Mechanically interlocked molecules in metal–organic frameworks

Abstract

MIM-based MOFs have a promising future in the preparation of smart materials. The vast number of structural possibilities which offer their design are disclosed in this review.

Mechanical Bonding as a Promoter of Crystalline Diversity in Halogenated [2]Rotaxanes

“…Crystal engineering seeks to understand the intermolecular interactions in the crystalline state to develop new solids with desired chemical and physical properties . In the crystalline state, the organization of a molecule is closely related to its properties (i.e., differences in the packing can modify its physical properties). − Since the area of MIMs is becoming more significant with numerous applications, − it is indispensable to study how these compounds behave in the crystalline solid state.…”

Photoresponsive Metal-Organic Frameworks as Adjustable Scaffolds in Reticular Chemistry

“…Thus, interlocked fumaramides are postulated as a usefu obtain molecular machines operating through photoisomerization to their equiv tertwined maleamides (Figure 15) [99][100][101][102]. The incorporation of rotaxanes inside a MOF matrix has turned out to be a strategy to exploit the properties of this type of MIMs in the solid state [103][104][105][106] ing the study of the component's dynamics [107][108][109][110].…”

“…The stacking of these rhomb metallogrids stablished well-ordered channels along the a-axis. Interestingly, the has enough free volume to undergo the fumaramide/maleamide isomerizatio upon irradiation at 312 nm of a suspension of UMUMOF-(E)-3 crystals in d methane for 8 h, a new material having 20% of interlocked maleamides (Z)-15 (Fig was obtained, showing a higher pore size compared to that of the pristine mate The incorporation of rotaxanes inside a MOF matrix has turned out to be a suitable strategy to exploit the properties of this type of MIMs in the solid state [103][104][105][106], including the study of the component's dynamics [107][108][109][110].…”

Fullerene-containing pillar[n]arene hybrid composites

“…Such an obtained fullerene-containing pillar[ n ]arene with an available cavity could further be used as building blocks for the construction of MIM. 80–84 In addition, the partial macrocyclic skeleton of pillar[ n ]arene could also be fabricated by directly using the molecular architecture of fullerene, leading to the “structural merging” of pillar[ n ]arene and fullerene.…”

“…Such an obtained fullerene-containing pillar[n]arene with an available cavity could further be used as building blocks for the construc-tion of MIM. [80][81][82][83][84] In addition, the partial macrocyclic skeleton of pillar[n]arene could also be fabricated by directly using the molecular architecture of fullerene, leading to the "structural merging" of pillar[n]arene and fullerene. Methylene subunits on the macrocyclic ring of diethoxypillar [5]arene P1 were first activated under the conditions of bromination with N-bromosuccinimide (NBS), hydrolysis, and oxidation of a secondary benzylic alcohol with BaMnO 4 , subsequently being transferred into the hydroxyl moiety on P17 and ketones subunits on P18 (Scheme 4).…”