公开(公告)号：US20210269664A1

公开(公告)日：2021-09-02

申请号：US17173268

申请日：2021-02-11

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Chong Min KOO ,  In Sik IN ,  Tae Yun KO ,  Daesin KIM ,  Se Hyun DOO ,  Seon Joon KIM ,  Soon Man HONG ,  Seung Sang HWANG ,  Kyung Youl BAEK ,  Albert LEE ,  Sangho CHO

IPC: C09D11/52 ,  C09D11/037 ,  C09D11/033 ,  C07F7/28 ,  C07F11/00 ,  C07F9/00 ,  H01B1/20

Abstract: The present disclosure relates to 2-dimensional MXenes surface-modified with catechol derivatives, a method for preparing the same, MXene organic ink including the same, and use thereof (e.g. flexible electrodes, conducive cohesive/adhesive materials, electromagnetic wave-shielding materials, flexible heaters, sensors, energy storage devices). Particularly, the simple, fast, and scalable surface-functionalization process of MXenes using catechol derivatives (e.g. ADOPA) organic ligands significantly improves the dispersion stability in various organic solvents (including ethanol, isopropyl alcohol, acetone and acetonitrile) and produces highly concentrated organic liquid crystals of various MXenes (including Ti2CTx, Nb2CTx, V2CTx, Mo2CTx, Ti3C2Tx, Ti3CNTx, Mo2TiC2Tx, and Mo2Ti2C3Tx). Such products offer excellent electrical conductivity, improved oxidation stability, excellent coating and adhesion abilities to various hydrophobic substrates, and composite processability with hydrophobic polymers. This finding will lead to further studies on the structures, properties, and physics of the organic MXene liquid crystals and their practical applications.

公开(公告)号：US20240417581A1

公开(公告)日：2024-12-19

申请号：US18408448

申请日：2024-01-09

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seon Joon KIM ,  Seung Sang HWANG ,  Albert LEE ,  Taegon OH ,  Tae Yun KO ,  Junpyo HONG

IPC: C09D11/52 ,  C01B32/907 ,  C09D11/033 ,  C09D11/037 ,  H05K9/00

Abstract: Disclosed in the present specification are a two-dimensional MXene surface-modified with a metal-organic network, a method of preparing the same, a MXene organic ink containing the same, and uses (e.g., an electromagnetic wave shielding material). In one aspect, the two-dimensional MXene surface-modified with a metal-organic network according to the present invention can use various organic ligands by linking the surface with the organic through the metal, and can be stably dispersed in various organic solvents, especially in industrial non-polar organic solvents as well as polar organic solvents, thereby being applied to a more general-purpose technologies, and securing stability against chemical oxidation to improve long-term stability.

公开(公告)号：US20230137881A1

公开(公告)日：2023-05-04

申请号：US17696877

申请日：2022-03-17

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： Chong Min KOO ,  Tae Yun KO ,  Jae Eun YOON ,  Soon Man HONG ,  Seon Joon KIM ,  Seung Sang HWANG ,  Albert Lee ,  Myung Ki KIM ,  Chang Hoon PARK ,  Ji Sung KWON

IPC: G02B1/116 ,  G02B5/22

Abstract: The present disclosure relates to a visible and infrared stealth element. The element of the present disclosure may selectively control thermal radiation energy according to a wavelength, and may also control a surface color and reflectance of near-infrared light and short-wavelength infrared light.