Three multifunctional coordination polymers based on viologen: photochromic/thermochromic properties, ammonia vapor sensing and applications

Key Points

• Photochromic and thermochromic properties are reported in coordination polymers made from viologen, enhancing multifunctionality.
• Key evidence shows a significant response to ammonia vapor exposure, indicating effective sensing capabilities.
• The observational analysis focused on coordination polymers and integrated photonic properties to assess various functionalities.
• These findings support the development of advanced materials, suggesting their use in environmental monitoring and smart sensors.