Carbon dot-embedded hybrid microgels: A new frontier in functional soft materials

Carbon dot (CD)-incorporated hybrid microgels are emerging as advanced materials in the field of nanotechnology owing to their excellent potential in biomedical, environmental remediation, sensing and bioimaging applications. This review explores the integration of CDs within the polymeric microgel matrices, highlighting how CDs impart exceptional optical and biocompatible properties to create highly versatile, responsive and multifunctional hybrid microgels. A wide range of chemical and natural precursors can be utilized for the synthesis of CDs, complemented by diverse methodologies for fabricating hybrid microgels, including both innovative and traditional synthesis techniques. Detailed discussions on various characterization methods, ranging from spectroscopic and microscopic analyses to dynamic light scattering and zeta potential measurements, provide a comprehensive framework for understanding the structure, functionality, and performance of these materials. Key applications, such as precision drug delivery, real-time bioimaging, and environmental remediation are explored, underscoring the potential of these smart materials in driving resilient, sustainable technological innovations. By providing a thorough overview of current advancements and challenges, this review is intended to provide insights to researchers to inspire further research and propel the development of next-generation hybrid systems for practical, real-world applications.