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. Author manuscript; available in PMC: 2019 Aug 9.
Published in final edited form as: Chem Mater. 2018 Jan 25;30(4):1427–1435. doi: 10.1021/acs.chemmater.7b05310

Figure 2.

Figure 2.

(a) UV-vis-NIR spectra of mini AuNRs from AR 2.2 to 3.8. The blue, green, brown, and orange spectra correspond to AR 2.2, 2.6, 3.2, and 3.8, respectively. TEM images of ascorbic-acid-reduced mini AuNRs: AR (b) 2.2, (c) 2.6, (d) 3.2, and (e) 3.8.