LUMINESCENT FILMS BASED ON CELLULOSE ACETATE BUTYRATE (CAB) DOPED WITH EUROPIUM COMPLEX WITH POTENTIAL APPLICATION AS EMISSIVE LAYER

A. L. M. Arrozio (IC); Unifesp; Celso Molina

Paper Title

Authors

A. L. M. Arrozio (IC); Unifesp
Celso Molina

Modality

Pôster

Subject area

Síntese e caracterização de materiais

Publishing Date

12/12/2023

Country of Publishing

Brasil

Language of Publishing

Inglês

Paper Page

https://www.even3.com.br/anais/workshop-do-ineo-2023/612705-luminescent-films-based-on-cellulose-acetate-butyrate-(cab)-doped-with-europium-complex-with-potential-applicatio

ISBN

978-65-272-0088-8

Keywords

CAB, [Eu(tta)3(H2O)2], luminescence, Flexible.

Summary

Polymers based on cellulose derivative have been attracting the interest due to the biodegradation of certain polymers concerning sustainable approach [1]. Cellulose Acetate Butyrate (CAB) is one the polymer that has interesting properties such as easy processability, film forming, flexibility, high transparence in the visible range, compatible with different coatings and biodegradation. Its solubility in a wide variety of solvents and solvent combinations make it useful as an additive in numerous coating compositions. It has been applied, for instance, as additive in printing inks and layer in humidity sensor [2] and diffuser layer to suppression of the viewing angle dependence on blue OLEDs [3]. Considering these properties CAB arises as potential matrix for immobilization of lanthanides for luminescent material applications. In this work, [Eu(tta)3(H2O)2] complex was incorporated, in different concentration 0.2 to 3.2% (w:w), in the Eastman CAB-551-0.2 (Butyryl 52wt, Acetyl 2wt and Hydroxyl 1.8% content) Mw 30000 by using ethyl acetate as a solvent. Films based on CAB-[Eu(tta)3(H2O)2] were synthesized by casting and characterized by FTIR-ATR, UV-Vis, TGA and Photoluminescence. Thin films by blade and spin coating deposition were also obtained on glass and PET-ITO substrates. Moreover, films presented high transparence in the visible range (400-800 nm), flexible and presented a broad band from 200 to 400 nm with maxima at 270 and 340 nm assigned to p-p* excited states of ligand. FTIR-ATR showed that complex was well dispersed in the CAB matrix. In addition, the films are thermally stable up to approximately 300 °C. Excitation spectra monitored at 614 nm (5D0 - 7F2) showed a broad band in the UV region with maximum peak shifted to higher energy as a function of complex content. Intra f-f emission spectra exhibited high intense red-orange sharp lines intra 4f6 ascribed to 5D0 - 7F0-4 transitions excited by antenna affect [4]. CIE diagram also showed (x,y) color coordinates. The lifetimes were obtained by decay curves fitted by first order exponential showed values of 0.32 ms. The synergism between CAB and Eu3+ complex show potential for flexible emitting luminescent layer for optical devices. Acknowledgments The Authors would like to thank São Paulo Research Foundation (FAPESP) grant #2014/50869-6, and CAPES (Education Ministry) (23038.000776/201754) via the projects of the National Institute for Science and Technology on Organic Electronics (INEO) for the financial support. Brazilian National Council for Scientific and Technological Development – CNPq # 160631/2022-0. Authors also thank LAMP - Max Planck Lab for FTIR-ATR measurements. Autocoat. Blade Coating. [1] Prog. Polymer. Sci. 26 (2001) 1605-1688 [2] Sensors & Actuators: B. Chemical 281 (2019) 212–220 [3] Organic Electronics 28 (2016) 31e38 [4] J. Lumin. 1997, 71 (3), 229–236.

Title of the Event: Workshop do INEO 2023
City of the Event: Nazaré Paulista
Title of the Proceedings of the event: Anais do Workshop INEO 2023
Name of the Publisher: Even3
Means of Dissemination: Meio Digital

How to cite

UNIFESP, A. L. M. Arrozio (IC);; MOLINA, Celso. LUMINESCENT FILMS BASED ON CELLULOSE ACETATE BUTYRATE (CAB) DOPED WITH EUROPIUM COMPLEX WITH POTENTIAL APPLICATION AS EMISSIVE LAYER.. In: Anais do workshop INEO 2023. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2023. Available in: https//www.even3.com.br/anais/workshop-do-ineo-2023/612705-LUMINESCENT-FILMS-BASED-ON-CELLULOSE-ACETATE-BUTYRATE-(CAB)-DOPED-WITH-EUROPIUM-COMPLEX-WITH-POTENTIAL-APPLICATIO. Access in: 18/04/2025