Gold Nanorods: Near-Infrared Plasmonic Photothermal Conversion and Surface Coating


In this paper, AuNRs colloids with SPRL located at ~810 nm and ~1100 nm were synthesized using an improved seed method. Based on the NIR lasers available, photothermal conversion of AuNRs were systematically studied compared with that of water. Under low power irradiation, the highest temperature is obtained when the SPRL wavelength of AuNRs is equal to the laser wavelength, and temperature of colloid increases from ~20°C to ~65°C. With increasing laser power (such as 6 W), the AuNRs colloid boils within a few minutes, and nanorods undergo a shape deformation from rod to spherical particle and even fusion, and the SPRL disappears. For further investigation, the obtained AuNRs were coated with SiO2 shell to form a core-shell nanostructure (Au@SiO2). The surface coating can be used not only in keeping the stability of AuNRs for further treatment, but also in increasing plasmonic property and biocompatibility. This work will be useful for designing plasmonic photothermal properties and further applications in nanomedicine.

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Cong, B. , Kan, C. , Wang, H. , Liu, J. , Xu, H. and Ke, S. (2014) Gold Nanorods: Near-Infrared Plasmonic Photothermal Conversion and Surface Coating. Journal of Materials Science and Chemical Engineering, 2, 20-25. doi: 10.4236/msce.2014.21004.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] H. Ma, P. M. Bendix and L. B. Oddershede, “Large-Scale Orientation Dependent Heating from a Single Irradiated Gold Nanorod,” Nano Letters, Vol. 12, No. 8, 2012, pp. 3954-3960.
[2] C. Kuemin, L. Nowack, L. Bozano, N. D. Spencer and H. Wolf, “Oriented Assembly of Gold Nanorods on the Sin- gle-Particle Level,” Advanced Functional Materials, Vol. 22, No. 4, 2012, pp. 702-708.
[3] S. E. Lohse and C. J. Murphy, “The Quest for Shape Control: A History of Gold Nanorod Synthesis,” Chemistry of Materials, Vol. 25, No. 8, 2013, pp. 1250-1261.
[4] M. Quinten, “Optical Properties of Nanoparticle Systems: Mie and Beyond,” 1st Edition, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, 2011.
[5] L. Vigderman, B. P. Khanal and E. R. Zubarev, “Functional Au Nanorods: Synthesis, Self-Assembly and Sensing Applications,” Advanced Materials, Vol. 24, No. 36, 2012, pp. 4811-4841.
[6] D. Nepal, K. Park and R. A. Vaia, “High-yield Assembly of Soluble and Stable Gold Nanorod Pairs for High-Temperature Plasmonics,” Small, Vol. 8, No. 7, 2012, pp. 1013-1020.
[7] L. B. Zhang, X. Zhou, S. X. Bao, Y. F. Shi, Y. Wang, “Rational Design and SERS Properties of Side-by-Side, End-to-End and End-to-Side Assemblies of Au Nanorods,” Journal of Materials Chemistry, Vol. 21, 2011, pp. 14448-14455.
[8] N. R. Jana, L. Gearheart and C. J. Murphy, “Wet Chemical Synthesis of High Aspect Ratio Cylindrical Au Nano- rods,” The Journal of Physical Chemistry B, Vol. 105, No. 19, 2001, pp. 4065-4067.
[9] N. R. Jana, L. Gearheart and C. J. Murphy, “Seed-Mediated Growth Approach for Shape-Controlled Synthesis of Spheroidal and Rod-Like Gold Nanoparticles Using a Surfactant Template,” Advanced Materials, Vol. 13, No. 18, 2001, pp. 1389-1393.<1389::AID-ADMA1389>3.0.CO;2-F
[10] B. Nikoobakht and M. A. El-Sayed, “Preparation and Growth Mechanism of Gold Nanorods (NRs) Using Seed-Mediated Growth Method,” Chemistry of Materials, Vol. 15, No. 10, 2003, pp. 1957-1962.
[11] K. C. Woo, L. Shao, H. J. Chen, Y. Liang and J. F. Wang, “Universal Scaling and Fano Resonance in the Plasmon Coupling between Gold Nanorods,” ACS NANO, Vol. 5, No. 7, 2011, pp. 5976-5986.
[12] L. Shao, K. C. Woo, H. J. Chen, Z. Jin and J. F. Wang, “Angle- and Energy-Resolved Plasmon Coupling in Gold Nanorod Dimers,” ACS NANO, Vol. 4, No. 6, 2010, pp. 3053-3062.
[13] P. Zijlstra, J. W. M. Chon and M. Gu, “Five-Dimensional Optical Recording Mediated by Surface Plasmons in Gold Nanorods,” Nature, Vol. 459, 2009, pp. 410-413.
[14] C. Novo, A. M. Funston and P. Mulvaney, “Direct Obseration of Chemical Reactions on Single Gold Nanocrystals Using Surface Plasmon Spectroscopy,” Nature Nanotechnology, Vol. 3, 2008, pp. 598-602.
[15] E. M. Larsson, C. Langhammer, I. Zoric and B. Kasemo, “Nanoplasmonic Probes of Catalytic Reactions,” Science, Vol. 326, No. 5956, 2009, pp. 1091-1094.
[16] X. Xu, T. H. Gibbons and M. B. Cortie, “Spectrally -Selective Gold Nanorod Coatings for Window Glass,” Gold Bulletin, Vol. 39, No. 4, 2006, pp. 156-165.
[17] D. P. Yang and D. X. Cui, “Advances and prospects of Au nanorods,” Chemistry—An Asian Journal, Vol. 3, No. 12, 2008, pp. 2010-2022.
[18] X. H. Huang, S. Neretina and M. A. El-Sayed, “Gold Nanorods: From Synthesis and Properties to Biological and Bio-medical Applications,” Advanced Materials, Vol. 21, No. 48, 2009, pp. 4880-4910.
[19] R. B. Jiang, S. Cheng, L. Shao, Q. F. Ruan and J. F. Wang, “Mass-Based Photothermal Comparison among Gold Nanocrystals, PbS Nanocrystals, Organic Dyes and Car-bon Black,” The Journal of Physical Chemistry C, Vol. 117, No. 17, 2013, pp. 8909-8915.
[20] H. Wang, T. B. Huff, D. A. Zweifel, W. He, P. S. Low, “In Vitro and In Vivo Two-Photon Luminescence Imaging of Single Gold Nanorods,” Proceedings of the National Academy of the Sciences of the U.S.A., Vol. 102, No. 44, 2005, pp. 15752-15756.
[21] E. B. Dickerson, E. C. Dreaden, X. Huang , I. H. El-Sayed and H. Chu, “Gold Nanorod Assisted Near- Infrared Plasmonic Photothermal Therapy (PPTT) of Squamous cell Carcinoma in Mice,” Cancer Letters, Vol. 269, No. 1, 2008, pp. 57-66.
[22] G. von. Maltzahn, J. H. Park, A. Agrawal, N. K. Bandaru, S. K. Das, “Computationally Guided Photothermal Tumor Therapy Using Long-Circulating Gold Nanorod Antennas,” Cancer Research, Vol. 69, 2009, pp. 3892-3900.
[23] R. Nadejda and J. Z. Zhang, “Photothermal Ablation Therapy for Cancer Based on Metal Nanostructures,” Science in China Series B-Chemistry, Vol. 52, No. 10, 2009, pp. 1559-1575.
[24] J. Wang, G. Z. Zhu, M. X. You, E. Q. Song and M. I. Shukoor, “Assembly of Aptamer Switch Probes and Photo-sensitizer on Gold Nanorods for Targeted Photothermal and Photodynamic Cancer Therapy,” ACS NANO, Vol. 6, No. 6, 2012, pp. 5070-5077.
[25] Z. Wang, “Plasmon—Resonant Gold Nanoparticles for Cancer Optical Imaging,” Science China Physics, Mecha- nics & Astronomy, Vol. 56, No. 3, 2013, pp. 506-513.
[26] Z. J. Zhang, L. M. Wang, J. Wang, X. M. Jiang and X. H. Li, “Mesoporous Silica-Coated Gold Nanorods as a Light-Mediated Multifunctional Theranostic Platform for Cancer Treatment,” Advanced Materials, Vol. 24, No. 11, 2012, pp. 1418-1423.
[27] J. H. Wang, B. Wang, Q. Liu, Q. Li and H. Huang, “Bimodal Optical Diagnostics of Oral Cancer Based on Rose Bengal Conjugated Gold Nanorod Platform,” Biomaterials, Vol. 34, No. 17, 2013, pp. 4274-4283.
[28] A. K. Oyelere, P. C. Chen and X. H. Huang, “Peptide-Conjugated Gold Nanorods for Nuclear Targeting,” Bio-conjugate Chemistry, Vol. 18, No. 5, 2007, pp. 1490- 1497.
[29] T. Ming, L. Zhao, M. Xiao and J. F. Wang, “Resonance-Coupling-Based Plasmonic Switches,” Small, Vol. 6, No. 22, 2010, pp. 2514-2519.
[30] S. L Ke, C. X. Kan, J. S. Liu and B. Cong, “Controlled Assembly of Gold Nanorods Using Tetrahydrofuran,” RSC Advances, Vol. 3, No. 8, 2013, pp. 2690-2696.
[31] H. C. Li, C. X. Kan, Z. G. Yi, X. L. Ding and Y. L. Cao, “Synthesis of One Dimensional Gold Nanostructures,” Journal of Nanomaterials, Vol. 2010, 2010.
[32] H. J. Chen, L. Shao, T. Ming, Z. H. Sun and C. M. Zhao, “Understanding the Photothermal Conversion Efficiency of Gold Nanocrystals,” Small, Vol. 6, No. 20, 2010, pp. 2272-2280.

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