Polymorphism induced gas adsorption on naphthalic imide appended phenothiazine for the detection of volatile organic compounds

[Display omitted] •A new polymorphic phase of NIPTZ-DM is reported.•The crystal lattice show Zig-Zig supramolecular arrangement.•NIPTZ-DM demonstrated excellent gas response towards acetone and TEA.•NIPTZ-DM d show high photo response under light with n-type behaviour.•NIPTZ-C exhibits p-type and n-...

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Bibliographic Details
Published in:Materials letters 2021-11, Vol.303, p.130471, Article 130471
Main Authors: Selvaraj, Kasthuri, Marappan, Gobinath, Gawas, Pratiksha, Raviteja, S., Dinesh Kumar, G., Jayaraman Surya, Velappa, Sivalingam, Yuvaraj, Nutalapati, Venkatramaiah
Format: Article
Language:English
Subjects:
Acetone
Ethanol
Gas adsorption
Hexanes
Materials science
Polymorphism
Scanning Kelvin Probe (SKP)
Single crystals
Triethylamine
Ultraviolet radiation
VOCs
Volatile organic compounds
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Summary:[Display omitted] •A new polymorphic phase of NIPTZ-DM is reported.•The crystal lattice show Zig-Zig supramolecular arrangement.•NIPTZ-DM demonstrated excellent gas response towards acetone and TEA.•NIPTZ-DM d show high photo response under light with n-type behaviour.•NIPTZ-C exhibits p-type and n-type behaviour and good response to ethanol vapours. In this work, we have developed a new polymorphic phase of 2-(4-(10H-phenothiazin-10-yl)phenyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione(NIPTZ-DM) and compared it with the reported polymeric phase (NIPTZ-C). Single crystal XRD analysis revealed that NIPTZ-C existed in herringbone molecular arrangement and NIPTZ-DM showed a zigzag pattern. The photophysical properties of the two phases in the solid state were explored. The unique crystalline phases were investigated for photo- response behaviour with saturated vapours of volatile organic compounds (VOCs). The gas interaction study was carried with Scanning Kelvin Probe (SKP) system with different VOCs such as acetone, triethylamine (TEA), ethanol, and n-hexane. NIPTZ-DM demonstrated excellent gas response towards acetone vapours and showed a high photo response behaviour. NIPTZ-C exhibits both p-type and n-type behaviour, whereas NIPTZ-DM exhibits only n-type behaviour under UV-light illumination.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2021.130471