Photo-activated Carbon dots (CDs) as Catalysts in the Knoevenagel Condensation: A Mechanistic Study by Dual-Mode Monitoring via ESI-MS

被引：1

作者：

Cosentino, Francesca ^{[1
]}

Michenzi, Cinzia ^{[2
]}

Di Noi, Alessia ^{[1
]}

Salvitti, Chiara ^{[1
]}

Pepi, Federico ^{[1
]}

de Petris, Giulia ^{[1
]}

Chiarotto, Isabella ^{[2
]}

Troiani, Anna ^{[1
]}

机构：

[1] Sapienza Univ Rome, Dept Chem & Technol Drugs, Ple Aldo Moro 5, I-00185 Rome, Italy

[2] Sapienza Univ Rome, Dept Basic & Appl Sci Engn, Via Castro Laurenziano 7, I-00161 Rome, Italy

来源：

CHEMPLUSCHEM | 2024年 / 89卷 / 08期

关键词：

carbon dots; Knoevenagel condensation; superoxide radical anion; photochemistry; electrospray ionization mass spectrometry; IONIZATION MASS-SPECTROMETRY; QUANTUM DOTS; CONJUGATED POLYMER; ROOM-TEMPERATURE; ONE-POT; EFFICIENT; GREEN; ANION;

D O I：

10.1002/cplu.202400174

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Carbon dots (CDs) obtained from 5-(hydroxymethyl)furfural (5-HMF) were activated by a 365 nm-UV irradiation source and employed in the Knoevenagel condensation to investigate their photocatalytic mechanism. To this end, electrospray ionization mass spectrometry (ESI-MS) was used to monitor the time progress of the condensation and follow the formation of the final product in positive and negative ion modes at once. The intervention of the superoxide radical anion in the photocatalytic mechanism of CDs was highlighted. The Knoevenagel condensation photocatalyzed by carbon dots (CDs) was dual mode-mode monitored by electrospray ionization mass spectrometry (ESI-MS). The photocatalytic mechanism of CDs was discussed highlighting the key role of superoxide anion in driving the formation of the reaction products. image

引用

页数：9