Circumventing Wear and Tear of Adaptive Porous Materials. (6th February 2020)

• Record Type: Journal Article
• Authors: Canossa, Stefano; Ji, Zhe; Wuttke, Stefan
• Is Part Of: Advanced functional materials. Volume 30:Number 41(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-02-06
• Subjects: adaptive materials -- damage -- defects -- metal–organic frameworks -- Porous materials; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201908547
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: The assessment of the architectural stability of molecular porous materials is not yet a common practice, but critical to their understanding and development. The conformational adaptation of porous materials to guest binding and other chemical dynamics poses a risk of architectural damage, leading to performance deterioration during their prolonged usage. The deformation of the framework backbone and the disconnection of building units are driven by chemical, mechanical, and thermal perturbations, and can be quantitatively described by the term connection completeness. Analytical means that can be used to measure this parameter are presented in order to provide a standard, practical protocol for evaluating architectural damage made to framework materials. Preventive and remedial strategies are proposed for enhancing the architectural integrity of frameworks without compromising their functional mechanisms, paving the way to the design of robust yet adaptive materials. In this way, the discussion on architectural stability is initiated, and readers are encouraged to carefully characterize molecular porous materials for a better understanding of their structure‐property relationship. Abstract : As adaptive porous materials undergo unavoidable usage‐induced damage and fracture (wear and tear), a mindful approach to their study allows the establishment of innovative strategies to circumvent structural fragility and define new durability standards.