Photo-Stimulated Polychromatic Room Temperature Phosphorescence of Carbon Dots

doi:10.1002/smll.202001909

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Photo-Stimulated Polychromatic Room Temperature Phosphorescence of Carbon Dots
	Jiang, Kai; Hu, Sizhe; Wang, Yuci; Li, Zhongjun; Lin, Hengwei
刊名	SMALL
	2020
卷号	16 期号:31
关键词	GRAPHENE QUANTUM DOTS ORGANIC PHOSPHORESCENCE MOLECULAR DESIGN LONG-WAVELENGTH SCALE SYNTHESIS MODE EMISSION POLYMER DOTS MULTICOLOR FLUORESCENCE MECHANISM
DOI	10.1002/smll.202001909
英文摘要	Single-component multicolor luminescence, particularly phosphorescence materials are highly attractive both in numerous applications and in-depth understanding the light-emission processes, but formidable challenges still exist for preparing such materials. Herein, a very facile approach is reported to synthesize carbon dots (CDs) (named MP-CDs) that exhibit multicolor fluorescence (FL), and more remarkably, multicolor long-lived room temperature phosphorescence (RTP) under ambient conditions. The FL and RTP colors of the CDs powder are observed to change from blue to green and cyan to yellow, respectively, with the excitation wavelength shifting from 254 to 420 nm. Further studies demonstrate that the multicolor emissions can be attributed to the existence of multiple emitting centers in the CDs and the relatively higher reaction temperature plays a critical role for achieving RTP. Given the unique optical properties, a preliminary application of MP-CDs in advanced anti-counterfeiting is presented. This study not only proposes a strategy to prepare photo-stimulated multicolor RTP materials, but also reveals great potentials of CDs in exploiting novel optical materials with unique properties.
学科主题	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20695]
专题	2020专题
作者单位	Lin, HW (corresponding author), Jiangnan Univ, Int Joint Res Ctr Photo Respons Mol & Mat, Sch Chem & Mat Engn, Wuxi 214122, Jiangsu, Peoples R China.
推荐引用方式 GB/T 7714	Jiang, Kai,Hu, Sizhe,Wang, Yuci,et al. Photo-Stimulated Polychromatic Room Temperature Phosphorescence of Carbon Dots[J]. SMALL,2020,16(31).
APA	Jiang, Kai,Hu, Sizhe,Wang, Yuci,Li, Zhongjun,&Lin, Hengwei.(2020).Photo-Stimulated Polychromatic Room Temperature Phosphorescence of Carbon Dots.SMALL,16(31).
MLA	Jiang, Kai,et al."Photo-Stimulated Polychromatic Room Temperature Phosphorescence of Carbon Dots".SMALL 16.31(2020).