Exploring the advancements in HOF based photocatalytic and electrochemical assemblies for remediation and energy related applications.

Hydrogen Organic Frameworks (HOFs) represent a class of highly porous, ordered materials, which due to their intense hydrogen-bond constituted framework are strikingly different from their contemporary organic framework-based counterparts. Based on the intricate hydrogen-bond governed architecture, HOFs possess unique reversibility in terms of their structural stability, which renders them with extended advantages and enhanced efficacy towards acting as integral supporting substrates in variety of design assemblies compared to other organic frameworks. Despite having such vast potential, HOFs are relatively underexplored, specifically in the key structural assemblies aimed at photocatalytic and electrochemical processes. Hence, this article attempts to bridge this gap and provides an extensive and holistic review of the literature articles reported regarded HOF based photocatalytic and electrochemical assemblies. Broadly, both types of assemblies have been adequately categorized to holistically discuss aspects such as remediation and detection of aqueous, gaseous and biological compounds; energy production processes such as hydrogen production and development of supercapacitors for energy storage aspects in a sequential and logical manner. Besides this, the persisting challenges and bottlenecks regarding the HOFs, based on compiled reports have also been provided, alongside their possible resolution using emerging design strategies. Considering the proportionally underexplored extent of HOFs, it is strongly anticipated that this review article will provide the readership both meaningful foundational insights and advanced understanding of critical aspects related to these frameworks and would widen their horizon for further crucial applications.