Issue 24, 2012

Luminescent ultrathin film of anionic styrylbiphenyl derivative–layered double hydroxide and its reversible sensing for heavy metal ions

Abstract

Ordered ultrathin films (UTFs) with blue luminescence based on a styrylbiphenyl derivative (BTBS) and Mg–Al-layered double hydroxide (LDH) nanosheets have been constructed employing the layer-by-layer assembly technique. UV-visible absorption and fluorescence spectroscopy showed a stepwise and regular growth of the films upon increasing the number of deposition cycles. XRD, AFM and SEM indicated that the films possess a periodic layered structure with a period of ca. 1.5 nm, and uniform surface morphology. The film thickness can be precisely controlled in the range ca. 15–53 nm. The BTBS–LDH UTFs exhibit improved UV-light resistance capability compared with the pristine BTBS and show well-defined polarized photoemission, with anisotropy of ca. 0.24. The UTFs show a fast, selective and reversible luminescent response to aqueous solutions containing different heavy metal ions, with the most significant luminescent quenching occurring for the Hg2+ solution, shedding light on the fact that these films can serve as a new type of selective solid luminescent metal-ion sensor.

Graphical abstract: Luminescent ultrathin film of anionic styrylbiphenyl derivative–layered double hydroxide and its reversible sensing for heavy metal ions

Supplementary files

Article information

Article type
Paper
Submitted
05 Feb 2012
Accepted
20 Mar 2012
First published
20 Mar 2012

Phys. Chem. Chem. Phys., 2012,14, 8591-8598

Luminescent ultrathin film of anionic styrylbiphenyl derivative–layered double hydroxide and its reversible sensing for heavy metal ions

D. Yan, J. Lu, M. Wei, S. Li, D. G. Evans and X. Duan, Phys. Chem. Chem. Phys., 2012, 14, 8591 DOI: 10.1039/C2CP40350A

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