Nanomaterials

Overcoming the translational gap and accelerating the development of advanced materials require enabling tools that provide reliable information to support decision-making throughout the innovation process. New Approach Methodologies (NAMs) can contribute substantially by generating relevant information while reducing reliance on conventional testing approaches. However, the reliability and relevance of many NAMs have not yet been sufficiently established across the applicability domains relevant to advanced materials. Given their diversity and complexity, formal validation of NAMs across the entire range of materials and applications is unlikely to be realistic. Instead, a fit-for-purpose approach is needed, with the level of evidence and qualification tailored to the intended use and applicability domain of the NAM. During early innovation, NAMs may support exploration, research, and iterative decision-making, where full regulatory qualification may not be necessary. In contrast, NAMs used to support regulatory decisions require more stringent qualification. This perspective paper describes the different roles NAMs can play in innovation and discusses a flexible application of existing qualification criteria according to intended use, supporting efficient and accelerated innovation especially for advanced and complex materials while maintaining confidence in NAM-derived information.

Building on a previously established metal–organic framework (MOF)-inspired deca-nary high-entropy oxide anode/alternating current electrophoretic deposition (AC-EPD) platform, this study elucidates the multication distribution, charge-storage kinetics, and long-term cycling advantage of a binder- and conductive-agent-free deca-nary high-entropy anode. The active material was synthesized using a metal–organic framework 74 (MOF-74)-inspired deca-metal solvothermal coordination approach. Although the product evolved into a crystalline multi-metal oxide derivative rather than retaining the MOF-74 topology, energy-dispersive X-ray spectroscopy (EDS) confirmed the atomic-level homogeneous distribution of ten distinct cations (Mg, Ca, Sr, Ba, Mn, Fe, Co, Ni, Zn, Cd). The additive-free AC-EPD approach maximized the active material density and demonstrated the intrinsic electrochemical robustness of the high-entropy structure. Consequently, the electrode exhibited exceptional reversibility and superior rate capability (recovering ~310 mAh g⁻¹ after 5.0 C cycling). Kinetic analysis revealed a dominant pseudocapacitive contribution (87% capacitive at 1.0 mV s⁻¹), facilitating rapid lithium-ion transport. This work highlights a synergistic strategy combining MOF-inspired synthesis and electrophoretic fabrication for advanced high-entropy electrodes.

Polyhedral oligomeric silsesquioxane (POSS) and double-decker silsesquioxane (DDSQ) are organic–inorganic hybrid nanostructures with well-defined siloxane frameworks that can be functionalized with various organic groups. In this study, a systematic series of six functional silsesquioxane derivatives was prepared using three different molecular architectures, POSS-8, DDSQ-4, and DDSQ-2. Three methacrylate-functionalized derivatives and three trimethoxysilane-functionalized derivatives were prepared from the corresponding Si–H-containing POSS and DDSQ precursors through hydrosilylation reactions. The target compounds were obtained in good yields of 81–91%, and their molecular structures were characterized by FT-IR, ¹H and ¹³C NMR, ²⁹Si NMR, and MALDI-TOF mass spectrometry. The spectroscopic results confirmed the successful introduction of the methacrylate and trimethoxysilane groups while maintaining the characteristic silsesquioxane frameworks. The parallel functionalization of POSS-8, DDSQ-4, and DDSQ-2 established a systematic series of silsesquioxane molecular precursors differing in framework architecture and peripheral functional-group density. The resulting derivatives contain either methacrylate or trimethoxysilane functionalities; however, their subsequent polymerization, hydrolysis/condensation, and material performance were not evaluated in the present study. Accordingly, these compounds are regarded as potential molecular precursors for further investigation.