Jianguo Mei

US Patent:

20110288253, Nov 24, 2011

Filed:

May 19, 2011

Appl. No.:

13/111350

Inventors:

JOHN R. REYNOLDS - Gainesville FL, US
Pengjie Shi - Gainesville FL, US
Jianguo Mei - Greensboro NC, US
Chad Martin Amb - Gainesville FL, US

Assignee:

UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC. - Gainesville FL

International Classification:

C08F 230/04
C08G 83/00

US Classification:

526240, 528 9

Abstract:

Embodiments of the invention are directed to random conjugated copolymers comprising a plurality of one or more different donor (D) repeating units and a plurality of at least one acceptor (A) repeating unit. At least one of the D units has a solubilizing substituent, statistically a portion of the A repeating units are separated from each other by only one D units and a plurality of the A unit are adjacent to one the D units having the solubilizing substituents. The random conjugated copolymers are black or colored in the neutral state and highly transmissive in the oxidized state. The random conjugated copolymers have the structure -[(D)A]-, where x>1 and n(x+1)≧10 or the structure -[(DA))-(D′A]-, where D represents one substituted D unit and D′ represents another D units and where x≧1, y≧1 and 2n(x+y)≧10. Other embodiments of the invention are directed to forming the -[(D)A]- or -[(DA)-(D′A)]- random conjugated copolymers by condensation polymerizations between monomers containing complementary reactive groups.

US Patent:

20220403100, Dec 22, 2022

Filed:

May 27, 2022

Appl. No.:

17/826734

Inventors:

- Milpitas CA, US
Jianguo MEI - West Lafayette IN, US

International Classification:

C08G 61/12
G02F 1/1516

Abstract:

A method for forming an electrochromic polymer block includes: forming each of reaction units by reacting two or more electron-donor groups, wherein each of the reaction units includes (i) a first backbone formed by the two or more electron-donor groups and (ii) at least one reactive functional group connected to each end of the first backbone; and forming the electrochromic polymer block by reacting at least two of the reaction units with acid-catalyzed cationic polymerization, wherein the electrochromic polymer block includes a second backbone formed by two or more of the first backbones.

US Patent:

20220334443, Oct 20, 2022

Filed:

Apr 6, 2022

Appl. No.:

17/714398

Inventors:

- Milpitas CA, US
Jianguo MEI - West Lafayette IN, US

International Classification:

G02F 1/1516
G02F 1/155
G02F 1/137
G02F 1/13357

Abstract:

A light-emitting electrochromic device with both electrochromic properties and light-emitting properties is disclosed. The light-emitting electrochromic device also shows multiple color-switching properties.

US Patent:

20210096437, Apr 1, 2021

Filed:

Dec 10, 2020

Appl. No.:

17/117524

Inventors:

- Milpitas CA, US
Jianguo MEI - West Lafayette IN, US

International Classification:

G02F 1/1516
G02F 1/1523

Abstract:

A method of making an electrochromic device, includes: providing an electrochromic layer comprising a p-type electrochromic material; providing an ion-storage layer comprising an n-type metal oxide; and tuning the ion-storage layer, the electrochromic layer, or both the ion-storage layer and the electrochromic layer, so that when the electrochromic device is operating, the ion-storage layer operates in a minimally color changing mode.

US Patent:

20200387040, Dec 10, 2020

Filed:

Aug 21, 2020

Appl. No.:

16/999792

Inventors:

- Milpitas CA, US
Jianguo MEI - West Lafayette IN, US

International Classification:

G02F 1/1516
G02F 1/1523

Abstract:

Ion-storage layers for electrochromic devices (ECDs) that are tuned to be minimally color changing (MCC) during operation of the ECDs. In some embodiments, an ion-storage layer is composed of an n-type metal oxide that complements a p-type electrochromic (EC) layer, such as an EC layer made of a p-type EC polymer. In some embodiments, an ion-storage layer may be tuned to be MCC by configuring an ion-storage layer to have a total charge density that is higher than the total charge density of a corresponding EC layer or to have a coloration efficiency lower than the coloration efficiency of the corresponding EC layer, or both. Methods for preparing ion-storage layers are disclosed, including methods for creating highly structured metal oxide having reduced coloration efficiencies. ECD devices incorporating MCC ion-storage layers are also disclosed.

US Patent:

20200369801, Nov 26, 2020

Filed:

Jul 29, 2020

Appl. No.:

16/942000

Inventors:

- Grand Cayman, KY
Jiazhi HE - SHENZHEN, CN
Jianguo MEI - West Lafayette IN, US

International Classification:

C08F 28/06
C08F 4/70

Abstract:

Various photocrosslinkable electrochromic polymers are disclosed. The polymers are suitable for an electrochromic layer of an electrochromic device. The polymers are formed with a two-step synthesis method that includes forming a polymer precursor with one or more chromophore blocks, and mixing the polymer precursor with photocrosslinkable monomer units to form the polymer.

US Patent:

20200102286, Apr 2, 2020

Filed:

Sep 27, 2019

Appl. No.:

16/586148

Inventors:

- Milpitas CA, US
Jianguo MEI - West Lafayette IN, US

Assignee:

AMBILIGHT INC. - Milpitas CA

International Classification:

C07D 333/10
C07D 409/04
C07D 409/10
C07D 495/08
C08G 75/02
C08G 61/12

Abstract:

The present invention generally relates to electrochromic compounds and the uses thereof, particularly to series of fluoroalkyl 3,4-dioxythiophene compounds and their electrochromic polymers or co-polymers. Both compositions and process for manufacturing thereof are in the scope of this invention.

US Patent:

20180076403, Mar 15, 2018

Filed:

Aug 18, 2017

Appl. No.:

15/680264

Inventors:

- West Lafayette IN, US
Ameya Sanjay Kulkarni - West Lafayette IN, US
Jianguo Mei - West Lafayette IN, US
Yan Zhao - West Lafayette IN, US

Assignee:

Purdue Research Foundation - West Lafayette IN

International Classification:

H01L 51/05
B05D 1/18

Abstract:

The present invention relates to a process for functionalizing a surface of semi-conductors, conductors, and dielectrics using an amine-borane bearing a functionality from a group of, but not limited to, alkene, alkyne, hydroxyl, thiol, acetal, ester, amide, nitrile, nitro, or alkoxysilane, under a mild condition. Products of this facile process are also in the scope of this disclosure.