Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
권호 표지
DOI QR코드

DOI QR Code

Silica-encapsulated ZnSe Quantum Dots as a Temperature Sensor Media

온도센서용 실리카에 담지된 ZnSe 양자점 소재

  • Lee, Ae Ri (Department of Chemical & Biological Engineering, Gachon Univ.) ;
  • Park, Sang Joon (Department of Chemical & Biological Engineering, Gachon Univ.)
  • 이애리 (가천대학교 화공생명공학과) ;
  • 박상준 (가천대학교 화공생명공학과)
  • Received : 2015.04.06
  • Accepted : 2015.05.06
  • Published : 2015.06.10
Download PDF
⟨ Previous Next ⟩

Abstract

Silica encapsulated ZnSe quantum dots (QDs) were prepared by employing two microemulsion systems: AOT/water/cyclohexane microemulsions containing ZnSe quantum dots with NP5/water/cyclohexane microemulsions containing tetraethylorthosilicate (TEOS). Using this method, cubic zinc blende nanoparticles (3 nm in diameter) were synthesized and encapsulated by silica nanoparticles (20 nm in diameter). The temperature dependence of photoluminescence (PL) for silica-encapsulated ZnSe QDs was investigated to evaluate this material as a temperature sensor media. The fluorescence emission intensity of silica-encapsulated ZnSe nanoparticles (NPs) was decreased with an increase of ambient temperature over the range from $30^{\circ}C$ to $60^{\circ}C$ and a linear relationship between the temperature and the emission intensity was observed. In addition, the temperature dependence of PL intensity for silica-encapsulated ZnSe NPs showed a reversible pattern on ambient temperature. A reversible temperature dependence of the luminescence combined with its insensitivity toward quenching by oxygen due to silica coating established this material as an attractive media for temperature sensor applications.

본 연구에서는 polyoxyethylenenonylphenylether (NP5) 계면활성제와 sodium bis(2-ethylhexyl) sulfosuccinate (AOT) 계면활성제가 형성하는 두 종류의 W/O 마이크로에멀젼을 이용해서 실리카에 담지된 ZnSe 양자점을 제조하였다. 본 방법으로 3 nm 크기의 cubic zinc blende 결정 구조를 갖는 ZnSe 입자를 합성하였으며 약 20 nm 크기의 실리카 입자에 효과적으로 담지 시킬 수 있었다. 합성된 입자의 photoluminescence (PL) 주변 온도 의존성을 $30^{\circ}C$에서 $60^{\circ}C$ 범위에서 확인한 결과, 온도가 증가함에 따라 PL intensity가 감소하였으며 PL intensity와 온도와는 높은 상관관계를 나타내었다. 아울러 PL intensity와 온도의 상관관계는 온도를 낮은 곳에서 올려가며 측정한 경우와 반대로 낮추며 측정한 경우 같은 상관도를 나타내어 온도 의존성이 가역적임을 알 수 있었다. 그 결과 실리카에 담지된 ZnSe 양자점이 온도 센서로 사용될 수 있는 잠재적인 매체임을 확인하였다.

Keywords

References

  1. Y. Yang, Y. Zheng, W. Cao, A. Titov, J. Hyvonen, J. R. Manders, J. Xue, P. H. Holloway, and L. Qian, High-efficiency light-emitting devices based on quantum dots with tailored nanostructures, Nat. Photonics, 9, 259-266 (2015).
  2. P. Chuang, C. C. Lin, and R. S. Liu, Emission-tunable CuInS2/ZnS quantum dots: structure, optical properties, and application in white light-emitting diodes with high color rendering index, ACS Appl. Mater. Interfaces, 6, 15379-15387 (2014). https://doi.org/10.1021/am503889z
  3. M. Ahmed, A. Guleria, M. C. Rath, A. K. Singh, S. Adhikari, and S. K. Sarkar, Facile and Green Synthesis of CdSe Quantum Dots in Protein Matrix: Tuning of Morphology and Optical Properties, J. Nanosci. Nanotechnol., 14, 5730-5742 (2014). https://doi.org/10.1166/jnn.2014.8857
  4. B. Dubertret, P. Skourides, D. J. Norris, V. Noireaux, A. H. Brivanlou, and A. Libchaber, In Vivo Imaging of Quantum Dots Encapsulated in Phospholipid Micelles, Science, 298, 1759-1762 (2002). https://doi.org/10.1126/science.1077194
  5. J. K. Jaiswal, H. Mattoussi, J. M. Mauro, and S. M. Simon, Long-term multiple color imaging of live cells using quantum dot bioconjugates, Nat. Biotechnol., 21, 47-51 (2003)
  6. L. Yang, R. S. Xie, L.Y. Liu, D. Q. Xiao, and J. G. Zhu, Synthesis and Characterization of ZnSe Nanocrystals by W/O Reverse Microemulsion Method: The Effect of Cosurfactant, J. Phys. Chem. C., 115, 19507-19512 (2011). https://doi.org/10.1021/jp204798y
  7. H. S Kim, J. S. Kim, and S. J. Park, Preparation of ZnSe Nanocrystals Using Water-in-Oil Microemulsions, Jpn. J. Appl. Phys., 49, 06GJ08_1-06GJ08_4 (2010).
  8. Y. Yang, L. Jing, X. Yu, D. Yan, and M. Gao, Coating Aqueous Quantum Dots with Silica via Reverse Microemulsion Method: Toward Size-Controllable and Robust Fluorescent Nanoparticles, Chem. Mater., 19, 4123-4128 (2007). https://doi.org/10.1021/cm070798m
  9. M. Darbandi, R. Thomann, and T. Nann, Single Quantum Dots in Silica Spheres by Microemulsion Synthesis, Chem. Mater., 17, 5720-5725 (2005). https://doi.org/10.1021/cm051467h
  10. W. L. Wilson, P. F. Szajowski, and L. E. Brus, Quantum Confinement in Size-Selected, Surface-Oxidized Silicon Nanocrystals, Science, 262, 1242-1244 (1993). https://doi.org/10.1126/science.262.5137.1242
  11. P. Mulvaney, L. M. Liz-Marza'n, M. Giersig, and T. Ung, Silica encapsulation of quantum dots and metal clusters, J. Mater. Chem., 10, 1259-1270 (2000). https://doi.org/10.1039/b000136h
  12. T. Selvan, C. Li, M. Ando, and N. Murase, Formation of luminescent CdTe-silica nanoparticles through an inverse microemulsion technique, Chem. Lett., 33, 434-435 (2004). https://doi.org/10.1246/cl.2004.434
  13. W. Stober, A. Fink, and E. Bohn, Controlled growth of monodisperse silica spheres in the micron size range, J. Colloid Interface Sci., 26, 62-69 (1968). https://doi.org/10.1016/0021-9797(68)90272-5
  14. Y. Wang, S. H. Niu, Z. J. Zhang, H. T. Wang, C. W. Yuan, and D.G. Fu, Silica Coating of Water-Soluble CdTe/CdS Core-Shell Nanocrystals by Microemulsion Method, Chin. J. Chem. Phys., 20, 685-689 (2007). https://doi.org/10.1088/1674-0068/20/06/685-689
  15. K. Liu, J. H. Kim, and S. J. Park, Optical Properties of Silica-Encapsulated ZnSe Nanocrystals Prepared with Water-in-Oil Microemulsions, Jpn. J. Appl. Phys., 52, 01AN01_1-01AN01_5 (2013).
  16. A. Lee, J. H. Kim, I. S. Yoo, and S. J. Park, Encapsulated of ZnSe Quantum Dots within Silica by Water-in-Oil Microemulsions, Appl. Chem. Eng., 22, 328-331 (2011).
  17. G. W. Walker, V. C. Sundar, C. M. Rudzinski, A. W. Wun, M. G. Bawendi, and D. G. Nocera, Quantum-dot optical temperature probes, Appl. Phys. Lett., 83, 3555-3557 (2003). https://doi.org/10.1063/1.1620686
  18. J. W. Liu, Y. Zhang, C. W. Ge, Y. L. Jin, S. L. Hu, and N. Gu, Temperature-dependent photoluminescence of highly luminescent water-soluble CdTe quantum dots, Chin. Chem. Lett., 20, 977-980 (2009). https://doi.org/10.1016/j.cclet.2009.03.036
  19. T. C. Liu, Z. L. Huang, and Q.M. Luo, Characterization of the coupling of quantum dots and immunoglobulin antibodies, Anal. Chim. Acta, 559, 120-123 (2006). https://doi.org/10.1016/j.aca.2005.11.053
  20. M. Vibin, R. Vinayakan, A. John, F. B. Fernandez and A. Abraham, Effective cellular internalization of silica-coated CdSe quantum dots for high contrast cancer imaging and labelling applications, Cancer Nano., 5, 1-12 (2014). https://doi.org/10.1186/s12645-014-0001-y

Cited by

  1. 수열합성법에 의한 Zinc Selenide 나노 분말 합성 및 미세구조 특성 연구 vol.27, pp.9, 2015, https://doi.org/10.3740/mrsk.2017.27.9.459