Patents by Inventor William Tarran

William Tarran 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).

  • Patent number: 11349086
    Abstract: A compound of formula (I) or (III) (Formulae (I), (III)) wherein: one Y is a substituent R1 bound directly to the fluorene unit of formula (I) by an sp3-hybridised carbon atom; the other Y is an aryl or heteroaryl group Ar1 that may be unsubstituted or substituted with one or more substituents; Ar2 is an arylene or heteroarylene group; R2 is a substituent; b is 0, 1, 2, 3 or 4; c is 0, 1, 2 or 3; and X is a group of formula (II): (Formula (II)) wherein Z is O or S; R3 independently in each occurrence is a substituent; each x is independently 0, 1, 2 or 3; and * is a bond to the fluorene unit of formula (I). The compounds may be used as host materials for phosphorescent dopants in organic light-emitting devices.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: May 31, 2022
    Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Kiran Kamtekar, William Tarran, Martin Humphries, Florence Bourcet
  • Patent number: 11283030
    Abstract: A phosphorescent compound of formula (I): wherein: M is a transition metal; C1 is a carbon atom forming a metal-carbene bond with M; A is a saturated bridged bicyclic or saturated bridged tricyclic group consisting of one nitrogen atom and 6-12 carbon atoms; either: (i) X1 is a bridgehead carbon atom of the bridged bicyclic or bridged tricyclic group and X2 is NR1 wherein R1 is a substituent, or (ii) X1 is N and X2 is a bridgehead group of formula CR6 wherein R6 is H or a substituent; Ar1 is a C6-20 aromatic group or a 5-20 membered heteroaromatic group; L in each occurrence is independently a mono- or poly-dentate ligand other than a ligand of formula A-Ar1; x is at least 1; and y is 0 or a positive integer. The compound of formula (I) may be used as a blue light-emitting material in a white organic light-emitting device.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: March 22, 2022
    Assignee: Sumitomo Chemical Company Limited
    Inventors: James Lee, Martin Humphries, William Tarran, Nazrul Islam
  • Publication number: 20220048937
    Abstract: A composition comprising a semiconducting host compound having a glass transition temperature (Tg) of less than 100° C., and a phosphorescent compound wherein the phosphorescent compound is a metal complex of formula (II): M is Ir (III) or Pt (II). p is at least 1. q is 0, 1 or 2. L is a bidentate ligand substituted with one or two groups X wherein each X independently comprises an aromatic or heteroaromatic group Ar5; the sum of the number of rings comprised in the one or more X groups of formula (II) is at least 12; and at least 75% of the mass of each X is made up of the mass of the aromatic or heteroaromatic ring atoms of Ar5. L2 is a bidentate ligand which is different from L1.
    Type: Application
    Filed: December 12, 2019
    Publication date: February 17, 2022
    Applicant: Sumitomo Chemical Co., Ltd.
    Inventors: Martin Humphries, Kiran Kamtekar, William Tarran, Florence Bourcet, James Lee
  • Patent number: 11136303
    Abstract: A compound of formula (I) wherein Z is a group of formula (II) and Core is selected from groups of formula (IIIa) or (IIIb) wherein X is S or O; R1 is a substituent; n is 0 or a positive integer; Ar1 independently in each occurrence is an arylene group; R2 is a substituent; R3 is a substituent; R4 is an arylene or heteroarylene group; Y is C or Si; a is 1, 2 or 3; b is 0 or a positive integer; and c is 0 or a positive integer. The compound of formula (I) may be used as a host for a light-emitting dopant in an organic light-emitting device.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: October 5, 2021
    Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Martin Humphries, William Tarran, Kiran Kamtekar, Philip Stackhouse, James Lee
  • Patent number: 11040992
    Abstract: A compound of formula (I): wherein M is a transition metal; x is at least 1; z is 0 or a positive integer; L1 is a ligand selected from one of ligands (II-A), (II-B); L2 is a ligand selected from another of ligands of formulae (II-A), (II-B) and (II-C); and L3 is a ligand other than a ligand of formulae (II-A), (II-B) or (II-C): (II-A) (II-B) (II-C) in which each of R1-R6 is substituent and Ar1-Ar3 are each an unsubstituted or substituted aryl or heteroaryl group. The compound of formula (I) may be used as a phosphorescent light-emitting material of an organic light-emitting device.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: June 22, 2021
    Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Kiran Kamtekar, Natasha Conway, William Tarran
  • Publication number: 20210135131
    Abstract: A phosphorescent light-emitting compound of formula (I): wherein: M is Pd(II) or Pt(II); Ar1 is an aromatic or heteroaromatic group; R2—R4 in each occurrence is independently selected from the group consisting of: C1-20 alkyl wherein one or more non-adjacent, non-terminal C atoms may be replaced with O, S, .CO or COO and one or more H atoms may be replaced with F; a group of formula (Ar2)p wherein p is at least 1 and Ar2 in each occurrence is independently a C6-20 aryl or a 5-20 membered heteroaryl which is unsubstituted or substituted with one or more substituents; and and R1 is a group of formula (Ar2)P wherein at least one Ar2 is a 6-membered heteroaromatic ring having C and N ring atoms. The compound of formula (I) may be used as a light-emitting material in a near infrared organic light-emitting device.
    Type: Application
    Filed: June 26, 2019
    Publication date: May 6, 2021
    Applicant: Sumitomo Chemical Company Limited
    Inventors: Kiran KAMTEKAR, William Tarran
  • Publication number: 20210079296
    Abstract: A light-emitting polymer comprising a light-emitting repeat unit in a backbone of the polymer, wherein the polymer has an anisotropy of no more than 0.8 and wherein a transition dipole moment of the light-emitting repeat unit is aligned with the polymer backbone.
    Type: Application
    Filed: November 24, 2020
    Publication date: March 18, 2021
    Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Ruth Pegington, Michael Cass, David Mohamad, Matthew Roberts, William Tarran, Martin Humphries
  • Publication number: 20200411773
    Abstract: A composition which is useful for providing a light emitting device having excellent light emission efficiency contains a compound represented by formula (C-1) and a phosphorescent compound represented by formula (1): Ring R1C to Ring R4C each represents an aromatic hydrocarbon ring or an aromatic hetero ring, RC represents a carbon, silicon, germanium, tin, or lead atom, and M represents a rhodium, palladium, iridium, or a platinum atom. n1 represents an integer of 1 or more, and n2 represents an integer of 0 or more. n1+n2 is 2 or 3. Ring R1A represents a triazole ring, Ring R2 represents an aromatic hydrocarbon ring or an aromatic hetero ring, E1, E2 and E11A to E13A represent a nitrogen atom or a carbon atom, R11A to R13A represent a hydrogen atom, an alkyl group, an aryl group, and A1-G1-A2 represents an anionic bidentate ligand.
    Type: Application
    Filed: April 20, 2018
    Publication date: December 31, 2020
    Inventors: Rui ISHIKAWA, William TARRAN, Kiran Timothy KAMTEKAR
  • Patent number: 10870796
    Abstract: A light-emitting polymer comprising a light-emitting repeat unit in a backbone of the polymer, wherein the polymer has an anisotropy of no more than 0.8 and wherein a transition dipole moment of the light-emitting repeat unit is aligned with the polymer backbone.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: December 22, 2020
    Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Ruth Pegington, Michael Cass, David Mohamad, Matthew Roberts, William Tarran, Martin Humphries
  • Publication number: 20200321532
    Abstract: Compound A compound of formula (I): (I) wherein R1 and R2 are each independently a linear, branched or cyclic C1-20alkyl group; and Ar1 and Ar2 are each independently an aromatic or heteroaromatic group which is unsubstituted or substituted with one or more substituents. The compound may be used in n-doping of an organic semiconductor. Such an n-doped organic semiconductor may be used in an organic electronic device, for example an electron injection layer of an organic light-emitting device.
    Type: Application
    Filed: December 20, 2018
    Publication date: October 8, 2020
    Applicant: Sumitomo Chemical Company Limited
    Inventors: Nazrul ISLAM, William TARRAN, Jean-Benoit GIGUERE
  • Publication number: 20200270290
    Abstract: A compound of formula (I): wherein M is a transition metal; x is at least 1; z is 0 or a positive integer; L1 is a ligand selected from one of ligands (II-A), (II-B); L2 is a ligand selected from another of ligands of formulae (II-A), (II-B) and (II-C); and L3 is a ligand other than a ligand of formulae (II-A), (II-B) or (II-C): (II-A) (II-B) (II-C) in which each of R1-R6 is substituent and Ar1-Ar3 are each an unsubstituted or substituted aryl or heteroaryl group. The compound of formula (I) may be used as a phosphorescent light-emitting material of an organic light-emitting device.
    Type: Application
    Filed: December 15, 2016
    Publication date: August 27, 2020
    Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Kiran Kamtekar, Natasha Conway, William Tarran
  • Publication number: 20200181145
    Abstract: A compound of formula (I): (Formula (I)) wherein Ar1, Ar2 and Ar3 independently in each occurrence is a C6-20 aryl group or a 5-20 membered heteroaryl group which is unsubstituted or substituted with one or more substituents; X1, X2 and X3 in each occurrence is independently a direct bond or a group of formula —C(R1)2— wherein R1 in each occurrence is independently H or a substituent. The compound of formula (I) may be used to form an n-dopant for doping an organic semiconductor. A film formed by such n-doping may be used in an organic electronic device, for example an electron injection layer of an organic light-emitting device.
    Type: Application
    Filed: June 14, 2018
    Publication date: June 11, 2020
    Applicant: Sumitomo Chemical Company Limited
    Inventors: William Tarran, James Lee, Nazrul Islam
  • Publication number: 20200055885
    Abstract: A metal complex of formula (I): M(L1)x(L2)y (I) wherein: M is a second or third row transition metal; L1 in each occurrence is independently a light-emitting ligand; L2 is an auxiliary ligand; x is at least 1; y is at least 1; each L1 is a group of formula (IIa) or (IIb): wherein R1-R10 are each independently H or a substituent with the proviso at least one of R3, R5 and R9 of at least one L1 is a group of formula —(Ar)p wherein Ar in each occurrence is independently an aryl or heteroaryl group that may be unsubstituted or substituted with one or more substituents, and p is at least 2.
    Type: Application
    Filed: June 24, 2016
    Publication date: February 20, 2020
    Applicants: Cambridge Display Techology Limited, Sumitomo Chemical Company Limited
    Inventors: William Tarran, Kiran Kamtekar, Ruth Pegington, Michael Cass, Matthew Roberts
  • Publication number: 20190341560
    Abstract: A light emitting device containing an anode, a cathode, and a light emitting layer provided between the anode and the cathode is described. The light emitting layer contains a metal complex represented by formula (1).
    Type: Application
    Filed: November 14, 2017
    Publication date: November 7, 2019
    Inventors: Toshiaki SASADA, Yoshiaki TSUBATA, William TARRAN, Kiran Timothy KAMTEKAR
  • Publication number: 20190221757
    Abstract: A metal complex of formula (I): M(L1)x(L2)y??(I) wherein: M is a second or third row transition metal; L1 in each occurrence is independently a light-emitting ligand; L2 is an auxiliary ligand; x is at least 1; y is at least 1; each L1 is a group of formula (IIa) or (IIb): wherein R1-R10 are each independently H or a substituent with the proviso at least one of R3, R5 and R9 of at least one L1 is a group of formula —(Ar)p wherein Ar in each occurrence is independently an aryl or heteroaryl group that may be unsubstituted or substituted with one or more substituents, and p is at least 2.
    Type: Application
    Filed: February 13, 2019
    Publication date: July 18, 2019
    Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: William Tarran, Kiran Kamtekar, Ruth Pegington, Michael Cass, Matthew Roberts
  • Publication number: 20190202850
    Abstract: A phosphorescent compound of formula (I): (Formula (I)) wherein: M is a transition metal; L in each occurrence is ON independently a mono- or poly-dentate ligand; R1 is a C4-20 alkyl comprising at least one tertiary carbon atom; R2 is a linear, branched or cyclic C1-20 alkyl group; R3 is a linear, branched or cyclic C1-20 alkyl group or a group of formula —(Ar1)p wherein Ar1 in each occurrence is an unsubstituted or substituted aryl or heteroaryl group and p is at least 1; R4 is a group of formula —(Ar2)q wherein Ar2 in is an unsubstituted or substituted aryl or heteroaryl group and q is at least 1; R5 is a substituent; w is 0 or a positive integer; x is at least 1; and y is 0 or a positive integer. The compound may be used as a blue light-emitting material in an organic light-emitting device.
    Type: Application
    Filed: April 27, 2017
    Publication date: July 4, 2019
    Applicants: Cambridge Display Technology Limited, Sumitomo Chemicla Company Limited
    Inventor: William Tarran
  • Publication number: 20190084954
    Abstract: A compound of formula (I) wherein Z is a group of formula (II) and Core is selected from groups of formula (IIIa) or (IIIb) wherein X is S or O; R1 is a substituent; n is 0 or a positive integer; Ar1 independently in each occurrence is an arylene group; R2 is a substituent; R3 is a substituent; R4 is an arylene or heteroarylene group; Y is C or Si; a is 1, 2 or 3; b is 0 or a positive integer; and c is 0 or a positive integer. The compound of formula (I) may be used as a host for a light-emitting dopant in an organic light-emitting device.
    Type: Application
    Filed: March 7, 2017
    Publication date: March 21, 2019
    Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Martin Humphries, William Tarran, Kiran Kamtekar, Philip Stackhouse, James Lee
  • Publication number: 20190058134
    Abstract: A compound of formula (I) or (III) (Formulae (I), (III)) wherein: one Y is a substituent R1 bound directly to the fluorene unit of formula (I) by an sp3-hybridised carbon atom; the other Y is an aryl or heteroaryl group Ar1 that may be unsubstituted or substituted with one or more substituents; Ar2 is an arylene or heteroarylene group; R2 is a substituent; b is 0, 1, 2, 3 or 4; c is 0, 1, 2 or 3; and X is a group of formula (II): (Formula (II)) wherein Z is O or S; R3 independently in each occurrence is a substituent; each x is independently 0, 1, 2 or 3; and * is a bond to the fluorene unit of formula (I). The compounds may be used as host materials for phosphorescent dopants in organic light-emitting devices.
    Type: Application
    Filed: February 20, 2017
    Publication date: February 21, 2019
    Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Kiran Kamtekar, William Tarran, Martin Flumphries, Florence Bourcet
  • Publication number: 20190051846
    Abstract: An organic white light-emitting device comprising an anode, a cathode and at least one light-emitting layer between the anode and the cathode, wherein a first light-emitting layer comprises a first light-emitting compound of formula (I): wherein R1, R2 and R3 independently in each occurrence is a substituent; M1 is a transition metal; L1 is a ligand other than a ligand of formula: (II) a and b are each 0 or a positive integer; x is at least 1; and y is 0 or a positive integer, a light-emitting layer of the device comprising at least one further light-emitting material.
    Type: Application
    Filed: March 9, 2017
    Publication date: February 14, 2019
    Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: William Tarran, Kiran Kamtekar
  • Publication number: 20190016739
    Abstract: A phosphorescent compound of formula (I): wherein: M is a transition metal; C1 is a carbon atom forming a metal-carbene bond with M; A is a saturated bridged bicyclic or saturated bridged tricyclic group consisting of one nitrogen atom and 6-12 carbon atoms; either: (i) X1 is a bridgehead carbon atom of the bridged bicyclic or bridged tricyclic group and X2 is NR1 wherein R1 is a substituent, or (ii) X1 is N and X2 is a bridgehead group of formula CR6 wherein R6 is H or a substituent; Ar1 is a C6-20 aromatic group or a 5-20 membered heteroaromatic group; L in each occurrence is independently a mono- or poly-dentate ligand other than a ligand of formula A-Ar1; x is at least 1; and y is 0 or a positive integer. The compound of formula (I) may be used as a blue light-emitting material in a white organic light-emitting device.
    Type: Application
    Filed: July 13, 2018
    Publication date: January 17, 2019
    Applicant: Sumitomo Chemical Company Limited
    Inventors: James Lee, Martin Humphries, William Tarran, Nazrul Islam