Donor-π-Acceptor Polymer with Alternating Triarylborane and Triphenylamine Moieties

Area of Science:

• Polymer Chemistry
• Materials Science
• Organic Electronics

Background:

• Development of functional polymers with tailored electronic properties is crucial for advanced applications.
• Donor-π-acceptor (D-π-A) polymers offer tunable optoelectronic characteristics.
• Incorporating diverse functional groups into polymer backbones can lead to unique behaviors.

Purpose of the Study:

• To synthesize and characterize a novel luminescent main chain donor-π-acceptor-type polymer.
• To investigate the electrochemical and photophysical properties of the synthesized polymer.
• To explore the polymer's potential for selective ion sensing.

Main Methods:

• Organometallic polycondensation reaction for polymer synthesis.
• Post-modification of the polymer backbone.
• Electrochemical characterization (cyclic voltammetry).
• Spectroscopic analysis (emission spectra, solvatochromism).
• Complexation studies and quantitative titration for ion binding.

Main Results:

• A luminescent D-π-A polymer (4) was successfully prepared.
• The polymer demonstrated ambipolar behavior, with moderate oxidation and reduction potentials.
• Strong solvatochromic effects were observed in the emission spectra.
• Selective binding to fluoride and cyanide ions was confirmed.
• A two-step binding process was identified for cyanide complexation.

Conclusions:

• The synthesized polymer exhibits promising ambipolar electronic properties.
• The polymer's luminescence and solvatochromism suggest potential in optical applications.
• The selective ion-binding capability highlights its utility as a chemical sensor for fluoride and cyanide.