First example of solid-state luminescent borasiloxane-based chiral helices assembled through N-B bonds

Area of Science:

• Materials Science
• Supramolecular Chemistry
• Organic Chemistry

Background:

• Borasiloxanes are versatile silicon-oxygen compounds with tunable properties.
• Chiral structures are crucial in various fields, including asymmetric synthesis and molecular recognition.
• Luminescent materials are essential for applications in sensing, imaging, and optoelectronics.

Purpose of the Study:

• To synthesize and characterize the first example of luminescent borasiloxane-based chiral helices.
• To investigate the formation of N-B bonds in these helical structures.
• To understand the electronic and structural properties of the novel helical compounds.

Main Methods:

• Reaction of substituted borasiloxanes with 2,5-bis(3-pyridylethynyl)thiophene.
• Full characterization of starting materials and resulting helical structures using spectroscopic and analytical techniques.
• Theoretical calculations to rationalize the nature of the N-B bond and electronic properties.

Main Results:

• Successful synthesis of luminescent borasiloxane-based chiral helices.
• Confirmation of N-B bond formation as the key linkage in the helical structures.
• Detailed characterization revealing the structural and photophysical properties of the helices.

Conclusions:

• The study reports the first luminescent borasiloxane-based chiral helices stabilized by N-B bonds.
• The findings provide new insights into the construction of complex helical architectures using organoboron chemistry.
• This work opens avenues for designing novel luminescent chiral materials with potential applications in advanced technologies.