Lanthanide-Based Langmuir–Blodgett Multilayers: Multi-Emissive, Temperature-Dependent Thin Films

Multi-emissive compounds have attracted significant attention from the research community owing to wide array of potential application areas. However, move towards application, such systems should be readily immobilized by solution-based methods form soft materials as gels and films. Herein we report use Langmuir–Blodgett (LB) deposition easily immobilize luminescent lanthanide-based amphiphilic solids into multi-emissive ultrathin LB films, multilayering different amphiphiles. Utilizing this technique, reliably fabricated dual- triple-emissive films where overall emission film is tuned. Furthermore, demonstrated that these are temperature-dependent, with profiles significantly altering 294 340 K, resulting in colour changes ultrathin, contactless ratiometric thermometer coatings.