Issue 20, 2020

Fluorometric detection of iodine by MIL-53(Al)-TDC

Abstract

The fluorescent properties of MIL-53(Al)-TDC are drastically changed due to the presence of iodine, even in small quantities, as a result of an energy transfer process from the host material (MIL-53(Al)-TDC) to the guest molecule (I2). While MIL-53(Al)-TDC's emission spectrum shows a weak and broad band, after I2 adsorption, it exhibits well-resolved and long-lasting emission lines, which could be exploited for iodine detection. Density Functional Theory periodical calculations demonstrated that in the most stable MIL-53(Al)-TDC⋯I2 configuration, the I2 molecule is bonded mainly by an O–H⋯I hydrogen bond. The QTAIM showed that other non-covalent interactions also provided stability to MIL-53(Al)-TDC⋯I2. The electrostatic potential analysis indicated that the I2 molecule adsorption occurs by a combination of specific interactions with a strong electrostatic contribution and weak interactions. These results postulate fluorescent MIL-53(Al)-TDC as an efficient I2 detector (potentially for radioactive I2), using a simple fluorimetric test.

Graphical abstract: Fluorometric detection of iodine by MIL-53(Al)-TDC

Supplementary files

Article information

Article type
Communication
Submitted
13 mrt 2020
Accepted
14 apr 2020
First published
14 apr 2020

Dalton Trans., 2020,49, 6572-6577

Fluorometric detection of iodine by MIL-53(Al)-TDC

M. L. Díaz-Ramírez, B. Vargas, J. Raziel Álvarez, B. Landeros-Rivera, M. Rivera-Almazo, C. Ramos, J. Gabriel Flores, E. Morales, R. Vargas, J. Garza, E. González-Zamora, A. Martínez, D. Solís-Ibarra and I. A. Ibarra, Dalton Trans., 2020, 49, 6572 DOI: 10.1039/D0DT00945H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements