dianhydrids

Dianhydrids are a hypothetical class of modular, hydrogen-related nanostructures described in speculative fiction and theoretical discussions of energy storage. They are imagined as small, reconfigurable units that can reversibly bind hydrogen to form larger aggregates, enabling rapid uptake and release of chemical energy. The concept is used to explore ideas about distributed energy systems, self-assembly, and emergent behavior in nanoscale materials.

The name combines di- meaning two and hydrid from hydride, signaling paired hydrogen-bearing units.

Basic unit and architecture: A dianhydrid unit is often described as a diadic core with two reactive hydrogen partners; networks form via reversible covalent or coordination bonds, allowing modular growth into lattices, chains, or clusters.

Origins and usage: The term appears in speculative fiction and thought experiments; there is no empirical evidence for dianhydrids in real-world chemistry.

Applications and challenges: Potential uses include hydrogen storage, on-demand energy release, and smart materials. Realization faces hurdles such as synthesis, stability under operating conditions, control of reactivity, and environmental safety.