Patents by Inventor Kim Kian Choo

Kim Kian Choo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • n-Doped electrically conductive polymeric material
    Patent number: 10763438
    Abstract: There is provided a material comprising a n-doped electrically conductive polymer comprising at least one electron-deficient aromatic moiety, each electron-deficient aromatic moiety having a gas-phase electron affinity (EA) of 1-3 eV; and at least one counter-cation covalently bonded to the polymer or to a further polymer comprised in the material, the polymer being n-doped to a charge density of 0.1-1 electron per electron-deficient aromatic moiety, the polymer being capable of forming a layer having a vacuum workfunction (WF) of 2.5-4.5 eV, and wherein all the counter-cations comprised in the material are immobilised such that any electron in the polymer cannot significantly diffuse or migrate out of the polymer. There is also provided a method of preparing the material.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: September 1, 2020
    Assignee: National University of Singapore
    Inventors: Lay-Lay Chua, Peter Kian-Hoon Ho, Rui-Qi Png, Mervin Chun-Yi Ang, Kim-Kian Choo, Cindy Guan-Yu Tang
  • A N-DOPED ELECTRICALLY CONDUCTIVE POLYMERIC MATERIAL
    Publication number: 20180277764
    Abstract: There is provided a material comprising a n-doped electrically conductive polymer comprising at least one electron-deficient aromatic moiety, each electron-deficient aromatic moiety having a gas-phase electron affinity (EA) of 1-3 eV; and at least one counter-cation covalently bonded to the polymer or to a further polymer comprised in the material, the polymer being n-doped to a charge density of 0.1-1 electron per electron-deficient aromatic moiety, the polymer being capable of forming a layer having a vacuum workfunction (WF) of 2.5-4.5 eV, and wherein all the counter-cations comprised in the material are immobilised such that any electron in the polymer cannot significantly diffuse or migrate out of the polymer. There is also provided a method of preparing the material.
    Type: Application
    Filed: July 1, 2016
    Publication date: September 27, 2018
    Inventors: Lay-Lay Chua, Peter Kian-Hoon Ho, Rui-Qi Png, Mervin Chun-Yi Ang, Kim-Kian Choo, Cindy Guan-Yu Tang
  • Cross-linking moiety
    Patent number: 9745252
    Abstract: A cross-linking moiety having a general formula I: ArF-W, wherein ArF comprises a fluorinated phenyl azide group having at least one non-fluorine substituent that is bulkier than fluorine at a meta position relative to the azide group, and W comprises an electron-withdrawing group.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: August 29, 2017
    Assignee: NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: Peter Ho, Lay-Lay Chua, Richard Henry Friend, Jie-Cong Tang, Rui-Qi Png, Bibin Thomas Anto, Perq-Jon Chia, Zhi Kuang Tan, Kim Kian Choo
  • CROSS-LINKING MOIETY
    Publication number: 20120244294
    Abstract: A cross-linking moiety having a general formula I: N3—ArF—W, wherein ArF comprises a fluorinated phenyl azide group having at least one non-fluorine substituent that is bulkier than fluorine at a meta position relative to the azide group, and W comprises an electron-withdrawing group.
    Type: Application
    Filed: December 6, 2010
    Publication date: September 27, 2012
    Inventors: Peter Ho, Lay-Lay Chua, Richard Henry Friend, Jie-Cong Tang, Rui-Qi Png, Bibin Thomas Anto, Perq-Jon Chia, Zhi Kuang Tan, Kim Kian Choo