Polyaniline nanofibres for fluorescent nucleic acid detection

Area of Science:

• Biotechnology
• Materials Science
• Analytical Chemistry

Background:

• Nucleic acid detection is crucial for diagnostics and research.
• Existing methods often face challenges with sensitivity and specificity.
• Fluorescent sensing offers a promising avenue for nucleic acid analysis.

Purpose of the Study:

• To introduce conducting polymer polyaniline (PANI) nanofibres as a novel platform for nucleic acid detection.
• To evaluate the fluorescent properties of PANI nanofibres for sensing applications.
• To demonstrate the high selectivity of the PANI nanofibre platform for nucleic acid detection, including single-base mismatch identification.

Main Methods:

• Synthesis and characterization of polyaniline (PANI) nanofibres.
• Development of a fluorescent sensing assay utilizing PANI nanofibres for nucleic acid detection.
• Testing the selectivity of the PANI nanofibre sensor using DNA targets with varying degrees of complementarity, including single-base mismatches.

Main Results:

• Polyaniline (PANI) nanofibres exhibit intrinsic fluorescence suitable for sensing applications.
• The PANI nanofibre platform demonstrates sensitive detection of nucleic acids.
• The sensor achieves high selectivity, accurately distinguishing between perfectly matched and single-base mismatched nucleic acid sequences.

Conclusions:

• Conducting polymer polyaniline (PANI) nanofibres represent a novel and effective fluorescent sensing platform for nucleic acid detection.
• The PANI nanofibre sensor offers high selectivity, enabling the identification of single-base mismatches.
• This technology holds potential for advanced molecular diagnostics and genetic analysis.