Solvatochromic, thermochromic and pH-sensory DCDHF-hydrazone molecular switch: Response to alkaline analytes

Tawfik A. Khattab; Brylee David B. Tiu; Sonya Adas; Scott D. Bunge; Rigoberto C. Advincula

doi:10.1039/c6ra24113a

Solvatochromic, thermochromic and pH-sensory DCDHF-hydrazone molecular switch: Response to alkaline analytes

Tawfik A. Khattab, Brylee David B. Tiu, Sonya Adas, Scott D. Bunge, Rigoberto C. Advincula

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

Multi-stimuli responsive DCDHF-hydrazone molecular switch containing a hydrazone recognition moiety is developed for the naked-eye detection of alkaline analytes in both vapour and aqueous media. Mechanisms accounting for the thermochromism, pH-sensitivity and solvatochromism are proposed. DCDHF-hydrazone chromophores of different substituents introduced nanostructures with different morphologies via a re-precipitation technique. The films formulated from these nanostructures function as solid-state vapochromic sensors for probing alkaline vapours such as amines and ammonia. The sensing performance is reversible and has differential sensitivity towards a variety of amines at comparable concentrations. The structure of the hydrazone molecular switch was established spectroscopically and by single crystal X-ray crystallography.

Original language	English
Pages (from-to)	102296-102305
Number of pages	10
Journal	RSC Advances
Volume	6
Issue number	104
DOIs	https://doi.org/10.1039/c6ra24113a
Publication status	Published - 2016 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

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abstract = "Multi-stimuli responsive DCDHF-hydrazone molecular switch containing a hydrazone recognition moiety is developed for the naked-eye detection of alkaline analytes in both vapour and aqueous media. Mechanisms accounting for the thermochromism, pH-sensitivity and solvatochromism are proposed. DCDHF-hydrazone chromophores of different substituents introduced nanostructures with different morphologies via a re-precipitation technique. The films formulated from these nanostructures function as solid-state vapochromic sensors for probing alkaline vapours such as amines and ammonia. The sensing performance is reversible and has differential sensitivity towards a variety of amines at comparable concentrations. The structure of the hydrazone molecular switch was established spectroscopically and by single crystal X-ray crystallography.",

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AU - Tiu, Brylee David B.

AU - Adas, Sonya

AU - Bunge, Scott D.

AU - Advincula, Rigoberto C.

PY - 2016/1/1

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AB - Multi-stimuli responsive DCDHF-hydrazone molecular switch containing a hydrazone recognition moiety is developed for the naked-eye detection of alkaline analytes in both vapour and aqueous media. Mechanisms accounting for the thermochromism, pH-sensitivity and solvatochromism are proposed. DCDHF-hydrazone chromophores of different substituents introduced nanostructures with different morphologies via a re-precipitation technique. The films formulated from these nanostructures function as solid-state vapochromic sensors for probing alkaline vapours such as amines and ammonia. The sensing performance is reversible and has differential sensitivity towards a variety of amines at comparable concentrations. The structure of the hydrazone molecular switch was established spectroscopically and by single crystal X-ray crystallography.

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Solvatochromic, thermochromic and pH-sensory DCDHF-hydrazone molecular switch: Response to alkaline analytes

Abstract

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