Rational structural design of aromatic Azo photoactive small molecules for biomedical applications

Area of Science:

• Organic Chemistry
• Photochemistry
• Biomedical Engineering

Background:

• Aromatic Azo molecules, including azobenzenes and heteroaryl Azo derivatives, function as effective photoactive switches.
• Despite extensive research, their full potential in biomedical applications remains largely untapped.

Purpose of the Study:

• To systematically review structural design strategies for tuning aromatic Azo photophysical properties.
• To summarize synthetic methods and isomerization mechanisms of Azo derivatives.
• To highlight recent advances in biomedical applications and discuss clinical translation challenges.

Main Methods:

• Review of structural design strategies (substituent engineering, π-conjugation modulation).
• Summary of synthetic methodologies for multifunctional Azo frameworks.
• Analysis of isomerization mechanisms and biomedical applications.

Main Results:

• Detailed outline of structure-property relationships for aromatic Azo molecules.
• Overview of state-of-the-art synthetic routes and isomerization behaviors.
• Compilation of diverse biomedical applications, including imaging, drug delivery, and phototherapy.

Conclusions:

• Aromatic Azo molecules offer significant potential for biomedical applications.
• Addressing clinical translation challenges is crucial for realizing their full impact.
• This review provides a roadmap for advancing Azo-based photoactive small molecules in medicine.