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Synthesis of 3-[4-(Pyridin-2-yl)phenyl]-9-(4-fluorophenyl)-9H-carbazole

Xi‐Cun Gao

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Abstract

4-(Pyridin-2-yl)phenylboronic acid was synthesized by diazotization,the Gomberg-Bachmann coupling,boronic acidification reactions from 4-bromoaniline.Then,the phosphorescent ligand was synthesized by the Suzuki coupling reaction of 4-(pyridin-2-yl)phenylboronic acid with carbazole substituted by 4-fluorophenyl group using Tetrakis(triphenylphosphine)palladium as catalyst at 90 ℃ with a yield of 82.03%.It was characterized by 1HNMR and EA,and its UV-vis absorption and PL emission spectrum was tested.The results of spectrum show that the max absorbance played a red shift of 56 nm,the Stokes shift of 154 nm,and its intensity enhanced as the effect of carbazolyl group.

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What this paper is about

4-(Pyridin-2-yl)phenylboronic acid was synthesized by diazotization,the Gomberg-Bachmann coupling,boronic acidification reactions from 4-bromoaniline.Then,the phosphorescent ligand was synthesized by the Suzuki coupling reaction of 4-(pyridin-2-yl)phenylboronic acid with carbazole substituted by 4-fluorophenyl group using Tetrakis(triphenylphosphine)palladium as catalyst at 90 ℃ with a yield of 82.03%.It was characterized by 1HNMR and EA,and its UV-vis absorption and PL emission spectrum was tested.The results of spectrum show that the max absorbance played a red shift of 56 nm,the Stokes shift of 154 nm,and its intensity enhanced as the effect of carbazolyl group.

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Available abstract

4-(Pyridin-2-yl)phenylboronic acid was synthesized by diazotization,the Gomberg-Bachmann coupling,boronic acidification reactions from 4-bromoaniline.Then,the phosphorescent ligand was synthesized by the Suzuki coupling reaction of 4-(pyridin-2-yl)phenylboronic acid with carbazole substituted by 4-fluorophenyl group using Tetrakis(triphenylphosphine)palladium as catalyst at 90 ℃ with a yield of 82.03%.It was characterized by 1HNMR and EA,and its UV-vis absorption and PL emission spectrum was tested.The results of spectrum show that the max absorbance played a red shift of 56 nm,the Stokes shift of 154 nm,and its intensity enhanced as the effect of carbazolyl group.

Key concepts: Phenylboronic acid, Carbazole, Chemistry, Triphenylphosphine, Suzuki reaction, Phosphorescence, Palladium, Yield (engineering)

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Synthesis of 3-[4-(Pyridin-2-yl)phenyl]-9-(4-fluorophenyl)-9H-carbazole — Research Paper | ScholarLens