光谱学与光谱分析 |
|
|
|
|
|
Raman Enhancement of a Dipolar Molecule on CVD Graphene |
LENG Yan-dan1, 2, ZHOU Jun-qi1*, ZHANG Hong-chao1, HUANG Chang-shui2* |
1. Taiyuan University of Science and Technology, Taiyuan 030024, China 2. Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China |
|
|
Abstract The CVD graphene was chosen as the Raman enhancement substrate, graphene-enhanced Raman scattering(GERS) of dipolar molecule DREP were explored with a laser wavelength λ=532 nm of micro-Raman spectroscopy. Upon comparison of the raman signal of DREP molecular latched to a graphene /SiO2 substrate and to a bare SiO2 substrate, we found that the Raman signal of pure DREP molecule basically does not exist at low concentrations, until it reaches a certain concentration of 1×10-5mol·L-1, its Raman signal emerging and as the increasing of the concentration, Raman signal and fluorescence signal all increase. However, the raman signal of DREP molecular on the grapheme occur at the concentration of 1×10-7mol·L-1 and as the increasing of concentration, the raman signal increasing quickly but the fluorescence signal is not obvious. The studies were shown that graphene can achieve the Raman signal of DREP molecule enhancement, and can quench fluorescent backing off, increase the ratio of Raman signal and fluorescence signals. Comparing the GERS of DREP and DR1P molecules with different molecular dipole moment, indicating that the greater the dipole moment, the greater the enhancement factor, the degree of enhancement is stronger. Finally, we analyze the mechanism of Raman enhancement about DREP molecule on the grapheme. The dipole molecular is a pyrene terminal tethered a azobenzene molecular that was modified. There will happen the electron transfer of the pyrene terminal on the graphene interface through π—π interactions, changing the energy level of grapheme and leading to a p-doping. The mechanism of Raman enhancement are chemical mechanisms. The study of GERS of DREP molecular can help the comprehension of grapheme and the mechanism of grapheme enhanced raman scattering, for example the transfer of grapheme electron, the theory of chemical enhancement mechanism and how to separate the chemical enhancement mechanism from electromagnetic enhancement mechanism.
|
Received: 2014-08-14
Accepted: 2014-11-28
|
|
Corresponding Authors:
ZHOU Jun-qi, HUANG Chang-shui
E-mail: lengyandan_2008@163.com
|
|
[1] MA Jing(马 靖). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2014, 34(7): 1865. [2] FAN Yu-xia, LAI Ke-qiang, HUANG Yi-qun(樊玉霞,赖克强,黄轶群). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2014,34(7): 1859. [3] Avci E, Culha M. Appl. Spectrosc., 2014,68(8): 890. [4] Otto A, Mrozek I, Grabhorn H, et al. J. Phys. Condensed Matter., 1992. 4(5): 1143. [5] Novoselov K S, Geim A K, Morozov S V, et al. Science, 2004, 306(5696): 666. [6] Marcano D C, Kosynkin D V, Berlin J M, et al. ACS Nano, 2010, 4(8): 4806. [7] Khan U, Porwal H, Nawaz K, et al. Langmuir, 2011, 27(15): 9077. [8] Wang C C, Chen W, Han C, et al. Sci. Rep., 2014, 4. [9] Ling X, Zhang J. Small, 2010, 6(18): 2020. [10] Johnson P S, Huang C S, Kim M, et al. Langmuir, 2014, 30(9): 2559. [11] Huang C S, Kim M, Safron N S, et al. J. Phys. Chem. C, 2014. 118(4): 2077. [12] Li X S, Zhu Y W, Cai W W, et al. Nano Lett., 2009, 9(12): 4359. [13] WU Juan-xia, XU Hua, ZHANG Jin(吴娟霞,徐 华,张 锦). Acta Chimica Sinica(化学学报),2014,72: 301. [14] Kim M, Safron N S, Huang C S, et al. Nano Lett., 2012, 12(1): 182. |
[1] |
ZHANG Liang1, ZHANG Ran2, CUI Li-li3, LI Tao1, GU Da-yong4, HE Jian-an2*, ZHANG Si-xiang1*. Rapid Modification of Surface Plasmon Resonance Sensor Chip by
Graphene Oxide[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(03): 795-800. |
[2] |
ZHANG Li-sheng. Photocatalytic Properties Based on Graphene Substrate[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(04): 1058-1063. |
[3] |
LIU Su-ya-la-tu, WANG Zong-li, PANG Hui-zhong, TIAN Hu-qiang, WANG Xin *, WANG Jun-lin*. Terahertz Broadband Tunable Metamaterial Absorber Based on Graphene and Vanadium Dioxide[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(04): 1257-1263. |
[4] |
LONG Jie, LI Jiu-sheng*. Terahertz Phase Shifter Based on Grating-Liquid Crystal Hybrid Structure[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(09): 2717-2722. |
[5] |
SUN Ning, CHEN Jun-fan, ZHANG Jie*, ZHU Yong. The Forming Mechanism of Surface Morphology of Nanostructures and Its Effect on Graphene Raman Spectra[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(06): 1821-1827. |
[6] |
WANG Xiao-yu1, CUI Yong-zhao1, BI Wei-hong1,2*, FU Guang-wei1, KE Si-cheng1, WANG Wen-xin1. Research on Control Method of Graphene Layers Grown in Air Holes of Photonic Crystal Fiber Based on Raman Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(12): 3659-3664. |
[7] |
ZHANG Qiu-lan, ZHU Zhi, WEN Zi-jian, NI Yong-nian. Interaction Between Graphene Quantum Dots and Trypsin With Spectroscopic and Chemometrics Approaches[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(10): 3141-3146. |
[8] |
JI Bang1,2, ZHAO Wen-feng3, DUAN Jie-li4, FU Lan-hui1, MA Li-zhe3, YANG Zhou1*. Spectral Characteristics of Ag3PO4/GO on Nickel Foam and Photocatalytic Degradation of Ethylene Under Visible Light[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(09): 2743-2750. |
[9] |
ZHANG Jia-qin1, FANG Zhi-hao2, LIANG Hui-e1*. Preparation and Spectral Analysis of Modern Anti-Ultraviolet Cotton Fabrics[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(09): 2770-2774. |
[10] |
XING Hao-jian, YIN Zeng-he, ZHANG Jie*, ZHU Yong. Theoretical Analysis and Experiment of Raman Enhancement of Graphene-Ordered Silver Nanopores[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(08): 2339-2344. |
[11] |
WEI Gang1, GU Zheng-ye1, GONG Shui-shui1, GUANG Shan-yi2, KE Fu-you1, XU Hong-yao1*. Determination of the Oxidizability on the Surface of the Graphene Oxide Layer by Infrared Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(06): 1722-1727. |
[12] |
LI Zhi-yuan1, LIU Xue-lian1,2, ZHENG An-dong1, WANG Guo-dong1, XIA Guo1,3, LU Hong-bo1,2*. Research on the Spectral Analysis and Stability of Ultraviolet-Enhanced Thin Films with Stable and Tunable Graphene Oxide-Rare Earth Complexes[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(02): 379-384. |
[13] |
YIN Zeng-he, ZHU Yong*, ZHANG Jing, ZHANG Xiao-lei, ZHANG Jie. Enhanced Raman Experiments of Graphene-Ag Nanoparticles Prepared with Annealing Method[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(02): 477-484. |
[14] |
GONG Tian-cheng1,2, ZHU Yong1*, WANG Xin-yu1,3, WANG Ning1, ZHANG Jie1. Research on Preparation Process Optimization and Surface Enhanced Raman Spectroscopy (SERS) of Graphene-Silver Nanoparticle Composites[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(11): 3321-3327. |
[15] |
LIN Xi1, LU Yi-song2, YANG Sheng-yuan1*, LIU Lu-qun1, LI Fei-fei1, HE Shun-zhen1. Visual Colorimetric Detection of Hg(Ⅱ) with Graphene Oxide Peroxidase-Like Activity[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(10): 3188-3191. |
|
|
|
|