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1 mes longer, reaching 60 degrees C in the C24 rotaxane.
2 synthesis of a chain-centered macromolecular rotaxane.
3 d allowed the quantitative deslipping of the rotaxane.
4 s drive the assembly and replication of a [2]rotaxane.
5 f the wheel on the axle of the metal-free [2]rotaxane.
6 he rhenium(I) chlorocarbonyl complex of this rotaxane.
7 ane, a [2]rotaxane, and a doubly threaded [3]rotaxane.
8 y indicated by fluorescent changes of the [3]rotaxane.
9 yl) ether to efficiently provide up to a [20]rotaxane.
10 scence quantum yield upon encapsulation as a rotaxane.
11 synthesis of a series of [2]-, [3]-, and [4]rotaxanes.
12 taxanes into still larger [4]-, [5]- and [7]-rotaxanes.
13 topper groups provide efficient access to [n]rotaxanes.
14 ties residing in the resulting catenanes and rotaxanes.
15 backward in a homologous series of bistable rotaxanes.
16 e interactions between the components of the rotaxanes.
17 ions of the fully oxidized forms of these [2]rotaxanes.
18 hylene chain lengths across the series of [2]rotaxanes.
19 trapped on the dumbbell components of the [4]rotaxanes.
20 gh nanotubes to the formation of chromogenic rotaxanes.
21 cycle provides access to a modular series of rotaxanes.
22 -triazole product to give instead acrylamide rotaxanes.
23 scale translational movement in two bistable rotaxanes.
25 bound to the central triangle while the [3]-rotaxane 4 contains only two [2]-rotaxanes bound to the
27 ivity as a catalyst (2-14 % ee), whereas the rotaxane affords selectivities of up to 40 % ee with swi
28 T) processes by fixing the fluorophores in a rotaxane and (iv) establishing the principle of supramol
29 etween the components of this supramolecular rotaxane and are important for the development of materi
30 thogonal recognition-mediated processes, the rotaxane and thread can act as auto-catalytic templates
32 simulations of the tristable and bistable [2]rotaxanes and [2]catenane reveal a mechanism which invol
34 synthesis and photophysical investigation of rotaxanes and catenanes decorated with peripheral electr
35 distinct molecular conformations adopted by rotaxanes and catenanes in the electron transfer dynamic
37 work has led from the reliable synthesis of rotaxanes and catenanes to molecular rotary motors, shut
38 that upon excitation, our multichromophoric rotaxanes and catenanes undergo a cascade of sequential
39 mechanically interlocked compounds, such as rotaxanes and catenanes, the molecules are held together
40 arger interlocked dsDNA nanostructures, like rotaxanes and catenanes, to achieve diverse mechanical o
41 ked molecules (MIMs)--specifically, bistable rotaxanes and catenanes--which exhibit reset lifetimes b
42 aromatic residues in contiguous rings in the rotaxanes and consequently, a discrete rigid and rod-lik
43 d incorporated into hybrid organic-inorganic rotaxanes and into molecules containing up to 200 metal
44 as a result of orthogonal templation, two [4]rotaxanes and one [5]rotaxane in >90% yields inside 2 h
45 ed mechanism of switching of two bistable [2]rotaxanes and one bistable [2]catenane composed of CBPQT
48 X-ray crystallographic analysis on six [2]rotaxanes and two [3]rotaxanes provides insight into the
51 hreading process, the half-life times of the rotaxanes, and the influence of temperature and solvents
52 es exist naturally in a threaded state as [1]rotaxanes, and we reasoned that lasso peptides cleaved i
54 eversible switching of a double-stranded DNA rotaxane architecture from a stationary pseudorotaxane m
55 erically protected from reprotonation by the rotaxane architecture, which renders the Cu(I)-C bond st
56 her based wheel along the axis of a bistable rotaxane are triggered by the decarboxylation of 2-cyano
61 IPY(*+) radical cations in this series of [2]rotaxanes are stabilized against oxidation, both electro
63 organic framework by using an amide-based [2]rotaxane as linker and copper(II) ions as metal nodes.
64 biomimetic state for the tetradentate Cu(II) rotaxane, as well as the formation of stable Ni(I) speci
65 cle can be elongated after completion of the rotaxane assembly, giving rise to a unique structure tha
66 efficient syntheses of two catenanes and one rotaxane, assisted by radical-pairing interactions betwe
67 the pH actuation of the mechanically active rotaxane at the nanoscale influences the physical reticu
68 lly located chiral (S)-BINOL motif of the [3]rotaxane axle component facilitates the complexed dicarb
69 anes in one step, up to 95% yield and >100:1 rotaxane:axle selectivity, from primary amines, crown et
72 he near-quantitative aqueous synthesis of [2]rotaxanes based on neutral and charged aqueous hosts-cuc
73 port the synthesis and characterization of a rotaxane-based (129) Xe hyperCEST NMR contrast agent tha
75 t a series of tri-, tetra-, and pentadentate rotaxane-based ligands and a detailed study of their met
80 synthesis and operation of a three-barrier, rotaxane-based, artificial molecular machine capable of
81 hreading of a series of succinamide-based [2]rotaxanes bearing benzylic amide macrocycles is reported
82 process to switch an appropriately designed rotaxane between prochiral and mechanically planar chira
83 e chalcogen atoms in the mechanically bonded rotaxane binding sites in organic and aqueous solvent mi
85 xane 3 is an isosceles triangle of three [2]-rotaxanes bound to the central triangle while the [3]-ro
87 as been previously used for the synthesis of rotaxanes but has not been applied to the development of
88 es of Coulombically challenged catenanes and rotaxanes, but it also opens up the possibility of synth
89 e topology and structural integrity of these rotaxanes by analyzing the intermediate and final produc
90 on of pH-sensitive bistable [c2] daisy chain rotaxanes by using copper(I)-catalyzed Huisgen 1,3-dipol
91 imetry (DSC) reveals that the longer polyyne rotaxanes (C16, C18, and C24) decompose at higher temper
92 m site located on the axle component of a [2]rotaxane can be reversibly modulated by changing the aff
94 donor recognition units in the tristable [2]rotaxane can prolong the lifetime and stability of the M
95 n demetalation the axle of a singly threaded rotaxane can slip through a macrocycle that is sufficien
98 e differences in the (1)H NMR spectra of the rotaxanes can be related to the presence of conformers i
101 binding catalysis sites of the dual-function rotaxane catalyst can be sequentially concealed or revea
102 e macrocycle dictates the facial bias of the rotaxane-catalyzed conjugate addition of aldehydes to vi
104 mechanically-interlocked molecules, such as rotaxanes, catenanes, Borromean rings, and Solomon knots
105 ulation experiments revealed that the chiral rotaxane cavity significantly enhances enantiodiscrimina
106 , structures, and properties of [4]- and [3]-rotaxane complexes are reported where [2]-rotaxanes, for
107 the nitrate and chloride halogen bonding [3]rotaxane complexes corroborate the (1) H NMR anion bindi
108 edox-active viologen subunits located on the rotaxane components can be accessed electrochemically in
109 subjected to redox control in a bistable [2]rotaxane comprised of a dumbbell component containing an
112 mulated switching behavior of a tristable [2]rotaxane consisting of a cyclobis(paraquat-p-phenylene)
113 e structures and excited-state dynamics of a rotaxane consisting of a hexayne chain threaded through
115 ling has been used to synthesize a series of rotaxanes consisting of a polyyne, with up to 24 contigu
117 e) and the alpha-cyclodextrin-based pseudo[3]rotaxane containing axially chiral 1,1'-binaphthyl and p
118 However, the synthesis of a metal-free [2]rotaxane containing triazole with other functionalities
119 the present work, a novel photoresponsive [3]rotaxane containing two cucurbit[7]uril (CB[7]) rings an
120 irst examples of mechanically interlocked [2]rotaxanes containing ChB-donor groups are prepared via a
121 es of a family of structurally similar XB [2]rotaxanes containing different combinations of chiral an
124 oninterlocked equivalent of the pentadentate rotaxane Cu(II) complex could be formed selectively, and
126 nt influence of the chiral macrocycle in our rotaxane design for determining the effectiveness of chi
133 driven fluid delivery system and a squaraine rotaxane fluorophore, SeTau-647, as the fluorescent labe
134 dye completes the palette of known squaraine rotaxane fluorophores whose emission profiles span the c
135 scaffold, we employed a double-stranded DNA rotaxane for its ability to undergo programmable and pre
136 tailed investigation of the use of chiral XB rotaxanes for this purpose, extensive (1)H NMR binding s
139 omplexes, causing thread formation to exceed rotaxane formation in the current experimental system.
142 3]-rotaxane complexes are reported where [2]-rotaxanes, formed from heterometallic {Cr(7)Ni} rings, a
143 hat readily available mechanically chelating rotaxanes give rise to complexes the noninterlocked equi
148 xane-based molecular machines and materials, rotaxanes have not been attached covalently to proteins.
150 yridinium axle containing halogen bonding [2]rotaxane host exhibits exceptionally strong halide bindi
152 the nitrite anion template, the europium [2]rotaxane host is demonstrated to recognize and sense flu
153 a chloride anion templation strategy, the [3]rotaxane host recognises dicarboxylates through the form
154 he synthesis of the first halogen bonding [3]rotaxane host system containing a bis-iodo triazolium-bi
155 d application of a chiral halogen-bonding [3]rotaxane host system for the discrimination of stereo- a
156 is and anion binding properties of the first rotaxane host system to bind and sense anions purely thr
158 rticle we show that bistable [c2]daisy chain rotaxanes (i.e., molecular muscles) can be linked into m
159 ional isomers of polymacrocycles as rings in rotaxanes, (iii) demonstrating solid-state fluorescence
160 onal templation, two [4]rotaxanes and one [5]rotaxane in >90% yields inside 2 h at 55 degrees C in ac
163 arative solution-state NMR studies of the [2]rotaxane in its unprotonated and protonated states were
165 for production of mechanically planar chiral rotaxanes in excellent enantiopurity without the use of
166 e metal-free active template synthesis of [2]rotaxanes in one step, up to 95% yield and >100:1 rotaxa
167 er networks, knots along polymer chains, and rotaxanes in sliding ring gels, have important consequen
168 he solid-state structures of the [3]- and [4]rotaxanes in the R series and also on the basis of molec
170 amide macrocycle around the axle to form [2]rotaxanes in up to 85% yield; the corresponding Z-hydraz
171 para-xylylene bridge (2 and 3) gave pseudo[2]rotaxanes in which one dialkylammonium axle (4a-4e(+)) w
174 The change from tetra- to dicationic [2]rotaxanes increased not only the fluidity of their smect
176 o link hybrid organic-inorganic [2]- and [3]-rotaxanes into still larger [4]-, [5]- and [7]-rotaxanes
177 lar switching devices, such as catenanes and rotaxanes; ion-channels by ligand gating; gelators for s
178 e hosts reveals the strong binding by the XB-rotaxane is driven exclusively by favourable enthalpic c
179 up to five times more of the fully saturated rotaxane is formed than is predicted based on a purely s
184 alogen-bonding and hydrogen-bonding bistable rotaxane is prepared and demonstrated to undergo shuttli
185 teraction between the hexayne chains, the [3]rotaxane is remarkably stable under ambient conditions,
186 ion experiments revealed the halogen bonding rotaxane is selective for nitrate over the more basic ac
188 state for aminocatalysis by a switchable [2]rotaxane is shown to correspond to an "on" state for ani
193 nterlocked molecules (MIMs) - in particular, rotaxanes - its slow reaction rate and narrow substrate
196 reover, the usefulness of these novel copper-rotaxane materials as molecular dosing containers has al
197 thus affords two different three-station [2]rotaxane molecular machines, in which some of co-conform
200 eparation and dynamic behavior of degenerate rotaxane molecular shuttles are described in which a ben
204 he amount of fuel added, the lifetime of the rotaxane ON-state can be regulated and temporal control
205 crocycles and the corresponding benzyl ether rotaxanes on gold substrates is investigated for the fir
209 dibutylamino groups as stoppers yielded the rotaxane precursor in a reasonable yield and allowed the
210 ers of NU-1000 and carboxylic acid groups of rotaxane precursors (semirotaxanes) as part of this buil
211 ses the yield of the target heterocircuit [3]rotaxane product at the expense of other threaded specie
213 cular DNA nanostructures, e.g., catenanes or rotaxanes, provide functional materials within the area
214 phic analysis on six [2]rotaxanes and two [3]rotaxanes provides insight into the noncovalent interact
215 the macrocycle during the elongation of the rotaxane provokes the accumulation of tensile and torsio
218 unmasking, whereas photolysis of the indane rotaxane results in unmasking of the polyyne thread to f
221 The X-ray crystal structures of the E- and Z-rotaxanes show different intercomponent hydrogen bonding
222 The crystal structure of one of these [3]rotaxanes shows that there is extremely close contact be
223 steric speed bumps has been demonstrated in rotaxane shuttles and macrocycle threading systems, the
225 vage of the peptide with trypsin led to a [2]rotaxane structure that self-assembled into a [3]catenan
227 eversible reconfiguration of the catenane or rotaxane structures provides a means to yield new DNA sw
228 yclic components in interlocked catenane and rotaxane structures, for constructing assemblies based o
229 -temperature (1)H NMR study in DMSO-d6 of [2]rotaxane supported the kinetic inertness of the interloc
231 of electrochemically bistable 'daisy chain' rotaxane switches based on a derivative of the so-called
232 ons, we converted CB6 click chemistry from a rotaxane synthesis tool into a useful bioconjugation tec
237 ble spin labeled alpha-cyclodextrin-based [2]rotaxane that is characterized by the presence of nitrox
238 the multistep assembly of large DNA origami rotaxanes that are capable of programmable structural sw
241 wo sites do not communicate, and that in the rotaxane the transfer of information between them is mad
242 raversed from the [3]- to the [4]- to the [5]rotaxane, the cooperativity becomes increasingly positiv
243 ith more conventional bistable catenanes and rotaxanes, the mechanical movement of the ring between r
244 mple and effective route to a broad range of rotaxanes, the strategy enables 1:1 interactions of crow
245 xayne (tau = 3.0 ps), whereas in the rhenium-rotaxane there is triplet EET, from the macrocycle compl
249 ort on the active template synthesis of a [2]rotaxane through a Goldberg copper-catalyzed C-N bond fo
250 rmationally restricted chiral cavities of [2]rotaxanes to achieve enantioselective anion recognition.
253 n nanocomposites embedding a self-assembling rotaxane-type system that is responsive to both optical
257 ical dissociation of an ammonium/crown ether rotaxane using experimental (sonication) and computation
261 adiation of 1 subset2a, a kinetically labile rotaxane was obtained on irradiating the complex 1 subse
265 onium with different sizes, a novel hetero[4]rotaxane was successfully prepared by employing the comb
266 ired by these findings, a self-immolative [2]rotaxane was then designed that self-destructs in the pr
267 mplicated chemical structure of the hetero[4]rotaxane was well-characterized by (1)H NMR spectroscopy
269 data of the shuttling behavior in the C(26) rotaxane were obtained from dynamic NMR spectroscopy.
273 the R' series, the [3]-, [4]-, [8]-, and [12]rotaxanes were isolated after reaction times of <5-30 mi
274 3]-, [4]-, [5]-, [8]-, [12]-, [16]-, and [20]rotaxanes were isolated in <5 min to 14 h in 88-98% yiel
275 e also obtained from the reactions but no [2]rotaxanes were isolated, suggesting that upon demetalati
278 amine macrocycle directs the assembly of the rotaxane, which can subsequently serve as a ligand for e
279 zed two structure-switching behaviors of our rotaxanes, which are both mediated by DNA hybridization.
281 g strategies are used to prepare nanohoop [2]rotaxanes, which owing to the pai-rich macrocycle are hi
282 In addition to the topologically trivial rotaxanes, whose structures may be captured by a planar
284 in unmasking of the polyyne thread to form a rotaxane with a chain of 16 sp-hybridized carbon atoms.
285 g by ~70% compared to a structurally similar rotaxane with an all-alkane thread of the same length.
286 ecular interaction of the positively charged rotaxane with optically active anions causes an imbalanc
287 enation of permanently interlocked squaraine rotaxanes with anthracene-containing macrocycles produce
289 velopment of triptycene-containing squaraine rotaxanes with high fluorescence quantum yields and larg
290 t the assembly line-like emergence of poly[n]rotaxanes with increasingly higher energies by harnessin
292 architecture should prove useful to connect rotaxanes with polymers and surfaces for applications in
293 e synthesis of oligomeric homo- and hetero[n]rotaxanes with precise control over the position of each
294 the synthesis of main chain oligonucleotide rotaxanes with precise control over the position of the
295 This methodology has been used to prepare [3]rotaxanes with two polyyne chains locked through the sam
298 nterlocked photoproduct (Phi = 0.06) is a [2]rotaxane, with the dimerized anthracenes assuming a head
300 pies all confirm the capture of redox-active rotaxanes within the mesoscale hexagonal channels of NU-