Journal article

Authors list: Wehner, T; Heck, J; Feldmann, C; Müller-Buschbaum, K

Publication year: 2019

Pages: 16630-16638

Journal: Chemistry - A European Journal

Volume number: 25

Issue number: 72

ISSN: 0947-6539

eISSN: 1521-3765

Open access status: Hybrid

DOI Link: https://doi.org/10.1002/chem.201903744

Publisher: Wiley

Abstract: 
The luminescence of the inorganic-organic hybrid nanoparticles ZrO(MFP) (MFP=methylfluorescein phosphate) and ZrO(RP) (RP=resorufin phosphate) was modified by addition of different rare earth halides LnCl(3). The resulting composite materials form dispersible nanoparticles that exhibit modified nanoparticle fluorescence depending on the rare earth ion. The resulting chromaticity of the luminescence is further variable by the employment of different solvents for ZrO(MFP)-based composite systems. The strong solvatochromic effect of the MFP chromophore leads to different luminescence chromaticities of the composite materials between green, yellow, and blue in THF, toluene, and dichloromethane, respectively. The luminescence of ZrO(RP)-based composite particles can be modified between the red and blue spectral regions in dependence on the applied reaction temperature. Beside a luminescence shift that is derived from nanoparticle modification by LnCl(3), a strong turn-on effect of ZrO(RP) particles results after contact with different Bronsted acids and bases in combination with a respective chromaticity shift. Both effects enable the potential employment of such particles as highly sensitive optical pH sensors.

Harvard Citation style: Wehner, T., Heck, J., Feldmann, C. and Müller-Buschbaum, K. (2019) Reactivity of ZrO(MFP) and ZrO(RP) Nanoparticles with LnCl3 for Solvatochromic Luminescence Modification and pH-Dependent Optical Sensing, Chemistry - A European Journal, 25(72), pp. 16630-16638. https://doi.org/10.1002/chem.201903744

APA Citation style: Wehner, T., Heck, J., Feldmann, C., & Müller-Buschbaum, K. (2019). Reactivity of ZrO(MFP) and ZrO(RP) Nanoparticles with LnCl3 for Solvatochromic Luminescence Modification and pH-Dependent Optical Sensing. Chemistry - A European Journal. 25(72), 16630-16638. https://doi.org/10.1002/chem.201903744