Arthur J Epstein

US Patent:

6621100, Sep 16, 2003

Filed:

Oct 26, 2001

Appl. No.:

10/045543

Inventors:

Arthur J. Epstein - Bexley OH
Vladimir N. Prigodin - Dublin OH

Assignee:

The Ohio State University - Columbus OH

International Classification:

H01L 5100

US Classification:

257 40, 257295, 257422, 257425, 257427, 3603241, 3603242, 365171, 365173

Abstract:

This invention relates to organic based spintronic devices, and electronic devices comprising them, including spin valves, spin tunnel junctions, spin transistors and spin light-emitting devices. New polymer-, organic- and molecular-based electronic devices in which the electron spin degree of freedom controls the electric current to enhance device performance. Polymer-, organic-, and molecular-based spintronic devices have enhanced functionality, ease of manufacture, are less costly than inorganic ones. The long spin coherence times due to the weak spin-orbit interaction of carbon and other low atomic number atoms that comprise organic materials make them ideal for exploiting the concepts of spin quantum devices. The hopping mechanism of charge transport that dominates in semiconducting polymers (vs. band transport in crystalline inorganic semiconductors) enhances spin-magneto sensitivity and reduces the expected power loss.

US Patent:

6623870, Sep 23, 2003

Filed:

Jul 29, 1997

Appl. No.:

08/901888

Inventors:

Arthur J. Epstein - Bexley OH
Yunzhang Wang - Columbus OH
Darren D. Gebler - Columbus OH
Timothy M. Swager - Newton MA

Assignee:

The Ohio State University - Columbus OH

International Classification:

H05B 3314

US Classification:

428690, 428917, 313504, 313506, 526265, 526268, 526281, 528205, 528211, 528219

Abstract:

In general terms, the present invention includes a light emitting polymeric material the light emitting polymeric material capable of producing electroluminescence upon being provided with a flow of electrons, the light emitting polymeric material comprising a plurality of polymeric chains comprising polymeric chains each having substituent moieties of sufficient number and size and extending from the polymeric chain and about a substantial portion of the circumference about the polymer chain so as to maintain the polymeric chains in a sufficiently deaggregated state (referred to herein as a âstrappedâ polymer), so as to substantially prevent the redshifting of the electroluminescence and the lowering of light emission efficiency of the electroluminescence.

US Patent:

6777532, Aug 17, 2004

Filed:

Feb 28, 2002

Appl. No.:

10/084866

Inventors:

Arthur J. Epstein - Columbus OH
Daike Wang - Duncan SC

Assignee:

The Ohio State University - Columbus OH

International Classification:

C08G 7306

US Classification:

528423, 528212, 528230, 528242, 528244, 528425, 525 88

Abstract:

The invention relates to polymers and oligomers, methods of their synthesis, and electronic devices comprising them.

US Patent:

6833283, Dec 21, 2004

Filed:

Jul 16, 2002

Appl. No.:

10/196524

Inventors:

Arthur J. Epstein - Bexley OH
Yunzhang Wang - Columbus OH
Runguan Sun - Shanghai, CN

Assignee:

The Ohio State University - Columbus OH

International Classification:

H01L 2100

US Classification:

438 82, 438 99, 438780

Abstract:

The present invention includes methods for fabricating polymer light emitting devices by lamination. The invention also includes methods for fabricating electroluminescent polymer devices and electroluminescent polymer systems, and machines or instruments using those aspects of the invention.

US Patent:

6872471, Mar 29, 2005

Filed:

Mar 5, 2001

Appl. No.:

09/799171

Inventors:

Arthur J. Epstein - Bexley OH, US
Qianbing Zheng - Powell OH, US
Run G. Sun - Columbus OH, US

Assignee:

The Ohio State University Research Foundation - Columbus OH

International Classification:

H05B033/00
H01L031/12
H01S003/00
G02B027/00

US Classification:

428690, 428917, 313504, 313110, 257 80, 257 98, 359109, 359350, 372 4, 372 5, 372 6, 372 7, 372 70, 372 81, 372 99, 385100, 385101, 385901

Abstract:

The present invention includes infrared emitting materials and infrared emitting devices. The present invention demonstrates 1. 54 micron infrared PL and EL emission from an organic complex. This provides a very simple way to obtain a light source at 1. 54 micron wavelength that may be both optically and electrically pumped.

US Patent:

6906166, Jun 14, 2005

Filed:

May 18, 2004

Appl. No.:

10/847896

Inventors:

Arthur J. Epstein - Columbus OH, US
Daike Wang - Duncan SC, US

Assignee:

The Ohio State University - Columbus OH

International Classification:

C08G073/06

US Classification:

528423, 528212, 528230, 528242, 528244, 528425, 525 88

Abstract:

The invention relates to polymers and oligomers, methods of their synthesis, and electronic devices comprising them.

US Patent:

6962757, Nov 8, 2005

Filed:

Aug 27, 2003

Appl. No.:

10/649056

Inventors:

Arthur J. Epstein - Bexley OH, US
Yunzhang Wang - Duncan SC, US
Darren D. Gebler - Sleepy Hollow NY, US
Timothy M. Swager - Newton MA, US

Assignee:

The Ohio State Universtiy Research Foundation - Columbus OH

International Classification:

H05B033/14
C09K011/06

US Classification:

428690, 428917, 313504, 313506, 257 40, 25230135

Abstract:

In general terms, the present invention includes a light emitting polymeric material the light emitting polymeric material capable of producing electroluminescence upon being provided with a flow of electrons, the light emitting polymeric material comprising a plurality of polymeric chains comprising polymeric chains each having substituent moieties of sufficient number and size and extending from the polymeric chain and about a substantial portion of the circumference about the polymer chain so as to maintain the polymeric chains in a sufficiently deaggregated state (referred to herein as a “strapped” polymer), so as to substantially prevent the redshifting of the electroluminescence and the lowering of light emission efficiency of the electroluminescence.

US Patent:

7071290, Jul 4, 2006

Filed:

Apr 28, 2005

Appl. No.:

11/116580

Inventors:

Arthur J. Epstein - Columbus OH, US
Daike Wang - Duncan SC, US

Assignee:

The Ohio State University - Columbus OH

International Classification:

C08G 73/06

US Classification:

528423, 528212, 528230, 528242, 528244, 528425

Abstract:

The invention relates to polymers and oligomers, methods of their synthesis, and electronic devices comprising them.