Výsledky vyhledávání - "Christopher S. Colley"

Probing the Reactivity of Photoinitiators for Free Radical Polymerization: Time-Resolved Infrared Spectroscopic Study of Benzoyl Radicals

Autor: Michael W. George, Christopher S. Colley, Steffen Jockusch, Pavel Matousek, Nicholas J. Turro, Peter Gill, Anthony W. Parker, Nicholas A. Besley, Michael Towrie, David C. Grills

Publikováno v: Journal of the American Chemical Society. 124:14952-14958

A series of substituted benzoyl radicals has been generated by laser flash photolysis of alpha-hydroxy ketones, alpha-amino ketones, and acyl and bis(acyl)phosphine oxides, all of which are used commercially as photoinitiators in free radical polymer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d875f4b56eb3ad6b08ae48a53cbc18b
https://doi.org/10.1021/ja026099m

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Nanosecond Time-Resolved Step-Scan FT-IR Spectroscopy in Conventional and Supercritical Fluids Using a Four-Window Infrared Cell

Autor: Michael W. George, Christopher S. Colley, Xue Z. Sun, Sergei M. Nikiforov, Jixin Yang

Publikováno v: Applied Spectroscopy. 56:31-39

Fast time-resolved step-scan FT-IR (s2–FT-IR) has been used to study excited states and reaction intermediates in conventional and supercritical solvents. We have developed a four-port IR cell for s2–FT-IR measurements. The generation of W(CO)5(X

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee840a39994d37f538be3c20a5443db0
https://doi.org/10.1366/0003702021954403

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Investigation into the reactivity of M(η5-C5R5)(CO)2(alkane) (M = Mn or Re; R = H, Me or Ph; alkane = n-heptane or cyclopentane) and Re(η5-C5H5)(CO)2(Xe) in solution at cryogenic and room temperature

Autor: Xue-Zhong Sun, David C. Grills, Joanne Dyer, Gavin I. Childs, Jixin Yang, Michael W. George, Christopher S. Colley

Publikováno v: Journal of the Chemical Society, Dalton Transactions. :1901-1906

A series of M(η5-C5R5)(CO)2(C5H10) complexes (R = H, Me or Ph; M = Mn or Re) have been characterised at low (Re only) and room temperature (R = H only) using infrared spectroscopy. The decay rates of these complexes have been measured and compared t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02b42384c0eece6d15255ae5472dbc36
https://doi.org/10.1039/b001987i

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Broadband quantum cascade lasers and superluminescent diodes

Autor: Wing H. Ng, Christopher S. Colley, Kristian M. Groom, E. A. Zibik, David T. Delpy, Luke R. Wilson, Mark Hopkinson, Jeremy C. Hebden, M. R. Soulby, John W. Cockburn

Publikováno v: 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.

We report broadband quantum cascade lasers emitting over a range of 6 to 8 mum at 77 K and having Jth=4.6 kA/cm2 at 300 K. Superluminescent diodes utilizing the same design will also be described.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d95926f425c25c2cee6342af975b390c
https://doi.org/10.1109/cleo.2006.4628191

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Mid-Infrared Optical Coherence Tomography: Application in Tissue Engineering

Autor: Luke R. Wilson, Mark Hopkinson, E. A. Zibik, David T. Delpy, Kristian M. Groom, John W. Cockburn, Christopher S. Colley, Wing H. Ng, Jeremy C. Hebden

Publikováno v: Biomedical Optics.

The world's first mid-infrared optical coherence tomography (MIR-OCT) system is introduced. It utilizes custom-built quantum cascade lasers as broadband MIR sources and has been designed to characterize the structure and biochemical content of bioeng

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e6e93b1ad79c4d0b49883bcf8cd7a2f2
https://doi.org/10.1364/bio.2006.we8

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Steady state and time-resolved IR spectroscopy of the native and unfolded states of bovine ubiquitin: protein stability and temperature-jump kinetic measurements of protein folding at low pH

Autor: Mark S. Searle, Michael W. George, Christopher S. Colley, Sam Griffiths-Jones, Ian P. Clark

Publikováno v: Chemical Communications. :1493-1494

Infrared spectroscopy has been used to characterise the folded and unfolded states of bovine ubiquitin (a small protein of 76 residues) under acidic conditions (pH ∼1); fast time-resolved measurements of protein unfolding, initiated by a laser-indu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::77564391e1ea1d74c808959ed0428236
https://doi.org/10.1039/b003768k

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Do interstrand hydrogen bonds contribute to β-hairpin peptide stability in solution? IR analysis of peptide folding in water

Autor: Mark S. Searle, Sam Griffiths-Jones, Michael W. George, Christopher S. Colley

Publikováno v: Chemical Communications. :593-594

The amide I carbonyl stretch in the IR spectrum, together with 1H NMR Hα chemical shifts, have been used to investigate the folding of a 16-residue β-hairpin peptide in water: while Hα shifts are consistent with a significant population of the fol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a4e81bd29a139ece055a70cca3672991
https://doi.org/10.1039/b000426j

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