ORCID Profile
0000-0002-3741-7454
Current Organisations
University of Oxford
,
Oxford Nanoimaging
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Publisher: American Chemical Society (ACS)
Date: 04-01-2018
DOI: 10.1021/JACS.7B10542
Abstract: We have employed the scanning tunneling microscope break-junction technique to investigate the single-molecule conductance of a family of 5,15-diaryl porphyrins bearing thioacetyl (SAc) or methylsulfide (SMe) binding groups at the ortho position of the phenyl rings (S2 compounds). These ortho substituents lead to two atropisomers, cis and trans, for each compound, which do not interconvert in solution under ambient conditions even at high temperatures, isomerization takes several hours (half-life 15 h at 140 °C for SAc in C
Publisher: Wiley
Date: 20-11-2015
Publisher: American Chemical Society (ACS)
Date: 26-07-2016
Publisher: Springer Science and Business Media LLC
Date: 02-07-2018
Publisher: Springer Science and Business Media LLC
Date: 26-07-2017
Publisher: American Chemical Society (ACS)
Date: 13-10-2020
DOI: 10.26434/CHEMRXIV.13073231
Abstract: Polyyne polyrotaxanes, encapsulated cyclocarbon catenanes and other fascinating mechanically interlocked carbonrich architectures should become accessible if masked alkyne equivalents (MAEs) can be developed that are large enough to prevent unthreading of a macrocycle, and that can be cleanly unmasked under mild conditions. Here we report the synthesis of a new bulky MAE based on a t-butylbicyclo[4.3.1]decatriene. This MAE was used to synthesize a polyyne [2]rotaxane and a maskedpolyyne [3]rotaxane by Cadiot-Chodkiewicz coupling. Glaser cyclooligomerization of the [2]rotaxane gave masked cyclocarbon catenanes. The unmasking behavior of the catenanes and rotaxanes was tested by photolysis at a range of UV wavelengths. Photochemical unmasking did not proceed cleanly enough to prepare extended encapsulated polyyne polyrotaxanes. We highlight the scope and challenges involved with this approach to interlocked carbon-rich architectures.
Publisher: American Chemical Society (ACS)
Date: 07-02-2018
Abstract: Extended triisopropylsilyl end-capped polyynes have been prepared from the corresponding tetracobalt complexes by removing the complexed dicobalt tetracarbonyldiphenylphosphinomethane (Co
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8DT05036H
Abstract: The salts Na[H 2 B(tt tBu ) 2 ] and Na[HB(tt tBu ) 3 ] (tt tBu = 1-tert.butyl-5-thiotetrazole have been used to provide the new metallaboratranes [Ru(CO)(PPh 3 ){κ 4 - B , S , S ′, S ′′-B(tt tBu ) 3 }], [IrH(CO)(PPh 3 ){κ 3 - B , S , S ′-BH(tt tBu ) 2 }] and [Ru(CO)(PPh 3 ) 2 {κ 3 - B , S , S ′-BH(tt tBu ) 2 }].
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8SC00130H
Abstract: We demonstrate that a photochromic spironaphthoxazine switch operates with excellent fatigue resistance and high conversion when irradiated at 405/561 nm in a range of media including living cells.
Publisher: American Chemical Society (ACS)
Date: 23-09-2015
Publisher: American Chemical Society (ACS)
Date: 13-10-2020
DOI: 10.26434/CHEMRXIV.13073231.V1
Abstract: Polyyne polyrotaxanes, encapsulated cyclocarbon catenanes and other fascinating mechanically interlocked carbonrich architectures should become accessible if masked alkyne equivalents (MAEs) can be developed that are large enough to prevent unthreading of a macrocycle, and that can be cleanly unmasked under mild conditions. Here we report the synthesis of a new bulky MAE based on a t-butylbicyclo[4.3.1]decatriene. This MAE was used to synthesize a polyyne [2]rotaxane and a maskedpolyyne [3]rotaxane by Cadiot-Chodkiewicz coupling. Glaser cyclooligomerization of the [2]rotaxane gave masked cyclocarbon catenanes. The unmasking behavior of the catenanes and rotaxanes was tested by photolysis at a range of UV wavelengths. Photochemical unmasking did not proceed cleanly enough to prepare extended encapsulated polyyne polyrotaxanes. We highlight the scope and challenges involved with this approach to interlocked carbon-rich architectures.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5CS00105F
Abstract: Cascade (domino) reactions have an unparalleled ability to generate molecular complexity from relatively simple starting materials these transformations are particularly appealing when multiple rings are forged during this process.
Publisher: American Chemical Society (ACS)
Date: 07-07-2017
Publisher: Wiley
Date: 21-01-2021
Publisher: Wiley
Date: 21-01-2021
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
Start Date: 2014
End Date: 2022
Funder: Engineering and Physical Sciences Research Council
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