Luminous composite ultrathin films of CdTe quantum dots/silk fibroin co-assembled with layered doubled hydroxide:Enhanced photoluminescence and biosensor application

作     者：Muhammad Sohail Haroone Ling Li Aftab Ahmad Yaping Huang Ruili Ma Ping Zhang Yuehua Hu Qari Muhammad Kaleem Jun Lu 

作者机构：State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical TechnologyBeijing100029China CAS Key Laboratory of Pathogenic Microbiology and ImmunologyInstitute of MicrobiologyChinese Academy of SciencesBeijing100101China Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyP.Box 98Beisanhuan East Road 15Beijing100029China 

出 版 物：《Journal of Materiomics》 (无机材料学学报（英文）)

年 卷 期：2018年第4卷第2期

页      面：165-171页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：This work was supported by the 973 Program(Grant2014CB932101) the National Natural Science Foundation of China,111 Project(Grant no.B07004) Innovation Research Team in University and Central University Research Funds of China(buctrc201527) 

主　　题：CdTe quantum dots Silk fibroin Layered doubled hydroxide Co-assembly Fluorescence enhancement 

摘      要：Quantum dots(QDs)luminescent films are extensively applied to optoelectronics and optical ***,QDs aggregation results in the quenching of their fluorescence property which limits their practical applications to a greater *** order to resolve this issue,3-mercaptopropionic acid(3-MPA)functionalized Cadmium Tellurium(CdTe)QDs were stabilized by silk fibroin(SB)and coassembled with layered doubled hydroxide(LDH)to form(QDs@SF/LDH)_(n)ultrathin films(UTFs)via the layer-by-layer(LBL)***-Vis absorption and fluorescence spectroscopy showed a stepwise and normal growth of the films upon increasing the number of deposition *** and AFM studies confirmed the formation of a periodic layered structure and regular surface morphology of the thin *** compared to(CdTe QDs/LDH)_(n)UTFs,the(CdTe QDs@SF/LDH)_(n)UTFs displayed fluorescence enhancement and longer fluorescent lifetime,both in solid states and aqueous *** compared with the solution state,the fluorescence enhancement of SF-RC and SF-β are,respectively,7 times and 17 times in the(CdTe QDs@SF/LDH)_(n)UTFs,indicating that the LDH nanosheets favor the fluorescence enhancement effect on the CdTe QDs@*** fabricated materials displayed fluorescence response to a biological molecule such as immune globulin,***,the(CdTe QDs@SF/LDH)_(n)UTFs has a potential to be used as biosensor.