银纳米颗粒对纳米金刚石的拉曼及荧光增强特性研究

刘丽双; 丑修建; 陈涛; 孙立宁

doi:10.7498/aps.65.197301

摘要

纳米金刚石因其优异的光学特性成为当今纳米科学研究中的一个热点.利用等离激元效应提高nitrogen-vacancy（NV）色心的荧光和拉曼散射强度，进而可以提高这类传感器的灵敏度.本文主要将纳米金刚石与Ag纳米颗粒结合，利用金属纳米颗粒表面的等离子体共振效应，使NV色心的荧光和拉曼强度得到增强.同时研究了Ag纳米颗粒的质量浓度对拉曼与荧光光谱强度的影响，并进一步研究了相应的荧光辐射跃迁速率与量子效率，对荧光的增强机制进行了探究.

关键词:

Abstract

The nano-diamond has been a hot topic in the field of nano-science and nanotechnology for its optical properties. Much effort has been devoted to improving the fluorescence and Raman scattering intensity of nitrogen-vacancy (NV) center in nano-diamond by using plasmon resonance effect in sensing area. A combination of Ag nanoparticle and diamond can not only take advantage of the stability and biocompatibility of diamond, but also enhance the local electric field around NV center through the Ag nanoparticles, thereby speeding up the radiation of the fluorescent near the surface of the substrate, improving the strength and stability of the fluorescence, and greatly broadening the application areas of Raman spectroscopy. In this paper, we mix the nano-diamonds with Ag nanoparticles to improve the fluorescence and Raman scattering intensity on the basis of the localized surface plasmon resonance effect. The influences of Ag mass concentration on the Raman spectrum and fluorescence intensity are investigated. The results show that when the concentration of nano-Ag nanoparticles reaches up to 5 wt%, the light intensity becomes saturated, but the concentration further increases up to a value more than 7 wt% the light intensity begins to decline. Then the corresponding radiative transition rate and the fluorescence quantum efficiency are investigated, and based on these researches, influences and mechanism of surface plasmon resonance (SPR) enhancement are discussed thoroughly. We deduced that the fluorescence enhancement is mainly due to the enhanced surface plasmon field caused by transfer of surface plasmon resonance energy and the energy transfer between surface plasmon and excited state of NV centers. When the concentration of Ag nanoparticles reaches an appropriate value, a suitable distance between metal nanoparticles and diamond is obtained, thereby ensuring the strong local electric field forming on the metal surface, accelerating the emitting photons of diamond in the excited state, and also suppressing the transfer of non-radiative energy, eventually leading to the increase of diamond fluorescence emission intensity.

Keywords:

作者及机构信息

1.
苏州大学, 苏州大学机电工程学院, 先进机器人江苏省重点实验室, 苏州纳米科技协同创新中心, 苏州 215123

通信作者: 丑修建, chouxiujian@163.com

基金项目: 中国博士后科学基金（批准号：11174237，10974161）和江苏省博士后科研资助计划项目（批准号：1201038C）资助的课题.

Authors and contacts

1.
College of Mechanical and Electrical Engineering and Jiangsu Provincial Key Labratory of Advanced Robotics and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China

Corresponding author: Chou Xiu-Jian, chouxiujian@163.com

Funds: Project supported by the China Postdoctoral Science Foundation (Grant Nos. 11174237, 10974161), and Jiangsu Planned Projects for Postdoctoral Research Funds, China (Grant No. 1201038C).

参考文献

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[14]	Lordan F, Damm S, Kennedy E, Mallon C, Forster R J, Keyes T E, Rice J H 2013 Plasmonics 8 1567
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[16]	Lin T, Yu G, Wee A, Shen Z, Loh K P 2000 Appl. Phys. Lett. 77 2692
[17]	Le Ru E, Blackie E, Meyer M, Etchegoin P G 2007 J. Phys. Chem. C 111 13794
[18]	Tang J, Guo H, Chen M, Yang J, Tsoukalas D, Zhang B, Liu J, Xue C, Zhang W 2015 Sensor. Actuat. B: Chem. 218 145
[19]	Pons T, Medintz I L, Sapsford K E, Higashiya S, Grimes A F, English D S, Mattoussi H 2007 Nano Lett. 7 3157
[20]	Shi Y, Guo H, Yang J, Zhao M, Liu J, Xue C, Tang J 2015 Materials 8 3806
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[26]	Ito Y, Matsuda K, Kanemitsu Y 2007 Phys. Rev. B 75 033309

施引文献

[1]	Perevedentseva E, Karmenyan A, Chung P H, Cheng C L 2005 J. Vac. Sci. Technol. B 23 1980
[2]	Babinec T M, Hausmann B J, Khan M, Zhang Y, Maze J R, Hemmer P R, Loncčar M 2010 Nat. Nanotechnol. 5 195
[3]	Tanabe I, Tatsuma T 2012 Nano Lett. 12 5418
[4]	Schmidt J P, Cross S E, Buratto S K 2004 J. Chem. Phys. 121 10657
[5]	Wang F, Shen Y R 2006 Phys. Rev. Lett. 97 206806
[6]	Santoro G, Yu S, Schwartzkopf M, Zhang P, Koyiloth Vayalil S, Risch J F H, Rbhausen M A, Hernández M, Domingo C, Roth S V 2014 Appl. Phys. Lett. 104 243107
[7]	Liu F X, Cao Z S, Tang C J, Chen L, Wang Z L 2010 Acs Nano 4 2643
[8]	Kneipp J, Kneipp H, Kneipp K 2008 Chem. Soc. Rev. 37 1052
[9]	Erol M, Han Y, Stanley S K, Stafford C M, Du H, Sukhishvili S 2009 J. Am. Chem. Soc. 131 7480
[10]	Feng J J, Gernert U, Sezer M, Kuhlmann U, Murgida D H, David C, Richter M, Knorr A, Hildebrandt P, Weidinger I M 2009 Nano Lett. 9 298
[11]	Schietinger S, Barth M, Aichele T, Benson O 2009 Nano Lett. 9 1694
[12]	Kolesov R, Grotz B, Balasubramanian G, Stöhr R J, Nicolet A A, Hemmer P R, Jelezko F, Wrachtrup J 2009 Nat. Phys. 5 470
[13]	Damm S, Lordan F, Murphy A, McMillen M, Pollard R, Rice J H 2014 Plasmonics 9 1371
[14]	Lordan F, Damm S, Kennedy E, Mallon C, Forster R J, Keyes T E, Rice J H 2013 Plasmonics 8 1567
[15]	Song J, Cheng S, Li H, Guo H, Xu S, Xu W 2014 Mater. Lett. 135 214
[16]	Lin T, Yu G, Wee A, Shen Z, Loh K P 2000 Appl. Phys. Lett. 77 2692
[17]	Le Ru E, Blackie E, Meyer M, Etchegoin P G 2007 J. Phys. Chem. C 111 13794
[18]	Tang J, Guo H, Chen M, Yang J, Tsoukalas D, Zhang B, Liu J, Xue C, Zhang W 2015 Sensor. Actuat. B: Chem. 218 145
[19]	Pons T, Medintz I L, Sapsford K E, Higashiya S, Grimes A F, English D S, Mattoussi H 2007 Nano Lett. 7 3157
[20]	Shi Y, Guo H, Yang J, Zhao M, Liu J, Xue C, Tang J 2015 Materials 8 3806
[21]	Cherukulappurath S, Johnson T W, Lindquist N C, Oh S H 2013 Nano Lett. 13 5635
[22]	Liu F, Tang C, Zhan P, Chen Z, Ma H, Wang Z 2014 Sci. Rep. 4 4494
[23]	Atay T, Song J H, Nurmikko A V 2004 Nano Lett. 4 1627
[24]	Kruszewski S, Wybranowski T, Cyrankiewicz M, Ziomkowska B, Pawlaczyk A 2008 Acta Phys. Pol. A 113 1599
[25]	Lakowicz J R 2001 Anal. Biochem. 298 1
[26]	Ito Y, Matsuda K, Kanemitsu Y 2007 Phys. Rev. B 75 033309

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