13239-25-3Relevant academic research and scientific papers
Structural effects on the ground and excited-state properties of photoswitchable hydrogen-bonding receptors
Molard, Yann,Bassani, Dario M.,Desvergne, Jean-Pierre,Moran, Nina,Tucker, James H. R.
, p. 8523 - 8531 (2006)
The ground- and excited-state properties of a series of photochromic barbiturate receptors (N,N′-bis{6-[ω-(anthracen-9-yloxy) alkanoylamino]pyridin-2-yl}-5-t-butyl-isophthalamide, Tn), in which anthracene chromophores are tethered via (CH2)sub
Novel interfacially-polymerized polyamide thin-film composite membranes: Studies on characterization, pervaporation, and positron annihilation spectroscopy
Chao, Wei-Chi,Huang, Shu-Hsien,An, Quanfu,Liaw, Der-Jang,Huang, Ying-Chi,Lee, Kueir-Rarn,Lai, Juin-Yih
, p. 2414 - 2421 (2011)
To improve the pervaporation performance of thin-film composite membranes, novel thin-film composite membranes were prepared via interfacial polymerization by reacting 5-nitrobenzene-1,3-dioyl dichloride (NTAC) or 5-tert-butylbenzene- 1,3-dioyl dichloride
Anion induced conformational switch of a macrocyclic amide receptor
Chmielewski, Micha? J.,Szumna, Agnieszka,Jurczak, Janusz
, p. 8699 - 8703 (2004)
Isophthalic acid-based macrocyclic tetraamide 4 shows considerable conformational change during anion binding. In the solid state and in solution the free receptor exists in nonbonding, closed conformation stabilized by two intramolecular hydrogen bonds.
Photorelease of an organic molecule in solution: Light-triggered blockage of a hydrogen-bonding receptor site
Molard, Yann,Bassani, Dario M.,Desvergne, Jean-Pierre,Horton, Peter N.,Hursthouse, Michael B.,Tucker, James H. R.
, p. 1072 - 1075 (2005)
Bathed in light, the acyclic receptor 1 that binds a neutral guest molecule through hydrogen bonding (1-2) undergoes an intramolecular anthracene photodimerization reaction to yield a macrocyclic structure. The dramatic change in the structure of 1 from o
Spatiotemporal control of photothermal heating using pH sensitive near-infrared croconaine-based dyes
Alejo, Teresa,Font, Clara,Abad, Miriam,Andreu, Vanesa,Sebastian, Victor,Mendoza, Gracia,Arruebo, Manuel
, (2019)
Near-infrared (NIR) absorbing dyes sensitive to pH are promising small molecules that can be used in photothermal therapy for intracellular cancer treatment. In this study, a croconaine dye molecule protected within a macrocycle has been prepared to be te
Diphosphametacyclophanes: Structural and electronic influences of substituent variation within a family of bis(diketophosphanyl) macrocycles
Pearce, Kyle G.,Crossley, Ian R.
, p. 14697 - 14707 (2020)
The condensation of MeP(SiMe3)2 with a series of 5-substituted isophthaloyl chlorides (5-R′C6H3-2,6-{C(O)Cl}2) affords the diphosphametacyclophanes m-{-C(O)-C6H3-5-R′-(C(O)PMe)}2 (R′ = I, Me, tBu, Ph, and p-NCC6H4); the analogues m-{-C(O)-C5H3N-(C(O)PMe)}2 and m-{-C(O)-C6H4-(C(O)PPh)}2 are similarly obtained in preference to higher oligomers, in contrast to precedent reports. The cyclophanes all adopt butterfly-like conformations in the solid state with the P-organyl substituents adopting mutually exo arrangements. Structural and computational data suggest the nature of the 5-R substituent is key in directing the inter-ring angle and the extent of LUMO stabilization about the diketophophanyl scaffold. The latter is substantiated by UV/vis spectroscopy and cyclic voltammetry, which demonstrate these cyclophanes to be appreciably comparable to the diketophosphanyl systems commonly explored in the context of organic electronic materials; intriguingly, the distinct dikeophosphanyl moieties within the macrocycles appear effectively “insulated” by the macrocycle geometry, rather than acting as a through-conjugate.
A Chiral Halogen-Bonding [3]Rotaxane for the Recognition and Sensing of Biologically Relevant Dicarboxylate Anions
Lim, Jason Y. C.,Marques, Igor,Félix, Vítor,Beer, Paul D.
, p. 584 - 588 (2018)
The unprecedented application of a chiral halogen-bonding [3]rotaxane host system for the discrimination of stereo- and E/Z geometric isomers of a dicarboxylate anion guest is described. Synthesised by a chloride anion templation strategy, the [3]rotaxane host recognises dicarboxylates through the formation of 1:1 stoichiometric sandwich complexes. This process was analysed by molecular dynamics simulations, which revealed the critical synergy of halogen and hydrogen bonding interactions in anion discrimination. In addition, the centrally located chiral (S)-BINOL motif of the [3]rotaxane axle component facilitates the complexed dicarboxylate species to be sensed via a fluorescence response.
A hybrid macrocycle containing benzene and pyridine subunits is a better anion receptor than both its homoaromatic congeners
Chmielewski, Micha? J.,Jurczak, Janusz
, p. 3085 - 3088 (2005)
The hybrid tetraamide receptor 3 containing both 2,5-diamidopyridine and 1,3-diamidobenzene anion binding units has been synthesized. NOESY spectroscopy revealed that the new receptor is well preorganized for anion complexation, presumably owing to the macrocyclic topology and the rigidity of the 2,5-diamidopyridine unit. Association constants of 3 with several anions are higher than those determined earlier for its homoaromatic congeners 1 and 2. X-ray crystallographic analysis of the chloride complex of hybrid macrocycle 3 enabled direct comparison of structural aspects of anion recognition by the 2,5-diamidopyridine and 1,3-diamidobenzene moieties.
Active metal template synthesis of a neutral indolocarbazole-containing [2]rotaxane host system for selective oxoanion recognition
Brown, Asha,Lang, Thomas,Mullen, Kathleen M.,Beer, Paul D.
, p. 4587 - 4594 (2017)
An active metal template strategy was used to synthesise a neutral indolocarbazole containing [2]rotaxane anion host system. 1H NMR anion binding investigations reveal that the [2]rotaxane recognises a range of monoanions in acetone-d5:D2O 95: 5 with an unusual interlocked host selectivity for acetate and dihydrogenphosphate oxoanions over halides. The rotaxane displays an overall selectivity for the sulfate dianion, favouring a 2: 1 host: guest binding stoichiometry at low sulfate concentration and a 1: 1 stoichiometry in the presence of excess sulfate. Fluorescence titration demonstrates that the [2]rotaxane is also capable of sensing guest anions via significant changes in its emission spectrum.
Synthesis and characterization of aromatic poly(amides) based on 3,5-diamino-N-cyclopropylbenzamide
Tundidor-Camba,Terraza,Tagle,Coll,Ojeda,Pino
, p. 23057 - 23066 (2015)
Three aromatic poly(amides) (PAs) were prepared, one of them containing a dimethyldiphenylsilane unit from a new aromatic diamine monomer with a bulky pendant polar group. All PAs were obtained in high yield and the inherent viscosities were in the range
