Theoretical Comparison of Optical Properties of Near-Infrared Colloidal Plasmonic Nanoparticles.
We study optical properties of near-infrared absorbing colloidal plasmonic nanostructures that are of interest for biomedical theranostic applications: SiO2@Au core-shell particles, Au nanocages and Au nanorods. Full-wave field analysis is used to compare the absorption spectra and field enhancement of these structures as a function of their dimensions and orientation with respect to the incident field polarization. Absorption cross-sections of structures with the same volume and LSPR wavelength are compared to quantify differential performance for imaging, sensing and photothermal applications. The analysis shows that while the LSPR of each structure can be tuned to the NIR, particles with a high degree of rotational symmetry, i.e. the SiO2@Au and nanocage particles, provide superior performance for photothermal applications because their absorption is less sensitive to their orientation, which is random in colloidal applications. The analysis also demonstrates that Au nanocages are advantaged with respect to other structures for imaging, sensing and drug delivery applications as they support abundant E field hot spots along their surface and within their open interior. The modeling approach presented here broadly applies to dilute colloidal plasmonic nanomaterials of arbitrary shapes, sizes and material constituents and is well suited for the rational design of novel plasmon-assisted theranostic applications.
Dept. of Electrical Engineering, University at Buffalo SUNY, NY 14260 USA.
Kai
K
Liu
Dept. of Chemical and Biological Engineering, University at Buffalo SUNY, NY 14260 USA.
Xiaozheng
X
Xue
Dept. of Electrical Engineering, University at Buffalo SUNY, NY 14260 USA.|Dept. of Chemical and Biological Engineering, University at Buffalo SUNY, NY 14260 USA.
Edward P
EP
Furlani
Sci Adv. 2015 Dec 04;1(11):e1500988
26665175
Nanomedicine (Lond). 2016 Jul;11(13):1715-28
27348546
Chem Rev. 2011 Jun 8;111(6):3828-57
21648956
Nano Lett. 2009 Apr;9(4):1651-8
19271775
Appl Opt. 2013 Feb 20;52(6):1325-9
23435006
Angew Chem Int Ed Engl. 2010 Apr 1;49(15):2711-5
20235255
Lab Chip. 2012 Oct 7;12(19):3707-19
22782691
Nano Lett. 2005 Mar;5(3):473-7
15755097
Chem Rev. 2015 Oct 14;115(19):10410-88
26293344
Acc Chem Res. 2008 Dec;41(12):1578-86
18447366
ACS Nano. 2011 Aug 23;5(8):6434-48
21774456
Chem Rev. 1999 Jul 14;99(7):1823-1848
11849012
Nat Mater. 2009 Dec;8(12):935-9
19881498
J Am Chem Soc. 2010 Sep 15;132(36):12704-10
20722373
Nanoscale. 2014 Nov 6;6(23):14388-93
25333569
J Chem Phys. 2006 Oct 28;125(16):164705
17092118
Bioconjug Chem. 2013 Jun 19;24(6):897-906
23777334
Phys Rev E Stat Nonlin Soft Matter Phys. 2009 Feb;79(2 Pt 2):026607
19391863
Nat Nanotechnol. 2014 Dec;9(12):1002-6
25362475
ACS Nano. 2014 May 27;8(5):4440-9
24684549
Nanomedicine. 2012 Nov;8(8):1355-63
22370335
Chem Rev. 2016 Sep 28;116(18):10414-72
27367000
Adv Mater. 2007 Oct 17;19(20):3177-3184
18648528
J Phys Chem C Nanomater Interfaces. 2013 May 23;117(20):null
24224064