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通过特定任务离子液体制备多功能镧系掺杂二元氟化物与氧化石墨烯纳米复合材料

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

作者信息

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

机构信息

Department of Chemistry, Dr. H.S. Gour University (A Central University), Sagar 470003, Madhya Pradesh, India.

Department of Chemistry, Government Shyam Sundar Agrawal PG College, Sihora, Jabalpur 483225, Madhya Pradesh India.

出版信息

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

DOI:10.1021/acsomega.1c06875
PMID:35647428
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9134252/
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 [Cmim][BF], 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 Ce is higher-energy shifted when GO is attached. In addition, magnetic properties of GdF:Tb nanoparticles (NPs) and GdF:Tb-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 at 300 K and 184.449 emu g 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.

摘要

基于氧化石墨烯的纳米复合材料（NCMs）展现出多样的光子学和生物光子学应用。使用特定任务离子液体（IL），即1-丁基-3-甲基四氟硼酸盐[Cmim][BF]进行的创新纳米工程，使人们能够获得一类独特的发光纳米复合材料，这类材料由掺杂镧系元素的二元氟化物与氧化石墨烯（GO）形成。在此，离子液体用作溶剂、模板剂以及纳米复合材料合成的反应伙伴，即“三合一”。我们的研究表明，GO控制着NCMs的尺寸；然而，它也能调节发光特性。例如，当附着GO时，Ce的激发光谱会发生高能位移。此外，还在室温（300 K）和极低温（2 K）下研究了GdF:Tb纳米颗粒（NPs）和GdF:Tb-GO NCMs的磁性。NPs（例如，在+50至-50 kOe的外加磁场中，300 K时为6.676 emu g，2 K时为184.449 emu g）和NCMs的高磁化强度表明它们有望用于包括磁共振成像等许多光子学和双光子学应用中。

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