1-bromocarbazole derivatives, room temperature phosphorescent materials, and preparation method and application thereof
By using 1-bromocarbazole derivatives as dopant guest materials, room-temperature phosphorescent materials with long phosphorescence lifetime and high quantum yield were prepared, solving the problems of short lifetime and low quantum yield of existing phosphorescent materials. These materials can be applied to photoluminescent devices, chemical sensing, bioimaging, and information anti-counterfeiting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN UNIV
- Filing Date
- 2023-10-20
- Publication Date
- 2026-07-14
AI Technical Summary
Existing room-temperature phosphorescent materials prepared by doping guest exhibit low phosphorescence quantum yield and phosphorescence lifetime, simple molecular structure, and unclear structure-activity relationship.
Amorphous thin film materials were prepared by using 1-bromocarbazole derivatives as dopant guests in room temperature phosphorescent materials. Through interaction with the host material, nonradiative transitions of molecules were suppressed and radiative transitions from triplet to ground state were promoted. Combined with annealing treatment, amorphous thin film materials were prepared.
The phosphorescence lifetime of room temperature phosphorescent materials has been increased to 1.65 seconds, and the phosphorescence quantum yield has reached 12.2%. Different emission colors and luminescence intensities can be achieved by controlling the substituent groups. It is suitable for photoluminescent devices, chemical sensing, bioimaging, and data encryption and information anti-counterfeiting.
Smart Images
Figure CN117645565B_ABST