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A photochromic sensor microchip for high-performance multiplex metal ions detection.

Huang Y, Li F, Ye C, Qin M, Ran W, Song Y - Sci Rep (2015)

Bottom Line: It is expected to develop new principles and techniques to achieve high-performance multi-analytes testing with facile sensors.The multi-testing sensor array performed in dark, ultraviolet or visual stimulation, corresponding to different molecular states of spirooxazine metal ions coordination.The facile photochromic microchip contributes a multi-states array sensing method, and will open new opportunities for the development of advanced discriminant analysis for complex analytes.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences.

ABSTRACT
Current multi-analytes chips are limited with requiring numbers of sensors, complex synthesis and compounds screen. It is expected to develop new principles and techniques to achieve high-performance multi-analytes testing with facile sensors. Here, we investigated the correlative multi-states properties of a photochromic sensor (spirooxazine), which is capable of a selective and cross-reactive sensor array for discriminated multi-analytes (11 metal ions) detection by just one sensing compound. The multi-testing sensor array performed in dark, ultraviolet or visual stimulation, corresponding to different molecular states of spirooxazine metal ions coordination. The facile photochromic microchip contributes a multi-states array sensing method, and will open new opportunities for the development of advanced discriminant analysis for complex analytes.

No MeSH data available.


The fluorescence of spirooxazine response to various metal ions with different light irradiations.The typical fluorescent spectra of spirooxazine in ethanol (1.0 mM) response with Al3+, Co2+, Cu2+, Zn2+ (1.0 mM) in dark, after UV-light or Vis-light irradiation, respectively.
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f3: The fluorescence of spirooxazine response to various metal ions with different light irradiations.The typical fluorescent spectra of spirooxazine in ethanol (1.0 mM) response with Al3+, Co2+, Cu2+, Zn2+ (1.0 mM) in dark, after UV-light or Vis-light irradiation, respectively.

Mentions: Fig. 3 displays the typical fluorescence spectra of spirooxazine in ethanol (1.0 mM) response with metal ions in different light-stimulations. Spirooxazine combining with Al3+ has obvious fluorescence increasement, ultraviolet (UV) light irradiation grows the 533 nm fluorescence and visible (Vis) light irradiation drastically increases the fluorescent peak of 435 nm. In the case of spirooxazine response with Co2+, Vis light stimulation increases the peaks of 435 and 533 nm of the fluorescent spectra. Cu2+ has the strong coordinating ability with spirooxazine/spiropyran and results in the closed form ring-open. The spirooxazine-Cu2+ coordination generates a medium fluorescence. UV and Vis irradiation further enhance the fluorescence at 533 nm. Spirooxazine-Zn2+ coordination dose not contribute the obvious fluorescence when prime stain and UV irradiation. The electron transfer from Zn2+ to organic ligand under Vis irradiation contributes a weak fluorescence emission. The change of fluorescence spectra of spirooxazine combined with Al3+, Co2+, Cu2+, Zn2+ under dark, UV and Vis irradiation are focus at the wavelength of 435 nm and 533 nm because of the light stimulations induce the merocyanine of the spirooxazine-metallic coordinations partly convert to open or closed form. Furthermore, when this sensing system was adopted in cross-reactive array sensing, fluorescent signals were collected in the same condition at the same time, which will avoid error from excitation light source glint, detector fatigue. Accurate chemical difference was present in this sensing array system. The phenomena that spirooxazine-metallic coordinations reveal various fluorescent spectra in different light stimulations demonstrate the sensing molecular spirooxazine can provide multiple fluorescent signals, which will contribute to the photochromic sensor microchip selective and cross-reactive testing.


A photochromic sensor microchip for high-performance multiplex metal ions detection.

Huang Y, Li F, Ye C, Qin M, Ran W, Song Y - Sci Rep (2015)

The fluorescence of spirooxazine response to various metal ions with different light irradiations.The typical fluorescent spectra of spirooxazine in ethanol (1.0 mM) response with Al3+, Co2+, Cu2+, Zn2+ (1.0 mM) in dark, after UV-light or Vis-light irradiation, respectively.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4389811&req=5

f3: The fluorescence of spirooxazine response to various metal ions with different light irradiations.The typical fluorescent spectra of spirooxazine in ethanol (1.0 mM) response with Al3+, Co2+, Cu2+, Zn2+ (1.0 mM) in dark, after UV-light or Vis-light irradiation, respectively.
Mentions: Fig. 3 displays the typical fluorescence spectra of spirooxazine in ethanol (1.0 mM) response with metal ions in different light-stimulations. Spirooxazine combining with Al3+ has obvious fluorescence increasement, ultraviolet (UV) light irradiation grows the 533 nm fluorescence and visible (Vis) light irradiation drastically increases the fluorescent peak of 435 nm. In the case of spirooxazine response with Co2+, Vis light stimulation increases the peaks of 435 and 533 nm of the fluorescent spectra. Cu2+ has the strong coordinating ability with spirooxazine/spiropyran and results in the closed form ring-open. The spirooxazine-Cu2+ coordination generates a medium fluorescence. UV and Vis irradiation further enhance the fluorescence at 533 nm. Spirooxazine-Zn2+ coordination dose not contribute the obvious fluorescence when prime stain and UV irradiation. The electron transfer from Zn2+ to organic ligand under Vis irradiation contributes a weak fluorescence emission. The change of fluorescence spectra of spirooxazine combined with Al3+, Co2+, Cu2+, Zn2+ under dark, UV and Vis irradiation are focus at the wavelength of 435 nm and 533 nm because of the light stimulations induce the merocyanine of the spirooxazine-metallic coordinations partly convert to open or closed form. Furthermore, when this sensing system was adopted in cross-reactive array sensing, fluorescent signals were collected in the same condition at the same time, which will avoid error from excitation light source glint, detector fatigue. Accurate chemical difference was present in this sensing array system. The phenomena that spirooxazine-metallic coordinations reveal various fluorescent spectra in different light stimulations demonstrate the sensing molecular spirooxazine can provide multiple fluorescent signals, which will contribute to the photochromic sensor microchip selective and cross-reactive testing.

Bottom Line: It is expected to develop new principles and techniques to achieve high-performance multi-analytes testing with facile sensors.The multi-testing sensor array performed in dark, ultraviolet or visual stimulation, corresponding to different molecular states of spirooxazine metal ions coordination.The facile photochromic microchip contributes a multi-states array sensing method, and will open new opportunities for the development of advanced discriminant analysis for complex analytes.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences.

ABSTRACT
Current multi-analytes chips are limited with requiring numbers of sensors, complex synthesis and compounds screen. It is expected to develop new principles and techniques to achieve high-performance multi-analytes testing with facile sensors. Here, we investigated the correlative multi-states properties of a photochromic sensor (spirooxazine), which is capable of a selective and cross-reactive sensor array for discriminated multi-analytes (11 metal ions) detection by just one sensing compound. The multi-testing sensor array performed in dark, ultraviolet or visual stimulation, corresponding to different molecular states of spirooxazine metal ions coordination. The facile photochromic microchip contributes a multi-states array sensing method, and will open new opportunities for the development of advanced discriminant analysis for complex analytes.

No MeSH data available.