题目：

Lasing Behavior of Surface Functionalized Carbon Quantum Dot/RhB Composites

作者：

Ashish Yadav,‡^a Liang Bai,‡^a Yanmei Yang,^a Juan Liu,^a Ajeet Kaushik,^b Gary J. Cheng,^c,d Lin Jiang,*^a Lifeng Chi*^a and Zhenhui Kang*^a

单位：

^aJiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, China.

^bCenter for Personalized Nanomedicine, Institute of Neuro Immune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199 USA

^cSchool of Industrial Engineering, Purdue University, 315 N. Grant St, West Lafayette, IN 47907, USA

^dBirck Nanotechnology Center, Purdue University, 1205 W State St, West Lafayette, IN 47907, USA

摘要：

Random lasers have been extensively and intensively investigated due to their fundamental importance and promising applications. Here, we explored the lasing behavior of carbon quantum dot (CQD)/Rhodamine B (RhB) composites. CQDs exhibited a broad emission spectrum which overlapped with the absorption spectrum of the RhB dye. We investigated an approach wherein the �OH, �NH₂ and �PO₄ group functionalized CQD/RhB composites showed lasing behavior. The optical pumping of functionalized CQD/RhB composites exhibited lasing emission which is dynamically tunable as a function of the surface properties of CQDs at the laser wavelength of 532 nm by varying the pump energy. The PO₄-CQD/RhB composites showed a typical lasing emission with a linewidth of 3.2 nm at 587 nm at 1.86 mJ pump energy. We also demonstrated that the pH value of CQD solution played a key role on the lasing behavior of CQD/composites.

影响因子：

7.76

分区情况：

1区

链接： 

http://pubs.rsc.org/en/content/articlelanding/2017/nr/c7nr01260h#!divAbstract

责任编辑：向丹婷 联系方式：dtxiang@suda.edu.cn