Efficient solid-state photoswitching of methoxyazobenzene in a metal–organic framework for thermal energy storage

Abstract

4-Methoxyazobenzene can be occluded into the pores of a MOF and show near-quantitative E → Z photoisomerization under irradiation with 365 nm light. The energy density of the composite is 101 J g−1 and the half-life of the Z-isomer is 6 days.

A 2-fold interpenetrated zinc–organic framework with Lewis basic triazole sites: luminescence sensing of Fe3+ and Cr2O72−, and warm white-light emission by encapsulated Ln3+ ions

“…The bond lengths of Zn–O are in the range of 1.952–2.407 Å, and the Zn–N distances are 2.043 and 2.066 Å, which are consistent with those reported previously. 24,25 The distance of Zn⋯Zn is 3.458 Å, compared with those of reported MOF materials (Table S3†). The adjacent Zn1 and Zn2 are connected by two carboxylic acid groups of two OBA 2− ligands, and a binuclear zinc secondary building unit [Zn 2 (COO) 2 ] is formed.…”

Metal–Photoswitch Friendship: From Photochromic Complexes to Functional Materials

“…Moreover, MOFs allow for tailoring a framework environment through skeleton modification or wall grafting (Scheme ). ,− ,,,− ,,− Furthermore, photoswitch behavior can be tuned by incorporation of different guest molecules within framework cavities, including the presence or absence of solvent molecules of different polarity. ,,− Thus, in this section, we discuss the advantages of coordination of photoresponsive molecules to metals in well-defined crystalline scaffolds and the corresponding effects on physicochemical properties of the material, as well as outline the potential scientific gaps in this area.…”

Photoelectroactive metal–organic frameworks

“…As a class of multifunctional porous materials, MOF-based solar-driven water harvesting, [27][28][29][30] solar-driven steam generation/desalination/water purication, 31-36 photocatalysis, [37][38][39] photovoltaics, [40][41][42] and solar thermal energy storage 43,44 have been widely studied because solar energy represents a sustainable, and green technology with good Cong Cong received her MS degree from Nara Women's University, Japan, in 2011 and her PhD from Kyoto University, Japan, in 2014. She joined Nanjing Tech University, China, in 2015.…”

“…As a class of multifunctional porous materials, MOF-based solar-driven water harvesting, 27–30 solar-driven steam generation/desalination/water purification, 31–36 photocatalysis, 37–39 photovoltaics, 40–42 and solar thermal energy storage 43,44 have been widely studied because solar energy represents a sustainable, and green technology with good prospects. Among the abovementioned photoactive applications, photocatalysis and photovoltaics are particularly attractive.…”