Chemistry (Scholarly Publications): Recent submissions
Now showing items 881-900 of 931
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Luminescent sensing and formation of mixed f-d metal ion complexes between a Eu(iii)-cyclen-phen conjugate and Cu(ii), Fe(ii), and Co(ii) in buffered aqueous solution
(Royal Society of Chemistry, 2009)The synthesis and photophysical properties of the Eu(III) complex 1.Eu, based on the use of 1,10-phenanthroline (phen) as a combined sensitizing antenna and a transition metal ion coordinating ligand, is described. The ... -
The recognition of anions using delayed lanthanide luminescence: the use of Tb(iii) based urea functionalised cyclen complexes
(Royal Society of Chemistry, 2009)A cyclen based lanthanide luminescent sensor, Tb.1, has been developed by taking advantage of a combination of hydrogen bonding and f-metal ion coordination binding sites for anionic species. Analysis of the ground state, ... -
Lanthanide luminescent gold nanoparticles: pH-driven self-assembly formation between Eu(III)-cyclen conjugated AuNPs and sensitising β-diketonate antenna in water
(2009)The formation of a self-assembly between water soluble gold nanoparticles AuNP-1.Eu, functionalised with a heptadentate macrocyclic Eu(III) cyclen conjugate via an alkyl thiol spacer, and a naphthalene -diketone antenna ... -
Fluorescence imaging of bone cracks (microdamage) using visibly emitting 1,8-naphthalimide-based PET sensors
(2009)The ability of two 4-amino-1,8-naphthalimides (1 and 2) and anthracene (3) based photoinduced electron transfer (PET) sensors, previously developed in our laboratory, to function as selective imaging agents for exposed ... -
Demonstration of bidirectional photoinduced electron transfer (PET) sensing in 4-amino-1,8-naphthalimide based thiourea anion sensors
(2009)The thiourea based 4-amino-1,8-naphthalimide molecules 1-5 were designed as fluorescent anion sensors and their photophysical properties investigated upon recognition of biologically relevant anions such as acetate, ... -
Luminescent self-assembly formation on a gold surface observed by reversible 'off-on' switching of Eu(III) emission
(2009)The formation of a self-assembly between a sensitising antenna and an Eu(III) functionalised cyclen complex 1.Eu, tethered to a gold surface via a C(12) alkyl thiol spacer, is described where changes in the Eu(III) emission ... -
Modeling the polaronic nature of p-type defects in Cu2O: The failure of GGA and GGA plus U
(2009)Cuprous oxide (Cu2O) is an abundant, low cost, nontoxic semiconductor material with a direct band gap of 2.17 eV.1 Interest in this prototypical p-type conducting oxide is due to its potential use for photovoltaic powercell ... -
Acceptor Levels in p-Type Cu2O: Rationalizing Theory and Experiment
(2009)Understanding conduction in Cu2O is vital to the optimization of Cu-based p-type transparent conducting oxides. Using a screened hybrid?density-functional approach we have investigated the formation of p-type defects in ... -
Intermolecular interactions of extended aromatic ligands: the synchrotron molecular structure of [Ru(bpy)2(N-HSB)].2PF6 and [Ru(bpy)2(N-1/2HSB)].2PF6
(Royal Society of Chemistry, 2006)The processes by which molecular systems undergo aggregation have received much attention because they are key to the delivery of pre-determined supramolecular structures at the molecular design stage. The intermolecular ... -
Rhodium and Palladium Complexes of a Pyridyl-centred Polyphenylene.
(2008)2-(2? pyridyl)-3,4,5,6-tetraphenylpyridine 2 (HL), a ligand with both N,N-bidentate and N,N,C-terdentate coordination potential, was prepared in excellent yield by the Diels-Alder [2+4] cycloaddition of 2-cyanopyridine and ... -
'Robust Self-Assembled Monolayers of Ru(II) and Os(II) Polypyridines on Gold Surfaces: Exploring New Potentials'
(2009)Metal complexes [M(phtpy)(pztpy)](PF6)2 (phtpy = 4'-phenyl-2,2':6',2"-terpyridine, pztpy = 4'-(Npiperazinyl)- 2,2':6',2"-terpyridine, M = Ru, Os) were prepared and examined spectroscopically and electrochemically. The ... -
Symmetry and Beauty in Plato
(2010)Plato writes about Beauty in many of his dialogues, particularly in the Symposium, but he has no word equivalent to our "Symmetry", and this concept was not then formalised. Nevertheless, there are indications that some ... -
Functionalization of Single Walled Carbon Nanotubes with Optically Switchable Spiropyrans
(2010)The design, synthesis and complete characterization of a smart material composed of single-walled nanotubes functionalized with spiropyran-based photo switchable molecules are reported. The chemical complexity of the system ... -
Spectroscopic changes induced by sonication of porphyrin-carbon nanotube composites in chlorinated solvents
(2007)We report the spectroscopic changes of tetraphenylporphyrin carbon nanotube composites in a variety of chlorinated solvents such as chloroform, dichloroethane and dichlorobenzene as a result of sonication. Detailed data ... -
Sonication of porphyrin-nanotube composites: a cautionary tale
(2007)We report the spectroscopic changes of tetraphenylporphyrin carbon nanotube composites in a variety of chlorinated solvents such as chloroform, dichloroethane and dichlorobenzene as a result of sonication. Detailed data ... -
The balance between closed and open forms of spiropyrans in the solid state
(2010)We present three new crystal structures of members from the photochromic spiropyran family, including a rare example of an open (merocyanine) form. The molecular structures are systematically compared with existing ... -
Spectroscopy of Single-Walled Carbon Nanotubes in Aqueous Surfactant Dispersion
(2009)Optical studies of single-walled carbon nanotubes (SWNTs) dispersed in aqueous surfactant suspensions have made significant progress since the discovery of their bright band-gap fluorescence in the near-infrared region ... -
Effect of carbon nanotube surface modification on dispersion and structural properties of electrospun fibers
(2009)Covalent surface modification of multiwall carbon nanotubes leads to enhanced nanotube dispersion in the polymer. Despite this, the mechanical properties of electrospun fibers made of polymethylmethacrylate containing ... -
Spectroscopic characterization of chemically modified porous silicon
(SPIE, 2003)The discovery of room temperature photoluminescence in porous silicon has opened up a range of applications for this material in new areas such as optical, photodetector, photovoltaic, micromachine and sensors. For this ... -
Synthesis and photochemical studies of Cu(I) complex with 1,4-bis(3,5-dimethylpyrazol-1yl)tetrazine ligand
(SPIE, 2005)This work reports synthesis and photochemical studies of 3,6-Bis(3,5-dimethylpyrazol-1-yl)-tetrazine ligand (dmptz) and its Cu(I) complex. Dmptz was found to be an excellent bridging ligand for Cu(I) complexes. The Cu(I) ...
