康振辉教授课题组在Nanoscale上发表文章

康振辉教授课题组在Nanoscale上发表文章

题目：

Lasing behavior of surface functionalized carbonquantum 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 investigateddue 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 broademission spectrum which overlapped with the absorption spectrumof the RhB dye. We investigated an approach wherein the –OH, –NH₂ and –PO₄ group functionalized CQD/RhB compositesshowed lasing behavior. The optical pumping of functionalizedCQD/RhB composites exhibited lasing emission which is dynamicallytunable as a function of the surface properties of CQDs at thelaser wavelength of 532 nm by varying the pump energy. The PO₄-CQD/RhB composites showed a typical lasing emission with a linewidthof 3.2 nm at 587 nm at 1.86 mJ pump energy. We alsodemonstrated that the pH value of CQD solution played a key roleon 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