Imperial College London

PROFESSOR CHARLOTTE K. WILLIAMS

Faculty of Natural SciencesDepartment of Chemistry

Visiting Professor
 
 
 
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Contact

 

+44 (0)20 7594 5790c.k.williams Website

 
 
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Location

 

317 RCS1ChemistrySouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

167 results found

Trott G, Garden JA, Williams CK, 2019, Heterodinuclear zinc and magnesium catalysts for epoxide/CO2 ring opening copolymerizations, CHEMICAL SCIENCE, Vol: 10, Pages: 4618-4627, ISSN: 2041-6520

JOURNAL ARTICLE

Lim JYC, Yuntawattana N, Beer PD, Williams CKet al., 2019, Isoselective Lactide Ring Opening Polymerisation using [2]Rotaxane Catalysts, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 58, Pages: 6007-6011, ISSN: 1433-7851

JOURNAL ARTICLE

Pankhurst JR, Paul S, Zhu Y, Williams CK, Love JBet al., 2019, Polynuclear alkoxy-zinc complexes of bowl-shaped macrocycles and their use in the copolymerisation of cyclohexene oxide and CO2., Dalton Trans, Vol: 48, Pages: 4887-4893

The reactions between alcohols and the tetranuclear ethyl-Zn complexes of an ortho-phenylene-bridged polypyrrole macrocycle, Zn4Et4(L1) 1 and the related anthracenyl-bridged macrocyclic complex, Zn4Et4(THF)4(L2) 2 have been studied. With long-chain alcohols such as n-hexanol, the clean formation of the tetranuclear hexoxide complex Zn4(OC6H13)4(L1) 3 occurs. In contrast, the use of shorter-chain alcohols such as i-propanol results in the trinuclear complex Zn3(μ2-OiPr)2(μ3-OiPr)(HL1) 4 that arises from demetalation; this complex was characterised by X-ray crystallography. The clean formation of these polynuclear zinc clusters allowed a study of their use as catalysts in the ring-opening copolymerisation (ROCOP) reaction between cyclohexene oxide and CO2. In situ reactions involving the pre-catalyst 1 and n-hexanol formed the desired polymer with the best selectivity for polycarbonate (90%) at 30 atm CO2, whilst the activity and performance of pre-catalyst 2 was poor in comparison.

JOURNAL ARTICLE

Zhu Y, Poma A, Rizzello L, Gouveia VM, Ruiz-Perez L, Battaglia G, Williams CKet al., 2019, Metabolically Active, Fully Hydrolysable Polymersomes, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 58, Pages: 4581-4586, ISSN: 1433-7851

JOURNAL ARTICLE

Kennedy OW, White ER, Howkins A, Williams CK, Boyd IW, Warburton PA, Shaffer MSPet al., 2019, Mapping the Origins of Luminescence in ZnO Nanowires by STEM-CL, JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Vol: 10, Pages: 386-392, ISSN: 1948-7185

JOURNAL ARTICLE

Stoesser T, Mulryan D, Williams CK, 2018, Switch Catalysis To Deliver Multi-Block Polyesters from Mixtures of Propene Oxide, Lactide, and Phthalic Anhydride, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 57, Pages: 16893-16897, ISSN: 1433-7851

JOURNAL ARTICLE

Deacy AC, Durr CB, Garden JA, White AJP, Williams CKet al., 2018, Groups 1, 2 and Zn(II) Heterodinuclear Catalysts for Epoxide/CO2 Ring-Opening Copolymerization, INORGANIC CHEMISTRY, Vol: 57, Pages: 15575-15583, ISSN: 0020-1669

JOURNAL ARTICLE

Durr CB, Williams CK, 2018, New Coordination Modes for Modified Schiff Base Ti(IV) Complexes and Their Control over Lactone Ring-Opening Polymerization Activity, INORGANIC CHEMISTRY, Vol: 57, Pages: 14240-14248, ISSN: 0020-1669

JOURNAL ARTICLE

Regoutz A, Kerherve G, Villar-Garcia I, Williams CK, Payne DJet al., 2018, The influence of oxygen on the surface interaction between CO2 and copper studied by ambient pressure X-ray photoelectron spectroscopy, SURFACE SCIENCE, Vol: 677, Pages: 121-127, ISSN: 0039-6028

JOURNAL ARTICLE

Chen TTD, Zhu Y, Williams CK, 2018, Pentablock Copolymer from Tetracomponent Monomer Mixture Using a Switchable Dizinc Catalyst, MACROMOLECULES, Vol: 51, Pages: 5346-5351, ISSN: 0024-9297

JOURNAL ARTICLE

Thevenon A, Cyriac A, Myers D, White AJP, Durr CB, Williams CKet al., 2018, Indium Catalysts for Low-Pressure CO2/Epoxide Ring-Opening Copolymerization: Evidence for a Mononuclear Mechanism?, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 140, Pages: 6893-6903, ISSN: 0002-7863

JOURNAL ARTICLE

Stoesser T, Williams CK, 2018, Selective Polymerization Catalysis from Monomer Mixtures: Using a Commercial Cr-Salen Catalyst To Access ABA Block Polyesters, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 57, Pages: 6337-6341, ISSN: 1433-7851

JOURNAL ARTICLE

Zhu Y, Radlauer MR, Schneiderman DK, Shaffer MSP, Hillmyer MA, Williams CKet al., 2018, Multiblock Polyesters Demonstrating High Elasticity and Shape Memory Effects, MACROMOLECULES, Vol: 51, Pages: 2466-2475, ISSN: 0024-9297

JOURNAL ARTICLE

Leung AHM, Pike SD, Clancy AJ, Yau HC, Lee WJ, Orchard KL, Shaffer MSP, Williams CKet al., 2018, Layered zinc hydroxide monolayers by hydrolysis of organozincs, CHEMICAL SCIENCE, Vol: 9, Pages: 2135-2146, ISSN: 2041-6520

JOURNAL ARTICLE

Stosser T, Chen TTD, Zhu Y, Williams CKet al., 2018, 'Switch' catalysis: from monomer mixtures to sequence-controlled block copolymers, PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Vol: 376, ISSN: 1364-503X

JOURNAL ARTICLE

Garcia-Trenco A, Regoutz A, White ER, Payne DJ, Shaffer MSP, Williams CKet al., 2018, PdIn intermetallic nanoparticles for the Hydrogenation of CO2 to Methanol, APPLIED CATALYSIS B-ENVIRONMENTAL, Vol: 220, Pages: 9-18, ISSN: 0926-3373

JOURNAL ARTICLE

Stosser T, Li C, Unruangsri J, Saini PK, Sablong RJ, Meier MAR, Williams CK, Koning Cet al., 2017, Bio-derived polymers for coating applications: comparing poly(limonene carbonate) and poly (cyclohexadiene carbonate), POLYMER CHEMISTRY, Vol: 8, Pages: 6099-6105, ISSN: 1759-9954

JOURNAL ARTICLE

Myers D, Witt T, Cyriac A, Bown M, Mecking S, Williams CKet al., 2017, Ring opening polymerization of macrolactones: high conversions and activities using an yttrium catalyst, POLYMER CHEMISTRY, Vol: 8, Pages: 5780-5785, ISSN: 1759-9954

JOURNAL ARTICLE

Pike SD, Garcia-Trenco A, White ER, Leung AHM, Weiner J, Shaffer MSP, Williams CKet al., 2017, Colloidal Cu/ZnO catalysts for the hydrogenation of carbon dioxide to methanol: investigating catalyst preparation and ligand effectst, CATALYSIS SCIENCE & TECHNOLOGY, Vol: 7, Pages: 3842-3850, ISSN: 2044-4753

JOURNAL ARTICLE

Romain C, Garden JA, Trott G, Buchard A, White AJP, Williams CKet al., 2017, Di-Zinc-Aryl Complexes: CO2 Insertions and Applications in Polymerisation Catalysis, CHEMISTRY-A EUROPEAN JOURNAL, Vol: 23, Pages: 7367-7376, ISSN: 0947-6539

JOURNAL ARTICLE

Marafie JA, Bradley DDC, Williams CK, 2017, Thermally Stable Zinc Disalphen Macrocycles Showing Solid-State and Aggregation-Induced Enhanced Emission, INORGANIC CHEMISTRY, Vol: 56, Pages: 5688-5695, ISSN: 0020-1669

JOURNAL ARTICLE

Myers D, White AJP, Forsyth CM, Bown M, Williams CKet al., 2017, Phosphasalen Indium Complexes Showing High Rates and Isoselectivities in rac-Lactide Polymerizations, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 56, Pages: 5277-5282, ISSN: 1433-7851

JOURNAL ARTICLE

Saini PK, Fiorani G, Mathers RT, Williams CKet al., 2017, Zinc versus Magnesium: Orthogonal Catalyst Reactivity in Selective Polymerizations of Epoxides, Bio-derived Anhydrides and Carbon Dioxide, CHEMISTRY-A EUROPEAN JOURNAL, Vol: 23, Pages: 4260-4265, ISSN: 0947-6539

JOURNAL ARTICLE

Pike SD, White ER, Regoutz A, Sammy N, Payne DJ, Williams CK, Shaffer MSPet al., 2017, Reversible Redox Cycling of Well-Defined, Ultrasmall Cu/Cu2O Nanoparticles, ACS NANO, Vol: 11, Pages: 2714-2723, ISSN: 1936-0851

JOURNAL ARTICLE

Garden JA, White AJP, Williams CK, 2017, Heterodinuclear titanium/zinc catalysis: synthesis, characterization and activity for CO2/epoxide copolymerization and cyclic ester polymerization, DALTON TRANSACTIONS, Vol: 46, Pages: 2532-2541, ISSN: 1477-9226

JOURNAL ARTICLE

Garcia-Trenco A, White ER, Regoutz A, Payne DJ, Shaffer MSP, Williams CKet al., 2017, Pd2Ga-Based Colloids as Highly Active Catalysts for the Hydrogenation of CO2 to Methanol, ACS CATALYSIS, Vol: 7, Pages: 1186-1196, ISSN: 2155-5435

JOURNAL ARTICLE

Saini PK, Williams CK, 2017, Polymerisation catalysis using CO<inf>2</inf>: Dinuclear homogeneous catalysts, Modern Developments in Catalysis, Pages: 159-180, ISBN: 9781786341211

BOOK CHAPTER

Zhu Y, Romain C, Williams CK, 2016, Sustainable polymers from renewable resources, NATURE, Vol: 540, Pages: 354-362, ISSN: 0028-0836

JOURNAL ARTICLE

Pike SD, White ER, Shaffer MSP, Williams CKet al., 2016, Simple phosphinate ligands access zinc clusters identified in the synthesis of zinc oxide nanoparticles, NATURE COMMUNICATIONS, Vol: 7, ISSN: 2041-1723

JOURNAL ARTICLE

Sehmi SK, Noimark S, Pike SD, Bear JC, Peveler WJ, Williams CK, Shaffer MSP, Allan E, Parkin IP, MacRobert AJet al., 2016, Enhancing the Antibacterial Activity of Light-Activated Surfaces Containing Crystal Violet and ZnO Nanoparticles: Investigation of Nanoparticle Size, Capping Ligand, and Dopants, ACS OMEGA, Vol: 1, Pages: 334-343, ISSN: 2470-1343

JOURNAL ARTICLE

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