Wiley Online Library : Chemistry - A European Journal
Supramolecular organic frameworks (SOFs) made of organic guest molecule and cucurbit[8]uril (CB[8]) in aqueous solution have great potential for diverse applications. Herein, we designed highly fluorescent zero-dimensional (0D) nano-ring SOF with CB[8] as a host and novel bent-shaped cyanostilbene guest. This host-guest complex successfully formed macrocyclic...
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Antifreeze glycoprotein (AFGP), which inhibits the freezing of water, is highly O-glycosylated with a disaccharide, D-Galβ1-3-D-GalNAcα (GalGalNAc). To elucidate the function of the sugar residues for antifreeze activity at the molecular level, we conducted a total chemical synthesis of partially sugar deleted AFGP derivatives, and unnatural forms of AFGPs...
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Stabilizing methodology: Emerging strategies, such as linkage transformation strategy, bond protection strategy, and interlayer interaction engineering, have recently been developed to regulate the stability of 2D imine-linked COFs. This provides a facile solution to the instability of imine-linked COFs while simultaneously conserving their structural...
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In this work, nitrogen-annulated perylene (NP) was dimerized into one framework connected by two nitrogen atoms, generating the target molecule of DNP-DA. Owing to the substructure of 1,6-diazecine ten-membered ring, DNP-DAillustrates helical chirality with moderate dissymmetry factor, elevated molecular levels, expanded conjugation and supramolecular...
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A simple synthesis method of solanidane alkaloids from common steroidal sapogenins was developed. Previously described multi-step transformations of tigogenin to demissidine (8‑12 steps) were shortened to four steps only. The key-step of the present synthesis was the epimerization at C25 of the lactam intermediate. Different approaches to this reaction,...
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Electron-vibration coupling is an important factor affecting the energy loss of organic solar cells. Enhancing molecular planarity and rigidity, adopting angular fusion mode, and tuning electron-deficient core can effectively decrease the electron-vibration couplings of A−D−A electron acceptors to achieve efficient charge generation and low energy loss...
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Extending the monomer's conjugation degree of HCPs photocatalysts could significantly promote the separation and transfer efficiency of photogenerated carriers. QP-HCPs bring out the best photocatalytic activity for amines oxidation coupled with H2O2 generation due to its maximum monomer's conjugation degree and excellent O2 adsorption capacity. ...
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1,1′-Bi-2-naphthol (BINOL) induces high enantiomeric excess of Petasis reaction by forming cyclic B(IV)BINOL intermediates. The chelate formation results in an extraordinary reaction rate acceleration and in the diminishment of the racemic background reaction. An unusual iminium C−H and O-BINOL hydrogen bond is responsible for the stereoselectivity....
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The introduction of a phenolate pendant arm in place of an acetate on AAZTA- and DATA-like ligands resulted in hepta- and hexadentate chelators able to form Ga(III) complexes with thermodynamic stability and kinetic inertness higher than that of other Ga(III) complexes based on the parent 6-amino-6-methylperhydro-1,4-diazepine scaffold. In particular,...
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The reduction of metal oxides with hydrogen is widely used for the production of fine chemicals and metals both at laboratory and industry scale. In situ methods can help to elucidate reaction pathways and to gain control over such synthesis reactions. In this study, the reduction of WO3 and V2O5 with hydrogen has been investigated with in situ X-ray...
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