Partha Sarathi Roy
A versatile family of functional soft materials with a wide range of applications, electrostatically coassembled micelles forms when neutral, hydrophilic coronas in aqueous solution are microphase-separated from a core containing related polycations and polyanions. Because of their hydrated state and structural and chemical adaptability, complex coacervate core micelles (C3Ms) are a desirable solution for distribution and basic research on polymer physics. Fundamental structure-property relationships can be established by utilizing block copolymer design with controlled self-assembly to precisely tune the size, morphology, and stability of C3Ms in pursuit of tailored nanocarriers that ultimately provide active ingredient storage, protection, transport, and delivery. The chemical structure and physical characteristics of the micellar building blocks, such as charge density, block length (ratio), and hydrophobicity, have a significant impact on the nanostructures that result from the mixing of specific oppositely charged block copolymers (BCPs) and other ionic species. The structure and characteristics of the steady-state association colloids have been significantly clarified by over thirty years of research since the discovery of this novel class of polymer micelles. Dynamics and out-of-equilibrium processes have been receiving increasing attention. Examples of these processes include reaction-assembly networks, (dis)assembly pathways, and the exchange kinetics of the micellar constituents. I anticipate that the expanded scope will aid in the planning and design of hitherto unachievable buildings with emergent features and functions. The process of BCPs self-assembly in solution has been the subject of extensive scientific investigation for a number of years because of the remarkable variety of morphologies and achievable complexity of the resulting nanoassemblies, which include vesicles, lamellae, spheres, cylinders, and many other complex, bicontinuous, or even hierarchical structures. A vast array of macromolecules with different chemical compositions, structures, characteristics, and properties are now accessible due to the ever-improving sophistication of synthetic chemistry methodologies and procedures. These diverse properties have thus given rise to an abundance of fascinating self-organized polymeric nanostructures, offering a multitude of potential uses in various nanotechnological domains associated with physics, chemistry, material science, nanomedicine, and biomaterials. Here, I provide a summary of the current hypotheses on block polymer micelles. I discuss in brief the association behavior of triblock terpolymer and concentrate on the equilibrium structure of nanoaggregates generated by solvophobic/solvophilic diblock copolymers in a diluted solution. I present several difficult issues for theoretical advancements as well as recent discoveries in the subject. Through illustrative examples from the modern era, the current Review seeks to shed light on the significance and intriguing possibilities of BCPs solution self-assembly. It does this by highlighting recent developments and developing trends in the area as well as noteworthy application-oriented accomplishments. With an emphasis on (i) structure-property interactions to target precise nanoscale dimensions and shapes and (ii) measurement of C3M dynamics largely utilizing time-resolved scattering techniques, this Review focuses on recent initiatives to investigate these dynamic, out-of-equilibrium phenomena in more spatiotemporal detail. I explore important prospects for C3M design to promote precision medicine and offer many vignettes from these two new fields of C3M research. I provide many methods and talk about how they explain and expose parallels and discrepancies in the behavior of mixed micelles made from distinct polymeric building blocks and manufactured under varied circumstances.