97227-33-3Relevant articles and documents
Enhanced delivery of daidzein into fibroblasts and neuronal cells with cationic derivatives of gamma-cyclodextrin for the control of cellular glycosaminoglycans
Kamiński, Kamil,Kujdowicz, Monika,Kajta, Ma?gorzata,Nowakowska, Maria,Szczubia?ka, Krzysztof
, p. 111 - 119 (2015)
Two cationic derivatives of γ-cyclodextrin (GCD) were synthesized by functionalization with glycidyltrimethylammonium chloride (GTMAC) and ethylenediamine (EDA). Both these derivatives (GCD-GTMAC and GCD-EDA) have been shown to interact strongly with anio
PH-Controlled Chirality Inversion in Enantiodifferentiating Photocyclodimerization of 2-Antharacenecarboxylic Acid Mediated by γ-Cyclodextrin Derivatives
Kanagaraj, Kuppusamy,Liang, Wenting,Rao, Ming,Yao, Jiabin,Wu, Wanhua,Cheng, Guo,Ji, Jiecheng,Wei, Xueqin,Peng, Chao,Yang, Cheng
, p. 5273 - 5278 (2020)
Several γ-cyclodextrin (γ-CDx) derivatives were used as chiral hosts for the photocyclodimerization of 2-anthracenecarboxylic acid (AC). The effect of pH on photoreactivity and stereochemical outcome of photoproducts was investigated. Upon changing the so
Clockwise-counterclockwise differentiation on the upper rim of a monofunctional γ-cyclodextrin: Efficient topological control in the syntheses of capped cyclodextrins
Yu, Hua,Yuan, De-Qi,Makino, Yuji,Fukudome, Makoto,Xie, Ru-Gang,Fujita, Kahee
, p. 5057 - 5059 (2006)
Intramolecular condensation of 6A-(N-dansyl-l-cysteine)-γ- cyclodextrin occurred only at 6B-OH of the many OH groups to afford the corresponding lactone with an exo-topology. The Royal Society of Chemistry.
Supramolecular Assembly-Improved Triplet–Triplet Annihilation Upconversion in Aqueous Solution
Xu, Wei,Liang, Wenting,Wu, Wanhua,Fan, Chunying,Rao, Ming,Su, Dan,Zhong, Zhihui,Yang, Cheng
, p. 16677 - 16685 (2018/10/24)
Water-soluble 9,10-diphenylanthracene-modified γ-cyclodextrin derivatives A1 and A2, in which the γ-cyclodextrin unit serves as a molecular host for a binding sensitizer, and the 9,10-diphenylanthracene moiety plays a role as an emitter/annihilator, were synthesized to investigate the supramolecular triplet–triplet annihilation (TTA) upconversion in aqueous solution. Both A1 and A2 readily aggregate and form nanoscale assemblies in water as a combined result of host–guest complexation and π–π stacking among the 9,10-diphenylanthracenes. The aggregation behavior of the supramolecular emitters was fully characterized by using a diversity of methods, including dynamic light scattering (DLS), SEM, NMR, fluorescence, and circular dichroism studies. Fluorescence spectroscopic analysis reveals that the emitters have high fluorescence quantum yields in water (82 and 90 % for A1 and A2, respectively), thus demonstrating that aggregation does not quench the fluorescence. By using a coordinated ruthenium sensitizer, a high TTA upconversion quantum yield of up to 6.9 % was observed for this supramolecular TTA system, which is significantly higher than the value (0.5 %) obtained with nonassembled emitters in organic solvent and in contrast to the fact that TTA upconversion emission in aqueous solution is usually low or negligible. We ascribe the strong TTA upconversion emission in the present supramolecular assembly system to an efficient TTA process, which is facilitated along the stacked emitters by triplet energy migration and improved triplet–triplet energy transfer through host–guest complexation.
