Hydrosilylation of porous silicon: Unusual possibilities and potential challenges

Among the many types of surface modifications on porous silicon (pSi), hydrosilylation stands out to be an important approach due to the formation of highly stable surface linkage through Si-C bonding. Since its conceptualization in 1998, hydrosilylation had gradually gained popularity for pSi surface modifications and had become an important approach for stabilizing pSi surfaces especially for biological applications. Over the past decade, significant advancements have been made in the hydrosilylation process for modifying porous silicon (pSi) surfaces. These developments have progressed to the point of enabling the incorporation of multiple chemical functionalities onto a single surface. This review aims to highlight the most recent studies on hydrosilylation of pSi surfaces, explore some of the more unconventional reaction mechanisms available in pSi surface chemistry, and discuss the challenges associated with implementing these strategies.