Photoluminescence: Thermally Activated Upconversion Near‐Infrared Photoluminescence from Carbon Dots Synthesized via Microwave Assisted Exfoliation (Small 50/2019). Issue 50 (13th December 2019)

• Record Type: Journal Article
• Authors: Li, Di; Liang, Chao; Ushakova, Elena V.; Sun, Minghong; Huang, Xiaodan; Zhang, Xiaoyu; Jing, Pengtao; Yoo, Seung Jo; Kim, Jin‐Gyu; Liu, Enshan; Zhang, Wei; Jing, Lihong; Xing, Guichuan; Zheng, Weitao; Tang, Zikang; Qu, Songnan; Rogach, Andrey L.
• Is Part Of: Small. Volume 15:Issue 50(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-12-13
• Subjects: carbon dots -- exfoliation -- near‐infrared absorption -- near‐infrared photoluminescence -- upconversion photoluminescence; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201970288
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract : Near‐infrared (NIR) emissive materials are highly attractive for fluorescence bio‐imaging application. In article number 1905050, Songnan Qu and co‐workers develop NIR absorbing/emissive carbon dots via microwave assisted exfoliation. More importantly, a unique thermally activated up‐conversion NIR emission is observed under 808 nm continuous‐wave laser excitation.