Spiro-based diamond-type nanogrids (DGs) via two ways: ‘A₁B₁’/‘A₂ + B₂’ type gridization of vertical spiro-based fluorenol synthons

Abstract

Diamond-type nanogrids (DGs), can helically expand to form spiro-linked polymers. Herein, we designed and synthesized two types of DGs, DGs-1 (A1B1 mode) in 44–50% yields, and DGs-2 (A2 + B2 mode) in 64% yield.

One‐Pot Synthesis of Axially and Centrally Chiral A‐type Nanogrids

“…Nanogrids, an emerging area of chiral carbon nanostructures, are powerful square carbon nanomaterials with edges and vertices, and their extraordinary expandable skeleton allows for constructing complex covalent nanoarchitectures. [ 8 ] Recently, a series of novel chiral nanogrids, including windmill‐type, [ 9 ] diamond‐type, [ 10 ] ladder‐type and drawing hands‐type, [ 11‐12 ] have been synthesized using Friedel‐Crafts gridization. Our studies have demonstrated the potential of ordered chiral nanogrids for stereoregular organic nanopolymers applications.…”

A One-Pot Synthesis of Axially and Centrally Chiral A-type Nanogrids

“…Nanogrids, an emerging area of chiral carbon nanostructures, are powerful square carbon nanomaterials with edges and vertices, and their extraordinary expandable skeleton allows for constructing complex covalent nanoarchitectures. 6 Recently, a series of novel chiral nanogrids, including windmill-type, 7 diamond-type, 8 ladder-type and drawing handstype, 9,10 have been synthesized using Friedel-Crafts gridization. Our studies have demonstrated the potential of ordered chiral nanogrids for stereoregular organic nanopolymers applications.…”

Thermodynamic-Dominated Stereoselective Gridization of Molecular Nanolinkage Based on Fluorenes

“…The laws of stereoselective gridization from MC nanosynthons (Figure 2a) were investigated under the conditions of CH2Cl2 solvent (0.005 M), BF3•OEt2 acid catalyst and room temperature, according to previous work. 22,23 Primarily, when using 2 equiv. of BF3•OEt2 in 15 min, CH3O-substituted MC1 nanosynthons are transformed into the target product DHG1-F in 75% yield, along with the generation of Polymers1-F in 25% yields.…”

“…Acid is 10 equiv., DCM (0.005M) as solvent. (e) The dependence of substituent on the yields of DHGs-F.The laws of stereoselective gridization from MC nanosynthons (Figure2a) were investigated under the conditions of CH2Cl2 solvent (0.005 M), BF3•OEt2 acid catalyst and room temperature, according to previous work 22,23. Primarily, when using 2 equiv.…”