sandwich device was prepared by electrodeposition of an insoluble layer of oligomerized tris(4-(2-thienyl)phenyl)amine onto conducting indium-tin oxide coated glass, spin coating the stacked platinum compound, tetrakis(p-decylphenylisocyano)platinum tetranitroplatinate, from toluene onto the oligomer layer, and then coating the platinum complex with aluminum by vapor deposition. This device showed rectification of current and gave electroluminescence. The electroluminescence spectrum (.mu..sub.max =545 nm) corresponded to the photoluminescence spectrum of the platinum complex. Exposure of the device to acetone vapor caused the electroemission to shift to 575 nm. Exposure to toluene vapor caused a return to the original spectrum. These results demonstrate a new type of sensor that reports the arrival of organic vapors with an electroluminescent signal. The sensor comprises (a) a first electrode; (b) a hole transport layer formed on the first electrode; (c) a sensing/emitting layer formed on the hole transport layer, the sensing/emitting layer comprising a material that changes color upon exposure to the analyte vapors; (d) an electron conductor layer formed on the sensing layer; and (e) a second electrode formed on the electron conductor layer. The hole transport layer emits light at a shorter wavelength than the sensing/emitting layer and at least the first electrode comprises an optically transparent material.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}
Works referenced in this record:
A Vapochromic LED
journal, January 1998
- Kunugi, Yoshihito; Mann, Kent R.; Miller, Larry L.
- Journal of the American Chemical Society, Vol. 120, Issue 3
Light-emitting diodes based on linear and starburst electro-oligomerized thienyltriphenylamines
journal, September 1997
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Conjugated Polymer Surfaces and Interfaces for Light-Emitting Devices
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“Vapochromic” Compounds as Environmental Sensors. 2. Synthesis and Near-Infrared and Infrared Spectroscopy Studies of [Pt(arylisocyanide) 4 ][Pt(CN) 4 ] upon Exposure to Volatile Organic Compound Vapors
journal, January 1997
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- Chemistry of Materials, Vol. 9, Issue 1
Progress in Electroluminescent Devices Using Molecular Thin Films
journal, June 1997
- Tsutsui, Tetsuo
- MRS Bulletin, Vol. 22, Issue 6
Inclusion of Organic Vapors by Crystalline, Solvatochromic [Pt(aryl isonitrile)4][Pd(CN)4] Compounds. "Vapochromic" Environmental Sensors
journal, January 1995
- Exstrom, Christopher L.; Sowa, John R. Jr.; Daws, Charles A.
- Chemistry of Materials, Vol. 7, Issue 1