A kind of ionic iridium complex containing imidazolium salt and its preparation and application
An iridium complex and imidazolium-containing technology is applied in the field of preparation of novel imidazolium salt ionic iridium complexes, which can solve the problems of narrow emission range and high driving voltage, and achieve the effect of broadening the research field.
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Embodiment 1
[0032] Synthesis of 3-bromocarbazole:
[0033]
[0034] First, weigh the carbazole (16.7g, 100.0mmol) and place it in a 250mL single-neck flask A connected to a constant pressure dropping funnel, vacuum and fill with nitrogen for three cycles, then add 50mL DMF to dissolve, and place the single-neck flask A in an ice-salt bath (Volume ratio ice: brine saturated solution=10:1, temperature is about -10℃), after sufficient cooling, the DMF solution of NBS (17.7g, 100.0mmol) is slowly added dropwise to the carbazole solution through a constant pressure dropping funnel in. During the dropping process, stir the ice-salt bath appropriately to keep the temperature low. The device is left still and reacts for 18-24h. After the reaction is completed, it is poured into a large amount of water to settle, and the solid is collected after filtration, and recrystallized from ethanol. (Heat the solid and a small amount of ethanol to boiling. If there is still a large amount of solid, continue...
Embodiment 2
[0062] In Example 2, the synthesized complex was dissolved in acetonitrile to form 10 -4 M solution, take two milliliters of this solution in a cuvette, add platinum electrodes on both ends of the cuvette and connect wires, and apply 4V voltage. It can be seen that the color of the complex changes from orange to green under the excitation of 365nm ultraviolet light. And red change (the cathode becomes green and the anode becomes red). figure 2 , The emission spectrum such as image 3 .
Embodiment 3
[0063] In Example 3, a single-layer flexible information recording and storage device was fabricated. The synthesized complex is dissolved in an appropriate amount of ionic liquid 1-butyl-3-methylimidazole hexafluorophosphate, and then mixed with 200-300 mesh silica gel to form a quasi-solid. This quasi-solid is spin-coated on the flexible ITO / PET electrode, and the wire is connected to this pole as the anode, and the cathode is connected to the conductive needle to make a movable "stylus pen". Use the "stylus pen" to write on the film under 3V voltage. IAM" can see the green words quickly appear, which can realize the recording and reading of information, and the effect is like Figure 4 .
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