Carbon dot-phthalocyanine hybrids: synergistic effects that boost their multifaceted applications

Since their discovery, carbon dots (CDs) have been extensively studied for their potential in diverse applications owing to their unique properties such as high biocompatibility, excellent water solubility, low toxicity, minimal photobleaching, and exceptional chemical versatility. These characteristics position CDs as promising candidates for overcoming the limitations of various molecular compounds. This review provides a comprehensive analysis of the synergistic effects arising from the integration of CDs and phthalocyanines (Pcs) to form hybrids with distinct photophysical and photochemical properties. This study explores recent advances in the development of Pc@CD hybrids, focusing on their synthesis, conjugation strategies, and synergistic effects that impact their performance in several areas, including optical sensing, electrocatalysis, photodynamic processes and photocatalysis. Emphasis is given to chemical methods that enable efficient conjugation and the role of the generation of reactive oxygen species in driving these applications. Additionally, the discussion also addresses key challenges, highlighting innovative solutions and proposing future research directions to fully harness the potential of Pc@CD hybrids in diverse scientific and technological breakthroughs.