Long-term stability of surfactant-free gold nanostars
Source abstract
Abstract
This work investigates the long-term stability of suspensions of surfactant-free gold nanostars with mean diameter of 78 ± 13 nm (measured from tip to tip across the nanostar).We monitored the optical and morphological properties of the nanostars over the course of several days after synthesis by observing the changes in the UV–visible absorption spectra and mean radius of curvature of the nanostar tips. An aging process can be observed, evident in the blunting of the nanostar tips, leading to a blue shift in the absorption maximum. Stability is greatly improved by depositing on the nanostars a monolayer of mercaptopropionic acid (MPA), possibly because of the formation of the gold–sulfur (Au–S) bond that limits the mobility of the Au atoms. Capping the nanostars with MPA is an easy additional step for extending the stability of the nanostars in suspension without significant
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Plasmonic and Surface Plasmon Research · Nanocluster Synthesis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (32)
Show source-provided references
1. Ahmed W, Kooij ES, van Silfhout A, Poelsema B (2010) Controlling the morphology of multi-branched gold nanoparticles. Nanotechnology 21:125,605-1-6. doi: 10.1088/0957-4484/21/12/12560510.1088/0957-4484/21/12/125605 ↗
2. Allijn IE, Leong W, Tang J, Gianella A, Mieszawska AJ, Fay F, Ma G, Russell S, Callo CB, Gordon RE, Korkmaz E, Post JA, Zhao Y, Gerritsen HC, Thran A, Proksa R, Daerr H, Storm G, Fuster V, Fisher EA, Fayad ZA, Mulder WJM, Cormode DP (2013) Gold nanocrystal labeling allows low-density lipoprotein imaging from the subcellular to macroscopic level. ACS Nano 7(11):9761–9770. doi: 10.1021/nn403258w10.1021/nn403258w ↗
3. Casu A, Cabrini E, Dona A, Falqui A, Diaz-Fernandez Y, Milanese C, Taglietti A, Pallavicini P (2012) Controlled synthesis of gold nanostars by using a Zwitterionic surfactant. Chemistry 18(30):9381–9390. doi: 10.1002/chem.20120102410.1002/chem.201201024 ↗
4. Cavallaro G, Triolo D, Licciardi M, Giammona G, Chirico G, Sironi L, Dacarro G, Don A, Milanese C, Pallavicini P (2013) Amphiphilic copolymers based on poly[(hydroxyethyl)-d, l-aspartamide]: a suitable functional coating for biocompatible gold nanostars. Biomacromolecules 14(12):4260–4270. doi: 10.1021/bm401130z10.1021/bm401130z ↗
5. Cheng Y, Meyers JD, Broome AM, Kenney ME, Basilion JP, Burda C (2011) Deep penetration of a PDT drug into tumors by noncovalent drug-gold nanoparticle conjugates. J Am Chem Soc 133(8):2583–2591. doi: 10.1021/ja108846h10.1021/ja108846h ↗
6. Esenturk EN, Walker ARH (2009) Surface-enhanced Raman scattering spectroscopy via gold nanostars. J Raman Spectrosc 40:86–91. doi: 10.1002/jrs.208410.1002/jrs.2084 ↗
7. Gao J, Huang X, Liu H, Zan F, Ren J (2012) Colloidal stability of gold nanoparticles modified with thiol compounds: bioconjugation and application in cancer cell imaging. Langmuir 28(9):4464–4471. doi: 10.1021/la204289k10.1021/la204289k ↗
8. Guerrero-Martinez A, Barbosa S, Pastoriza-Santos I, Liz-Marzan LM (2011) Nanostars shine bright for you: colloidal synthesis, properties and applications of branched metallic nanoparticles. Curr Opin Colloid Interface Sci 16:118–12710.1016/j.cocis.2010.12.007 ↗
9. Hao F, Nehl CL, Hafner JH, Nordlander P (2007) Plasmon resonances of a gold nanostar. Nano Lett 7(3):729–732. doi: 10.1021/nl062969c10.1021/nl062969c ↗
10. Hrelescu C, Sau TK, Rogach AL, Jackel F, Feldmann J (2009) Single gold nanostars enhance Raman scattering. Appl Phys Lett 94:153,113-1-3. doi: 10.1063/1.311964210.1063/1.3119642 ↗
11. Huang X, Neretina S, El-Sayed MA (2009) Gold nanorods: from synthesis and properties to biological and biomedical applications. Adv Mater 21(48):4880–4910. doi: 10.1002/adma.20080278910.1002/adma.200802789 ↗
12. Jarvis RM, Goodacre R (2004) Discrimination of bacteria using surface-enhanced Raman spectroscopy. Anal Chem 76(1):40–47. doi: 10.1021/ac034689c10.1021/ac034689c ↗
13. Jeong GH, Lee YW, Kim M, Han SW (2009) High-yield synthesis of multi-branched gold nanoparticles and their surface-enhanced Raman scattering properties. J Colloids 329(1):97–102. doi: 10.1016/j.jcis.2008.10.00410.1016/j.jcis.2008.10.004 ↗
14. Kastanos EK, Kyriakides A, Hadjigeorgiou K, Pitris C (2009) A novel method for urinary tract infection diagnosis and antibiogram using Raman spectroscopy. J Raman Spectrosc 41:958–963. doi: 10.1002/jrs.254010.1002/jrs.2540 ↗
15. Khoury CG, Vo-Dinh T (2008) Gold nanostars for surface-enhanced raman scattering: synthesis, characterization and optimization. J Phys Chem C 112(48):18,849–18859. doi: 10.1021/jp805474710.1021/jp8054747 ↗
16. Kingery WD, Uhlmann DRDR, Bowen HK (1976) Introduction to ceramics, 2nd edn. Wiley, New York
17. Kooij E, Ahmed W, Hellenthal C, Zandvliet H, Poelsema B (2012) From nanorods to nanostars: tuning the optical properties of gold nanoparticles. Colloids Surf A 413:231–238. doi: 10.1016/j.colsurfa.2012.01.04110.1016/j.colsurfa.2012.01.041 ↗
18. Kumar PS, Pastoriza-Santos I, Rodriguez-Gonzalez B, de Abajo FJG, Liz-Marzan LM (2008) High-yield synthesis and optical response of gold nanostars. Nanotechnology 19:015,606-1-6. doi: 10.1088/0957-4484/19/01/015606
19. Liu Y, Wu P (2013) Meditating metal coenhanced fluorescence and sers around gold nanoaggregates in nanosphere as bifunctional biosensor for multiple dna targets. ACS Appl Mater Interfaces 5(12):5832–5844. doi: 10.1021/am401468a10.1021/am401468a ↗
20. Nam J, La WG, Hwang S, Ha YS, Park N, Won N, Jung S, Bhang SH, Ma YJ, Cho YM, Jin M, Han J, Shin JY, Wang EK, Kim SG, Cho SH, Yoo J, Kim BS, Kim S (2013) pH responsive assembly of gold nanoparticles and spatiotemporally concerted drug release for synergistic cancer therapy. ACS Nano 7(4):3388–3402. doi: 10.1021/nn400223a10.1021/nn400223a ↗
21. Pallavicini P, Dona A, Casu A, Chirico G, Collini M, Dacarro G, Falqui A, Milanese C, Sironi L, Taglietti A (2013) Triton X-100 for three-plasmon gold nanostars with two photothermally active NIR (near IR) and SWIR (short-wavelength IR) channels. Chem Commun 49:6265–6267. doi: 10.1039/C3CC42999G10.1039/c3cc42999g ↗
22. Rodriguez-Lorenzo L, Romo-Herrera JM, Perez-Juste J, Alvarez-Puebla RA, Liz-Marzan LM (2011) Reshaping and LSPR tuning of Au nanostars in the presence of CTAB. J Mater Chem 21:11,544–1154910.1039/c1jm10603a ↗
23. Rodriguez-Oliveros R, Sanchez-Gil JA (2012) Gold nanostars as thermoplasmonic nanoparticles for optical heating. Opt Express 20(1):621–62610.1364/OE.20.000621 ↗
24. Sironi L, Freddi S, Caccia M, Pozzi P, Rossetti L, Pallavicini P, Don A, Cabrini E, Gualtieri M, Rivolta I, Panariti A, DAlfonso L, Collini M, Chirico G (2012) Gold branched nanoparticles for cellular treatments. J Phys Chem C 116(34):18,407–18,418. doi: 10.1021/jp305021k10.1021/jp305021k ↗
25. Tamburro D, Fredolini C, Espina V, Douglas TA, Ranganathan A, Ilag L, Zhou W, Russo P, Espina BH, Muto G, Petricoin EF, Liotta LA, Luchini A (2011) Multifunctional core-shell nanoparticles: discovery of previously invisible biomarkers. J Am Chem Soc 133(47):19,178–19188. doi: 10.1021/ja207515j10.1021/ja207515j ↗
26. Trigari S, Rindi A, Margheri G, Sottini S, Dellepiane G, Giorgetti E (2011) Synthesis and modeling of gold nanostars with tunable morphology and extinction spectrum. J Mater Chem 21:6531–6540. doi: 10.1039/c0jm04519e10.1039/c0jm04519e ↗
27. Vigderman L, Khanal BP, Zubarev ER (2012) Functional gold nanorods: synthesis, self-assembly, and sensing applications. Adv Mater 24(36):4811–4841. doi: 10.1002/adma.20120169010.1002/adma.201201690 ↗
28. Wheeler DA, Green TD, Wang H, Fernandez-Lopez C, Liz-Marzan L, Zou S, Knappenberger KL, Zhang JZ (2012) Optical properties and coherent vibrational oscillations of gold nanostars. Chem Phys Lett 543:127–132. doi: 10.1016/j.cplett.2012.06.05810.1016/j.cplett.2012.06.058 ↗
29. Wu HL, Chen CH, Huang MH (2009) Seed-mediated synthesis of branched gold nanocrystals derived from the side growth of pentagonal bipyramids and the formation of gold nanostars. Chem Mater 21:110–11410.1021/cm802257e ↗
30. Yuan H, Fales AM, Khoury CG, Liu J, Vo-Dinh T (2012a) Spectral characterization and intracellular detection of surface-enhanced Raman scattering (SERS)-encoded plasmonic gold nanostars. J Raman Spectrosc 44:234–23910.1002/jrs.4172 ↗
31. Yuan H, Fales AM, Vo-Dinh T (2012b) TAT peptide-functionalized gold nanostars: enhanced intracellular delivery and efficient nir photothermal therapy using ultralow irradiance. J Am Chem Soc 134(28):11,358–11361. doi: 10.1021/ja304180y10.1021/ja304180y ↗
32. Yuan H, Khoury CG, Hwang H, Wilson CM, Grant GA, Vo-Dinh T (2012c) Gold nanostars: surfactant-free synthesis, 3D modelling, and two-photon photoluminescence imaging. Nanotechnology 23(7):075,10210.1088/0957-4484/23/7/075102 ↗