Microstructure and UV Fluorescence of Amorphous I/Au Composite Nanofilms Based on LVDCS Method

Abstract

The amorphous I/Au composite nanoflms were prepared by low vacuum direct current sputtering (LVDCS) method. The optimized preparation technologies contain growth pressure, time, gaseous environment and annealing conditions. The maximum fuorescence emission (λ ^em _max) of I/Au nanoflms was observed at wavelength of 375 nm, and the intensity of fuorescence emission peak of annealed I/Au flms was smaller than that of unannealed one due to fewer amorphous Au nanoparticles, caused by annealing treatment. In the UV-Vis absorption spectra, the intensity of UV-Vis absorption peak of annealed I/ Au nanoflms is larger than that of the unannealed one. This work also developed a new way to grow I/Au composite fuorescent thin flms.

Keywords

LVDCS method / amorphous / I/Au nanoflms / fuorescence

References

[1] Park JH, Von Maltzahn G, Xu MJ, et al. Cooperative Nanomaterial System to Sensitize, Target, and Treat Tumors[J]. P. Natl. Acad. Sci. USA., 2010, 107: 981-986.

[2] Larsson EM, Langhammer C, Zorić I, et al. Nanoplasmonic Probes of Catalytic Reactions[J]. Science, 2009, 326: 1091-1094.

[3] Kosako T, Kadoya Y, Hofmann HF. Directional Control of Light by A Nano-Optical Yagi[ndash]Uda Antenna[J]. Nat. Photonics, 2010, 4: 312-315.

[4] Zijlstra P, Chon JWM, Gu M. Five-Dimensional Optical Recording Mediated by Surface Plasmons in Gold Nanorods[J]. Nature, 2009, 459: 410-413.

[5] He YQ, Liu SP, Kong L, et al. A Study on the Sizes and Concentrations of Gold Nanoparticles by Spectra of Absorption, Resonance Rayleigh Scattering and Resonance Non-Linear Scattering[J]. Spectrochim. Acta A, 2004, 61: 2 861-2 866.

[6] Bell SE, Mccourt MR. SERS Enhancement by Aggregated Au Colloids: Effect of Particle Size[J]. Phys. Chem. Chem. Phys., 2009, 11: 7 455-7 462.

[7] Ahmadi TS, Wang ZL, Green TC, et al. Shape-Controlled Synthesis of Colloidal Platinum Nanoparticles[J]. Science, 1996, 272: 1 924-1 925.

[8] Belloni J. Metal Nanocolloids[J]. Curr. Opin. Colloid In., 1996, 1: 184-196.

[9] Henglein A. Physicochemical Properties of Small Metal Particles in Solution: “Microelectrode” Reactions, Chemisorption, Composite Metal Particles, and the Atom-to-Metal Transition[J]. J. Phys. Chem., 1993, 97: 5 457-5 471.

[10] Pal T, Jana NR. Reversible Formation and Dissolution of Silver Nanoparticles in Aqueous Surfactant Media[J]. Langmuir, 1997, 13: 1 481-1 485.

[11] Jana NR, Sau TK, Pal T. Growing Small Silver Particle as Redox Catalyst[J]. J. Phys. Chem. B, 1999, 103: 115-121.

[12] Whetten RL, Shafgullin MN, Khoury JT, et al. Crystal Structures of Molecular Gold Nanocrystal Arrays[J]. Accounts Chem. Res., 1999, 32: 397-406.

[13] Collier CP, Vossmeyer AT, Heath JR. Nanocrystal Superlattices[J]. Annu. Rev. Phys. Chem., 1998, 49: 371-404.

[14] Rao CNR. Novel Materials, Materials Design and Synthetic Strategies: Recent Advances and New Directions[J]. J. Mater. Chem., 1999, 9: 1-14.

[15] Schmid G, Baumle M, Geerkens M, et al. Current and Future Applications of Nanoclusters[J]. Chem. Soc. Rev., 1999, 28: 179-185.

[16] Zhu J, Wang YC. Ultraviolet and Blue-Violet Photoluminescence of Gold Nanoparticles[J]. Spectrosc. Spect. Anal., 2005, 25: 235-238.

[17] Sau TK, Pal A, Jana NR, et al. Size Controlled Synthesis of Gold Nanoparticles Using Photochemically Prepared Seed Particles[J]. J. Nanopart. Res., 2001, 3: 257-261.

[18] Ji XH, Song XN, Li J, et al. Size Control of Gold Nanocrystals in Citrate Reduction: The Third Role of Citrate[J]. J. Am. Chem. Soc., 2007, 129: 13 939-13 948.

[19] Luo XL, Xu JJ, Zhang Q, et al. Electrochemically Deposited Chitosan Hydrogel for Horseradish Peroxidase Immobilization Through Gold Nanoparticles Self-Assembly[J]. Biosens. Bioelectron., 2005, 21: 190-196.

[20] Zhao JW, Wang YC, Zhu J. Fluorescence Spectra Characters of Nano-structured Gold Thin-Film[J]. Spectrosc. Spect. Anal., 2004, 24: 1 609-1 611.

[21] Meng QY, Li SQ, Kang YX, et al. Electrical and Optical Properties of Nano Aluminum Film/Particle Structure[J]. J. Wuhan Univ. Technol., 2017, 32: 989-993.

[22] Ding YF, Pan LL, Li SQ, et al. Fabrication and Investigation of 26NCA Films Exhibiting Tunable Blue Fluorescence Based on LVPVDM[J]. J. Nanomater., 2018, 2018: 1-11.