Phosphorescent thymidine triphosphate sensor based on a donor-acceptor ensemble system using intermolecular energy...

Area of Science:

• Supramolecular Chemistry
• Analytical Chemistry
• Biophysical Chemistry

Background:

• Nucleotide detection is crucial in biological and medical diagnostics.
• Existing methods for nucleotide quantification can be complex or lack specificity.
• Development of selective and sensitive biosensors is an ongoing research area.

Purpose of the Study:

• To develop an ensemble sensor system for selective detection of thymidine 5 omino-triphosphate (TTP).
• To investigate the mechanism of selective luminescence enhancement upon TTP binding.
• To utilize supramolecular interactions and energy transfer for sensing applications.

Main Methods:

• Construction of an ensemble sensor system with an energy donor (mCP-Zn2+-cyclen) and an energy acceptor (FIrpic derivative).
• Evaluation of the sensor's response to various nucleotides in HEPES buffer.
• Analysis of binding interactions and luminescence properties using spectroscopic techniques.

Main Results:

• The ensemble sensor system demonstrated selective luminescence enhancement in the presence of TTP compared to other nucleotides.
• Strong binding affinity between the thymine unit of TTP and the Zn2+-cyclen component was observed.
• Efficient intermolecular energy transfer between the mCP donor and FIrpic acceptor facilitated luminescence enhancement.

Conclusions:

• The developed ensemble sensor system offers a selective and sensitive method for TTP detection.
• The combination of specific molecular recognition and energy transfer is effective for nucleotide sensing.
• This approach holds potential for developing advanced diagnostic tools for nucleotide analysis.