Visible light-driven Suzuki–Miyaura reaction by self-supported Pd nanocatalysts in the formation of Stille coupling-based photoactive microporous organic polymers. Issue 16 (17th July 2020)

• Record Type: Journal Article
• Authors: Ryu, Sang Hyun; Choi, Sung Jae; Seon, Ji Hui; Jo, Bonghyun; Lee, Sang Moon; Kim, Hae Jin; Ko, Yoon-Joo; Ko, Kyoung Chul; Ahn, Tae Kyu; Son, Seung Uk
• Is Part Of: Catalysis science & technology. Volume 10:Issue 16(2020)
• Page Start: 5535
• Page End: 5543
• Publication Date: 2020-07-17
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/d0cy00997k
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : Stille coupling results in deposition of Pd NPs on microporous organic polymers, showing excellent photocatalytic performance. Abstract : Stille coupling was applied to synthesize microporous organic polymers (MOPs). Metallic Pd was in situ self-supported during the networking of 1, 3, 6, 8-tetrabromopyrene with 1, 4-bis(tributylstannyl)benzene to form Stille coupling-based MOP (St-MOP)@Pd. The size of St-MOP particles and the amount of metallic Pd in St-MOP@Pd depended on the amount of Pd catalyst. As the amount of Pd catalyst increased, the size of St-MOP particles decreased with an increase of metallic Pd, due to the increased St-MOP nuclei in the early growth stage of St-MOP. The St-MOP bearing pyrenes showed absorption and emission of visible light and St-MOP@Pd showed excellent catalytic performance in the visible light-driven Suzuki–Miyaura coupling. The optimal St-MOP@Pd-2 (0.14 mol% Pd) showed a TON of 657 and a TOF of 219 h −1 in the visible light-driven Suzuki–Miyaura coupling of 1-acetyl-4-bromobenzene and phenylboronic acid at 25 °C. The optimal amount of St-MOP and metallic Pd in St-MOP@Pd was critical to achieve excellent catalytic performance. The overall photocatalytic principles of St-MOP@Pd were rationalized by computational simulation.