Reshaping of Triangular Silver Nanoplates for Temperature Indicator
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The triangular silver nanoplates displayed strong LSPR features over a broad range of light from the visible to the near-infrared region (NIR). The intrinsic instability of this nanoplates gives some advantage for colourimetric detection by controlling the shape from triangular into spheroids by adding some halide etchants or acids. In the current work, we introduced specific monomer as an etchant of triangular silver nanoplates. When aged with this monomer, these nanoplates transformed into oblate nanospheroids and exhibit distinct colours at a different temperature. This correlation between shape evolution and the ageing temperature can be applied as colourimetric sensing of temperature indicators.