Characterization of polydiacetylene mixed films suitable for colorimetric and resistance based sensors

The present communication introduces a hybrid Polydiacetylene (PDA) network consisting of diacetylene (DA) monomer 10,12-pentacosadyinoic acid (PCDA) and a synthesized DA monomer N-(benzo[d]thiazol-2-yl)pentacosa-10,12-diynamide [poly(I)] using spin coating and Langmuir-Blodgett (LB) technique. The...

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Bibliographic Details
Published in:Hyperfine interactions 2024-11, Vol.245 (1)
Main Authors: Suklabaidya Sudip, Hussain Shazidul, Sarkar Surajit, Majumdar Swapan, Bhattacharjee Debajyoti, Hussain Syed Arshad
Format: Article
Language:English
Subjects:
Absorbance
Colorimetry
Current voltage characteristics
Electrical properties
Electrical resistivity
Langmuir-Blodgett films
Monomers
Morphology
Optical properties
Polydiacetylenes
Pressure
Spin coating
Temperature dependence
Ultraviolet radiation
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Summary:The present communication introduces a hybrid Polydiacetylene (PDA) network consisting of diacetylene (DA) monomer 10,12-pentacosadyinoic acid (PCDA) and a synthesized DA monomer N-(benzo[d]thiazol-2-yl)pentacosa-10,12-diynamide [poly(I)] using spin coating and Langmuir-Blodgett (LB) technique. The study explored various properties of the optimized PDA system, such as structural, morphological, optical, and electrical characteristics, using surface pressure-area (π-A) isotherms, atomic force microscopy (AFM), optical absorbance, and I-V characterization. The presence of modified head groups in the hybrid film strongly affects the optical and electrical properties of film, which result in distinct morphological features like irregularly sized rectangular fragments compared to pure PDAs. Additionally, the optical absorbance and I-V characteristics of the hybrid films exhibited a significant two-step colorimetric transformation (blue-purple-red) when exposed to UV irradiation followed by temperature. The hybrid film also demonstrated enhanced UV-dependent conductivity compared to pure PDA systems (PCDA and poly(I)). As whole, this study presents a modified hybrid PDA system with promising applications in optical and electrical sensing technologies.
ISSN:0304-3843
1572-9540
DOI:10.1007/s10751-024-02207-2