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Luminescent properties of metal–organic frameworks embedded in methacrylated gelatin for its application in biocompatible 3D printable materials

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In this work, nanoparticles of a luminescent metal–organic framework were embedded in a photopolymerized methacrylated gelatin. Steady-state and time-resolved luminescence spectroscopy was used to explore the drying and the photopolymerization processes, as well as the effect the methacrylated gelatin had on the quantum yield and decay time of the nanoparticles. A drying time of 27.5 min was needed for a 20 µL droplet, and the proposed intensity ratio analysis resulted in a minimum irradiation time of 18.6 min, at a lamp intensity of 2.7 W/m2, for the photopolymerization process to end. The presence of the methacrylated gelatin decreased the quantum yield of the nanoparticles and influenced the emission decay time. The intensity ratio showed that a concentration between 1 and 3% w/V of nanoparticles in the solution is required for the luminescence to be observed and to avoid the important quenching effect.

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Authors would like to thank to CONACyT for Cátedra Conacyt projects 232 of Dra. Karla K. Gómez-Lizárraga and 871 (2017) of Dr. Ismael A. Garduño-Wilches, as well as a postdoctorate grant of Dr. Jorge Narro-Ríos. We also thank Secretaría de Investigación y Posgrado del IPN for projects SIP 2021-0986 of Dr. Gilberto Alarcón-Flores and SIP 2021-0108 of Dr. Miguel A. Aguilar-Frutis and Universidad Nacional Autónoma de México for project PAPIIT IT100719 of Dra. Cristina Piña-Barba.

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All authors contributed to the development of this manuscript and approve its publication.

Karla Gómez-Lizárraga: Conceptualization; Data curation; Formal analysis; Investigation; Writing-original draft.

Ismael Garduño-Wilches: Conceptualization; Data curation; Formal analysis; Writing-original draft.

Jorge Narro-Ríos: Data curation; Visualization.

Cristina Piña-Barba: Writing-review and editing; Resources.

Miguel Aguilar-Frutis: Writing-review and editing; Resources.

Gilberto Alarcón-Flores: Project administration; Resources; Writing-original draft.

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Correspondence to Karla Gómez-Lizárraga or Ismael Garduño-Wilches.

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Gómez-Lizárraga, K., Garduño-Wilches, I., Narro-Ríos, J. et al. Luminescent properties of metal–organic frameworks embedded in methacrylated gelatin for its application in biocompatible 3D printable materials. J Nanopart Res 24, 66 (2022).

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