Multifunctional Lanthanide-Doped Binary Fluorides and Graphene Oxide Nanocomposites Via a Task-Specific Ionic Liquid

Rahul Kumar Sharma; Madhubrata Ghora; Yogendra N Chouryal; Trisit Ganguly; Debopam Acharjee; Dibya Jyoti Mondal; Sanjit Konar; Sandeep Nigam; Pushpal Ghosh

doi:10.1021/acsomega.1c06875

Multifunctional Lanthanide-Doped Binary Fluorides and Graphene Oxide Nanocomposites Via a Task-Specific Ionic Liquid

ACS Omega. 2022 May 11;7(20):16906-16916. doi: 10.1021/acsomega.1c06875. eCollection 2022 May 24.

Authors

Rahul Kumar Sharma^{1

2}, Madhubrata Ghora¹, Yogendra N Chouryal¹, Trisit Ganguly¹, Debopam Acharjee¹, Dibya Jyoti Mondal³, Sanjit Konar³, Sandeep Nigam⁴, Pushpal Ghosh¹

Affiliations

¹ Department of Chemistry, Dr. H.S. Gour University (A Central University), Sagar 470003, Madhya Pradesh, India.
² Department of Chemistry, Government Shyam Sundar Agrawal PG College, Sihora, Jabalpur 483225, Madhya Pradesh India.
³ Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh India.
⁴ Chemistry Division, Bhabha Atomic Research Centre, Trombay 400085, Mumbai, India.

Abstract

Graphene oxide-based nanocomposites (NCMs) exhibit diverse photonic and biophotonic applications. Innovative nanoengineering using a task-specific ionic liquid (IL), namely, 1-butyl-3-methyl tetrafluoroborate [C₄mim][BF₄], allows one to access a unique class of luminescent nanocomposites formed between lanthanide-doped binary fluorides and graphene oxide (GO). Here the IL is used as a solvent, templating agent, and as a reaction partner for the nanocomposite synthesis, that is, "all three in one". Our study shows that GO controls the size of the NCMs; however, it can tune the luminescence properties too. For example, the excitation spectrum of Ce³⁺ is higher-energy shifted when GO is attached. In addition, magnetic properties of GdF₃:Tb³⁺ nanoparticles (NPs) and GdF₃:Tb³⁺-GO NCMs are also studied at room temperature (300 K) and very low temperature (2 K). High magnetization results for the NPs (e.g., 6.676 emu g^-1 at 300 K and 184.449 emu g^-1 at 2 K in the applied magnetic field from +50 to -50 kOe) and NCMs promises their uses in many photonic and biphotonic applications including magnetic resonance imaging, etc.