A5065772655- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Crystallography and molecular interactions
- Supramolecular Chemistry and Complexes
- Organic Electronics and Photovoltaics
- Luminescence and Fluorescent Materials
- Conducting polymers and applications
- Molecular Sensors and Ion Detection
- Organic Light-Emitting Diodes Research
- Porphyrin and Phthalocyanine Chemistry
- Molecular Junctions and Nanostructures
- Chemical Synthesis and Analysis
- Supramolecular Self-Assembly in Materials
- Magnetism in coordination complexes
- Fullerene Chemistry and Applications
- Surface Chemistry and Catalysis
- Graphene research and applications
- Photochemistry and Electron Transfer Studies
- Mass Spectrometry Techniques and Applications
- Click Chemistry and Applications
- Synthesis and Properties of Aromatic Compounds
- Advanced Physical and Chemical Molecular Interactions
- Software Engineering Research
- Synthesis and properties of polymers
- Software Reliability and Analysis Research
Queensland University of Technology
2015-2025
Technology Centre Prague
2025
Brisbane School of Theology
2016-2021
Columbia University
2017-2020
University of Oxford
2009-2017
Max Planck Institute for Polymer Research
2001-2017
Axiom (United States)
2013-2017
Science Oxford
2017
University of Edinburgh
2010-2012
Daresbury Laboratory
2009-2010
Bromide is best: The first [2]rotaxane incorporating the triazolium anion-binding motif prepared using bromide anion templation. Preliminary investigations reveal that rotaxane exhibits rare selectivity preference for over chloride ions.
The quantum efficiency of fluorescent light emitting diodes is limited by the occurrence non-radiative decay triplet states. It therefore important to improve understanding first excited state, its lifetime, and population depopulation mechanisms. variation characteristics this state with chemical structure are examined for a series conjugated polymers aim improving performance organic LEDs.
The synthesis of unconventional extended π-systems is described in an attempt to tailor the structures organic compounds for specific optical and electrical properties. In order emphasize role π-conjugation correlate chemical structure physical function both one-dimensional arylenevinylenes two-dimensional ribbon-type molecules are considered. former aryl-olefin coupling according Heck special value, latter achieved by repetitive Diels-Alder cycloadditions two-step processes which carefully...
Sulfate templation has been used in the synthesis of a novel tris-urea-based triply interlocked capsule, whose structure verified by DOSY NMR, mass spectrometry and molecular modelling investigations.
The dynamics of optically generated excitations in a poly-(para)-phenylene--type ladder polymer has been investigated by means femtosecond pump-probe as well luminescence up-conversion spectroscopy. In addition to the bulk emission low-energy band assigned physical aggregates is observed. By comparing photoluminescence (PL) decay with time-resolved PL traces aggregate we show that presence initially excitons are determined transfer from states. Additionally stimulated (SE) photoinduced...
We report on the use of hydrogen bond acceptor properties some phosphorus-containing functional groups for assembly a series [2]rotaxanes. Phosphinamides, and homologous thio– selenophosphinamides, act as acceptors that, in conjunction with an appropriately positioned amide group thread, direct amide-based macrocycles around axle to form rotaxanes up 60% yields. Employing solely phosphorus-based accepting bis(phosphinamide) template phosphine oxide–phosphinamide afforded corresponding 18 15%...
We report on the use of hydrogen-bond-accepting properties neutral nitrone moieties to prepare benzylic amide macrocycle-containing [2]rotaxanes in yields as high 70%. X-ray crystallography showed presence up four intercomponent hydrogen bonds between groups macrocycle and two thread. Dynamic (1)H NMR studies rates pirouetting nonpolar solutions indicated that amide-nitrone are particularly strong (approximately 1.3 approximately 0.2 kcal mol(-1) stronger than similar amide-ester amide-amide...
Traditional methods of assembling low‐symmetry heterometallic cage architectures are limited to stepwise construction and combinations inert labile metal ions, affording complex, anisotropic structures by sacrificing synthetic ease. Herein, a [Cu2PdL4]2+ lantern‐type has been assembled in single self‐assembly step through the use heteroditopic ligand with two different metal‐binding groups. The resultant complex is fusion common motifs – carboxylate‐based metal–organic Cu4L4 cages...
Traditional methods of assembling low‐symmetry heterometallic cage architectures are limited to stepwise construction and combinations inert labile metal ions, affording complex, anisotropic structures by sacrificing synthetic ease. Herein, a [Cu2PdL4]2+ lantern‐type has been assembled in single self‐assembly step through the use heteroditopic ligand with two different metal‐binding groups. The resultant complex is fusion common motifs – carboxylate‐based metal–organic Cu4L4 cages...
This paper describes some approaches toward the templated synthesis of rotaxanes incorporating strapped metalloporphyrin moieties as shuttle unit, with thread component containing both a neutral diimide "station" and functionalized pyridine moiety, latter acting not only template but also second binding motif. In first instance, use appropriately 3,5-difunctionalized esters naphthoquinol-strapped rhodium(III) chloride porphyrins in stoppering approach to produced unlinked components:...
The design, synthesis, structure, and anion-binding properties of the first indolocarbazole-containing interlocked structure are described. novel [2]rotaxane molecular incorporates a neutral axle component which is encircled by tetracationic macrocycle functionalized with an isophthalamide anion recognition motif. (1)H NMR UV-visible spectroscopies X-ray crystallography demonstrated importance pi-donor-acceptor, CH...pi, electrostatic interactions in assembly pseudorotaxanes between...
We demonstrate that graphene-based transparent and conductive thin films (GTCFs), fabricated by thermal reduction of graphite oxide, have very similar electronic structural properties as highly oriented pyrolytic (HOPG). Electron spectroscopy results suggest the GTCFs are also semi-metallic individual graphene sheets film predominantly parallel to substrate plane. These may therefore be considered a technologically relevant analogue HOPG electrodes, which cannot easily processed into films.
We report on the synthesis, structure and properties of [2]rotaxanes prepared by assembly benzylic amide macrocycles around a series sulfide-/sulfoxide-/sulfone-containing threads. The efficacy rotaxane formation is related to hydrogen bond accepting various sulfur-containing functional groups in thread, with highest yields (up 63% rigid vinyl spacer template site) obtained for sulfoxide rotaxanes. X-Ray crystallography rotaxane, 5, shows that macrocycle adopts highly symmetrical chair-like...
Charge of the light brigade: A molecule is able to walk back and forth upon a five-foothold pentaethylenimine track without external intervention. The 1D random highly processive (mean step number 530) exchange takes place between adjacent amine groups in stepwise fashion. walker performs simple task whilst walking: quenching fluorescence an anthracene group sited at one end track.
Coordination cages can be used for enantio- and regioselective catalysis the selective sensing separation of isomeric guest molecules. Here, stereoisomers a family coordination are resolved using ultra-high-resolution cyclic ion-mobility mass spectrometry (cIM-MS). The observed ratio diastereomers is dependent on both metal ion counter ion. Moreover, point groups assigned through complementary NMR experiments. This method enables identification interrogation individual isomers in complex...