“…2 The LSPR can be tuned over a broad spectral range from visible to infrared wavelength by controlling the rod's aspect ratio (the ratio of length to diameter). 1,3 This unique property in combination with the tunable size, easy surface modification, and good biocompatibility endows AuNRs with promising and fascinating prospects in research applications including catalysis, 4,5 sensing, 6,7 imaging, 8,9 and theranostics. 10,11 The seed-mediated growth method is currently the most widely used method for the synthesis of AuNRs proposed by Murphy et al in 2001 and improved by Elsayed et al in 2003.…”