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Download Hi-Res ImageDownload to MS-PowerPointCite This:J. Phys. Chem. Lett. 2013, 4, 17, 2919-2925
RETURN TO ISSUEPREVPhysical Processes i...Physical Processes in Nanomaterials and Nanostructures

Photoinduced Charge Separation and Recombination Processes in CdSe Quantum Dot and Graphene Oxide Composites with Methylene Blue as Linker

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† State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 3888 Eastern South Lake Road, Changchun 130033, China
‡ University of Chinese Academy of Sciences, Beijing 100039, China
§ Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan
∥ Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, China
* (J.Z.) Phone: +86-431-86176313; e-mail: [email protected]. (Y.M.) Phone: +81-298-534248; e-mail: [email protected]
Cite this: J. Phys. Chem. Lett. 2013, 4, 17, 2919–2925
Publication Date (Web):August 13, 2013
https://doi.org/10.1021/jz401460j
Copyright © 2013 American Chemical Society
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Abstract

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The charge separation and recombination processes between CdSe quantum dot (QD) and graphene oxide (GO) composites with linking molecule methylene blue (MB+) were studied by femtosecond transient absorption spectroscopy. Anchoring MB+ molecules on GO results in significant changes in steady-state and transient absorption spectra, where the exciton dissociation time in the CdSe QD-MB+-GO composite was determined to be 1.8 ps. Surprisingly, the ground state bleaching signal increased for MB+-GO complex was found to be 5.2 ps, in relation with electron transfer from QD to GO. On the other hand, the strong electronic coupling between MB•-GO radical and GO prolonged charge recombination process (≥5 ns) in QD-MB+-GO composites. Charge separation and recombination processes at the interface between semiconductor QDs and graphene can thus be modulated by the functionalized dye molecules.

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Supporting Information

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Experimental methods; photo images of MB+ and MB+-GO before and after filtration in water; absorption, PL and FTIR spectra of MB+ and MB+-GO; TEM images of CdSe QD with and without MB+, and CdSe QD-GO complex; TA spectrum of QD-MB+-GO; absorption, PL spectra, TA kinetic trace and PL decay of QD-GO; TA kinetic trace of QD-MB+-GO probed at 583 nm; simulated TA kinetic trace of QD-MB+-GO with fast rise time (1.8 ps). This material is available free of charge via the Internet http://pubs.acs.org.

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Cited By

This article is cited by 11 publications.

  1. Hui Wei, Shengnan Ni, Chaomin Cao, Guangfu Yang, Guozhen Liu. Graphene Oxide Signal Reporter Based Multifunctional Immunosensing Platform for Amperometric Profiling of Multiple Cytokines in Serum. ACS Sensors 2018, 3 (8) , 1553-1561. https://doi.org/10.1021/acssensors.8b00365
  2. Pengtao Jing, Wenyu Ji, Xi Yuan, Songnan Qu, Renguo Xie, Michio Ikezawa, Jialong Zhao, Haibo Li, and Yasuaki Masumoto . Ultrafast Carrier Dynamics and Hot Electron Extraction in Tetrapod-Shaped CdSe Nanocrystals. ACS Applied Materials & Interfaces 2015, 7 (15) , 7938-7944. https://doi.org/10.1021/am5091148
  3. Yitong Dong and Dong Hee Son . Strongly Nonlinear Dependence of Energy Transfer Rate on sp2 Carbon Content in Reduced Graphene Oxide-Quantum Dot Hybrid Structures. The Journal of Physical Chemistry Letters 2015, 6 (1) , 44-47. https://doi.org/10.1021/jz502414y
  4. Shengnan Ni, Zhuping Shen, Pengfei Zhang, Guozhen Liu. Enhanced performance of an electrochemical aptasensor for real-time detection of vascular endothelial growth factor (VEGF) by nanofabrication and ratiometric measurement. Analytica Chimica Acta 2020, 1121 , 74-82. https://doi.org/10.1016/j.aca.2020.05.003
  5. Shengnan Ni, Laicong Qiao, Zhuping Shen, Yifei Gao, Guozhen Liu. Physical absorption vs covalent binding of graphene oxide on glassy carbon electrode towards a robust aptasensor for ratiometric electrochemical detection of vascular endothelial growth factor (VEGF) in serum. Electrochimica Acta 2020, 331 , 135321. https://doi.org/10.1016/j.electacta.2019.135321
  6. Soma Das, Avisek Dutta, Rajesh Bera, Amitava Patra. Ultrafast carrier dynamics in 2D–2D hybrid structures of functionalized GO and CdSe nanoplatelets. Physical Chemistry Chemical Physics 2019, 21 (28) , 15568-15575. https://doi.org/10.1039/C9CP02823D
  7. Chenbo Dong, Reem Eldawud, Alixandra Wagner, Cerasela Zoica Dinu. Hybrid nanocomposites with enhanced visible light photocatalytic ability for next generation of clean energy systems. Applied Catalysis A: General 2016, 524 , 77-84. https://doi.org/10.1016/j.apcata.2016.06.009
  8. Huashan Li, David A. Strubbe, Jeffrey C. Grossman. Functionalized Graphene Superlattice as a Single-Sheet Solar Cell. Advanced Functional Materials 2015, 25 (32) , 5199-5205. https://doi.org/10.1002/adfm.201501906
  9. Saijie Song, Yufei Ma, He Shen, Mengxin Zhang, Zhijun Zhang. Removal and recycling of ppm levels of methylene blue from an aqueous solution with graphene oxide. RSC Advances 2015, 5 (35) , 27922-27932. https://doi.org/10.1039/C4RA16982D
  10. Jianhui Sun, Dehua Zhu, Jialong Zhao, Michio Ikezawa, Xiuying Wang, Yasuaki Masumoto. Ultrafast carrier dynamics in CuInS 2 quantum dots. Applied Physics Letters 2014, 104 (2) , 023118. https://doi.org/10.1063/1.4862274
  11. Zhimin Wang, Cuilian Xu, Guangqin Gao, Xin Li. Facile synthesis of well-dispersed Pd–graphene nanohybrids and their catalytic properties in 4-nitrophenol reduction. RSC Advances 2014, 4 (26) , 13644. https://doi.org/10.1039/c3ra47721e

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