Tunable Thermofluorochromic Sensors Based on Conjugated Polymers
Bellacanzone, Christian (Institut Català de Nanociència i Nanotecnologia)
Otaegui, Jaume Ramon (Institut Català de Nanociència i Nanotecnologia)
Hernando Campos, Jordi (Universitat Autònoma de Barcelona. Departament de Química)
Ruiz-Molina, Daniel (Institut Català de Nanociència i Nanotecnologia)
Roscini, Claudio (Institut Català de Nanociència i Nanotecnologia)

Date:	2022
Abstract:	Even though thermofluorochromic materials are eternal candidates for their use in multiple applications, they are still limited as they require complex synthetic strategies to accomplish tunable optical properties and/or provide optical changes only over a very wide temperature range. By taking advantage of the high sensitivity of the optical properties of conjugated polymers and oligomers to the external environment, herein phase change material (PCM)-based thermofluorochromic mixtures are created, where the solid-to-liquid transition of the PCM host triggers a sharp fluorescence color change of the dispersed polymers/oligomers. Fluorophore conjugation length, concentration, and PCM nature can be used to vary the spectral properties of the resulting materials along the visible region, covering a large part of the CIE 1931 color space. For the preparation of functional devices, this behavior can be directly transferred to the solid state by soaking or printing cellulose papers with the obtained thermofluorochromic mixtures as well as by structuring them into solid lipid particles that can be dispersed within polymer matrices. The resulting materials show very promising features as thermal sensors and anticounterfeiting labels.
Grants:	Agencia Estatal de Investigación RTI2018-098027-B-C21 Agencia Estatal de Investigación PID2019-106171RB-I00 Agencia Estatal de Investigación SEV-2017-0706 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-465
Note:	Altres ajuts: CERCA Programme/Generalitat de Catalunya
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Aggregation ; Conjugated polymers ; Fluorescence ; Phase-change materials ; Sensors ; Thermofluorochromism
Published in:	Advanced optical materials, Vol. 10, Issue 10 (May 2022) , art. 2102423, ISSN 2195-1071

DOI: 10.1002/adom.202102423

11 p, 5.9 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group in Electrochemistry, Photochemistry and Organic Reactivity (GEFRO)
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles