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Luminescent Mixed-Crystal Ln-MOF Thin Film for the Recognition and Detection of Pharmaceuticals

Gao, Yanxin and Yu, Gang and Liu, Kai and Wang, Bin (2018) Luminescent Mixed-Crystal Ln-MOF Thin Film for the Recognition and Detection of Pharmaceuticals. Sensors and Actuators B: Chemical, 257 . pp. 931-935. ISSN 0925-4005.

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The development of simple and reliable methods for recognition and detection of pharmaceuticals has been a matter of great concern. In this work, a series of mixed-crystal lanthanide metal-organic frameworks (Ln-MOFs) were synthesized by solvothermal method. Among them, MLMOF-3 was selected and fabricated to form nanoscale crystals and prepare luminescent Ln-MOF thin film. The different changes of emission intensity ratio of ^5D_0 → ^7F_2 (Eu^(3+), 619 nm) to ^5D_4 → ^7F_5 (Tb^(3+), 547 nm) transitions depending on the guest molecules enabled MLMOF-3 film to recognize different pharmaceutical molecules. Moreover, the intensity ratio was observed to linearly correlate to the concentration of pharmaceuticals. Compared to the traditional absolute emission intensity method based on single lanthanide ions, mixed-crystal Ln-MOF thin film generated more stable and accurate luminescent signals, which is an excellent candidate of self-referencing and self-calibrating luminescent sensor for various applications.

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Additional Information:© 2017 Elsevier B.V. Received 5 June 2017, Revised 28 October 2017, Accepted 30 October 2017, Available online 31 October 2017.
Subject Keywords:Ln-MOFs; thin film; recognition; detection; pharmaceuticals
Record Number:CaltechAUTHORS:20171101-134048270
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Official Citation:Yanxin Gao, Gang Yu, Kai Liu, Bin Wang, Luminescent mixed-crystal Ln-MOF thin film for the recognition and detection of pharmaceuticals, In Sensors and Actuators B: Chemical, Volume 257, 2018, Pages 931-935, ISSN 0925-4005, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:82840
Deposited By: Tony Diaz
Deposited On:01 Nov 2017 23:00
Last Modified:18 Dec 2017 17:00

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