Fig. 5: Colorimetric temperature sensing and proposed mechanism.
From: A temperature sensor with a wide spectral range based on a dual-emissive TADF dendrimer system
a Temperature-dependent emission spectra of 2GCzBPPZ in n-hexane at a concentration of 1.6 × 10−5 M (λexc = 340 nm). b Photos of 2GCzBPPZ at various temperatures (UV torch λexc = 360 nm). c CIE plot of the corresponding emission spectra. d Ratiometric plot of I575/I475 vs temperature upon decreasing the temperature below room temperature. e Ratiometric plot of I475/I575 vs temperature upon increasing the temperature from room temperature (right). f Schematic representation of the thermal response and two-state equilibration model describing the observed abnormal temperature-responsive dual emission phenomenon of 2GCzBPPZ. g Spatio-temperature sensor application in paraffin wax (paraffin embedded with 2GCzBPPZ in a test tube (length:160 mm, diameter: 16 mm) excited with a UV torch, λexc = 360 nm).
