Temperature‐Dependent Fluorescence of Cu₅ Metal Clusters: A Molecular Thermometer

Abstract

The heat is on: A Cu5 metal cluster presents distinctive photophysical properties that result in a temperature-dependent fluorescent quantum yield and excited-state lifetime between −45 and +80 °C, both in solution and as a solid. Unprecedented accuracy in temperature determination by fluorescence measurements was achieved with this complex, thus making it suitable for applications in, for example, biology and (nano)materials research

Cu(I) hybrid inorganic–organic materials with intriguing stimuli responsive and optoelectronic properties

“…We mention here another LMT based on a copper(I) compound reported by Prodi et al [37]. The trizwitterionic dicationic cluster [Cu 5 (EtNC(S)PPh 2 NPPh 2 C(S)NEt) 3 ](PF 6 ) 2 , 14, displays excellent thermochromic luminescence with Photoluminescence Quantum Yield (PLQY) and lifetime strongly influenced by T in the range of 228-353 K regardless the presence of oxygen.…”

Imaging agents based on lanthanide doped nanoparticles

“…31 The parameters to be considered are three: (i) the relative intensity of each transition; (ii) the sensitivity of the detectors at the different wavelengths, and (iii) the transparency of tissues at each wavelength. Although this resolution is much lower than the one obtained with other systems, 105 it is possible to appreciate the temperature increase obtained in a single-beam plasmonicmediated heating experiment, as described in Fig. The tissue transparency was instead evaluated measuring the intensity transmitted by layers of phantom tissues (mimicking the optical properties of human skin) of different thicknesses.…”

Phase-change hybrids for thermo-responsive sensors and actuators

“…The present system may be used as an FL thermometer for medical examination and for air-conditioning applications. [50][51][52][53] BOPP films, which are commercialized as tobacco packaging materials, are known to be exceptionally tough, flexible, transparent and chemical-repellent. These physical properties meet all the requirements for a supporting layer in the actuator applications suggested by our study.…”