Metal Assembly of Cyclodextrin Recognition Sites

Abstract

Cyclodextrin recognition sites are assembled in macromolecular structures by using metal assembly principles. Methylated cyclodextrins are functionalised with bidentate bipyridine and tridentate terpyridine units to give versatile receptor ligands, β-CD−mbpy and β-CD−ttp, respectively, for metal complexation. Tris-cyclodextrin complexes are prepared by reaction of the β-CD−mbpy receptor with iron(II) and by re-

Functional Supramolecular Ruthenium Cyclodextrin Dyes for Nanocrystalline Solar Cells

“…General Information and Materials: Ru(dcb) 2 Cl 2 [9] and the ligand a-CD-5-bpy [10], were prepared as previously described. 1 H NMR spectra were recorded on a Bruker AC300 spectrometer.…”

“…The complex [Ru(dcb) 2 (a-CD-5-bpy)]Cl 2 (1-a-CD) was synthesized by heating a mixture of Ru(dcb) 2 Cl 2 [9] and the ligand a-CD-5-bpy, [10] which were prepared following previously reported procedures by heating to reflux in an ethanol-water mixture.…”

Functional Supramolecular Ruthenium Cyclodextrin Dyes for Nanocrystalline Solar Cells

“…General Information and Materials: Ru(dcb) 2 Cl 2 [9] and the ligand a-CD-5-bpy [10], were prepared as previously described. 1 H NMR spectra were recorded on a Bruker AC300 spectrometer.…”

“…The complex [Ru(dcb) 2 (a-CD-5-bpy)]Cl 2 (1-a-CD) was synthesized by heating a mixture of Ru(dcb) 2 Cl 2 [9] and the ligand a-CD-5-bpy, [10] which were prepared following previously reported procedures by heating to reflux in an ethanol-water mixture.…”

Acetylenic cyclodextrins for multireceptor architectures: cups with sticky ends for the formation of extension wires and junctions

“…The HSQC spectrum of 5 is shown in Fig.4. The correlation between the distinct signals for each of the anomeric positions is clearly seen around 4.9-5.5 ppm and 96-100 ppm in the 1 H and13 C NMR spectra, respectively. In the 3.0-3.7 ppm region of the 1 H NMR spectrum, the methoxy signals can be distinguished by their correlation to the13 C signals at 58-62 ppm, whereas the protons…”

Vectorial Control of Energy‐Transfer Processes in Metallocyclodextrin Heterometallic Assemblies

“…The ligands 6-mono[4-methyl(4'-methyl-2,2'-bipyridyl)]-permethylated b-cyclodextrin (b-CD-mbpy), [12] 4'-(4-biphenyl)-2,2':6',2''-terpyridine (biptpy), [23] 4'-(1-adamantyl)-2,2':6',2''-terpyridine (tpy-ada) and the metal complexes [12] were prepared by analogous procedures to those previously reported. The time-resolved emission experiments were performed by time-correlated single-photon counting system employing a frequency doubled DCM dye laser which is synchronously pumped with a mode locked Argon ion laser resulting in 324 nm 20 ps FWHM pulses; details of the instrument have been previously described.…”

Functional Supramolecular Ruthenium Cyclodextrin Dyes for Nanocrystalline Solar Cells

“…General Information and Materials: Ru(dcb) 2 Cl 2 [9] and the ligand a-CD-5-bpy [10], were prepared as previously described. 1 H NMR spectra were recorded on a Bruker AC300 spectrometer.…”

“…The complex [Ru(dcb) 2 (a-CD-5-bpy)]Cl 2 (1-a-CD) was synthesized by heating a mixture of Ru(dcb) 2 Cl 2 [9] and the ligand a-CD-5-bpy, [10] which were prepared following previously reported procedures by heating to reflux in an ethanol-water mixture.…”

Acetylenic cyclodextrins for multireceptor architectures: cups with sticky ends for the formation of extension wires and junctions

“…The HSQC spectrum of 5 is shown in Fig.4. The correlation between the distinct signals for each of the anomeric positions is clearly seen around 4.9-5.5 ppm and 96-100 ppm in the 1 H and13 C NMR spectra, respectively. In the 3.0-3.7 ppm region of the 1 H NMR spectrum, the methoxy signals can be distinguished by their correlation to the13 C signals at 58-62 ppm, whereas the protons…”

Vectorial Control of Energy‐Transfer Processes in Metallocyclodextrin Heterometallic Assemblies

“…The ligands 6-mono[4-methyl(4'-methyl-2,2'-bipyridyl)]-permethylated b-cyclodextrin (b-CD-mbpy), [12] 4'-(4-biphenyl)-2,2':6',2''-terpyridine (biptpy), [23] 4'-(1-adamantyl)-2,2':6',2''-terpyridine (tpy-ada) and the metal complexes [12] were prepared by analogous procedures to those previously reported. The time-resolved emission experiments were performed by time-correlated single-photon counting system employing a frequency doubled DCM dye laser which is synchronously pumped with a mode locked Argon ion laser resulting in 324 nm 20 ps FWHM pulses; details of the instrument have been previously described.…”

Functional Supramolecular Ruthenium Cyclodextrin Dyes for Nanocrystalline Solar Cells

“…General Information and Materials: Ru(dcb) 2 Cl 2 [9] and the ligand a-CD-5-bpy [10], were prepared as previously described. 1 H NMR spectra were recorded on a Bruker AC300 spectrometer.…”

“…The complex [Ru(dcb) 2 (a-CD-5-bpy)]Cl 2 (1-a-CD) was synthesized by heating a mixture of Ru(dcb) 2 Cl 2 [9] and the ligand a-CD-5-bpy, [10] which were prepared following previously reported procedures by heating to reflux in an ethanol-water mixture.…”

Acetylenic cyclodextrins for multireceptor architectures: cups with sticky ends for the formation of extension wires and junctions

“…The HSQC spectrum of 5 is shown in Fig.4. The correlation between the distinct signals for each of the anomeric positions is clearly seen around 4.9-5.5 ppm and 96-100 ppm in the 1 H and13 C NMR spectra, respectively. In the 3.0-3.7 ppm region of the 1 H NMR spectrum, the methoxy signals can be distinguished by their correlation to the13 C signals at 58-62 ppm, whereas the protons…”

Vectorial Control of Energy‐Transfer Processes in Metallocyclodextrin Heterometallic Assemblies

“…The ligands 6-mono[4-methyl(4'-methyl-2,2'-bipyridyl)]-permethylated b-cyclodextrin (b-CD-mbpy), [12] 4'-(4-biphenyl)-2,2':6',2''-terpyridine (biptpy), [23] 4'-(1-adamantyl)-2,2':6',2''-terpyridine (tpy-ada) and the metal complexes [12] were prepared by analogous procedures to those previously reported. The time-resolved emission experiments were performed by time-correlated single-photon counting system employing a frequency doubled DCM dye laser which is synchronously pumped with a mode locked Argon ion laser resulting in 324 nm 20 ps FWHM pulses; details of the instrument have been previously described.…”