Issue 17, 2015

Study of the one-photon and two-photon properties of two water-soluble terpyridines and their zinc complexes

Abstract

Two water soluble 2,2′:6′,2′′-terpyridine derivatives (TPYOH and O3TPY) with a di(hydroxyethyl)amino or a long (2-(2-methoxyethoxy)ethoxy)benzyl group, respectively, were designed and synthesized. The two terpyridine ligands and their Zn(II) complexes display strong one-photon fluorescence. An unusually large solvatochromism effect in ethanol and water was found, which was ascribed to their interactions with the solvent through hydrogen bonds. All the four compounds show evident two-photon absorption ability when evaluated by Z-scan technology. The free ligands could give distinct two-photon excited fluorescence, and the emission of O3TPY responded linearly with Zn2+ under the excitation of a 780 nm femtosecond laser. Only the complex ZnO3TPY, which possesses a large π conjugation system and suitable election-donating groups, displayed emission maxima at 595 nm when excited by a 680–880 nm laser.

Graphical abstract: Study of the one-photon and two-photon properties of two water-soluble terpyridines and their zinc complexes

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
01 Feb 2015
Accepted
19 Mar 2015
First published
19 Mar 2015

Dalton Trans., 2015,44, 8041-8048

Author version available

Study of the one-photon and two-photon properties of two water-soluble terpyridines and their zinc complexes

P. Shi, Q. Jiang, X. Zhao, Q. Zhang and Y. Tian, Dalton Trans., 2015, 44, 8041 DOI: 10.1039/C5DT00449G

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