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A selective fluoride sensor and a digital processor with "Write-Read-Erase-Read" behaviour.

Basant Kumar¹, Masood Ayoub Kaloo, Adiki Raja Sekhar

¹Indian Institute of Science Education and Research Bhopal, Bhouri, Indore-bypass, Bhopal, 462030, India. sankar@iiserb.ac.in.

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|September 19, 2014

Summary

This summary is machine-generated.

A novel Schiff base acts as a selective colorimetric sensor for fluoride detection by modulating intramolecular charge transfer (ICT). This sensor also exhibits reversible dual-ion binding for advanced logic operations and data storage mimicry.

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Area of Science:

Chemical Sensing
Supramolecular Chemistry
Materials Science

Background:

Schiff bases are versatile organic compounds with applications in sensing.
Fluoride detection is crucial in environmental and biological monitoring.
Intramolecular charge transfer (ICT) is a key mechanism in optical sensing.

Purpose of the Study:

To develop an easy-to-synthesize Schiff base for selective and colorimetric fluoride sensing.
To investigate the dual-ion binding properties and reversibility of the Schiff base.
To explore its potential for implementing molecular logic gates and data storage.

Main Methods:

Synthesis of a novel Schiff base.
Spectrophotometric analysis for fluoride sensing.
Investigation of binding properties and reversibility using spectroscopic techniques.
Demonstration of logic functions (YES, NOR, INH) and a "Write-Read-Erase-Read" mimic.

Main Results:

The Schiff base demonstrated selective and colorimetric response to fluoride ions.
Modulation of ICT was observed upon fluoride binding, leading to a distinct color change.
The sensor exhibited reversible dual-ion binding capabilities.
Successful implementation of YES, NOR, and INH logic gates and a "Write-Read-Erase-Read" memory device.

Conclusions:

A facilely synthesized Schiff base serves as an effective colorimetric sensor for fluoride.
The sensor's ICT modulation and reversible dual-ion binding enable sophisticated molecular logic operations.
This work presents a promising platform for developing advanced chemical sensors and molecular devices.