Conservation of El-Sayed’s Rules in the Photolysis of Phenyl Azide: Two Independent Decomposition Doorways for Alternate Direct Formation of Triplet and Singlet Phenylnitrene

2019 ◽  
Vol 123 (42) ◽  
pp. 9053-9060 ◽  
Author(s):  
Juan Soto ◽  
Juan C. Otero
Keyword(s):  
Phenyl Azide ◽  
Direct Formation

Site-Specific Protein Covalent Attachment to Nanotubes and Its Electronic Impact on Single Molecule Function

2019 ◽  
Author(s):  
Adam Beachey ◽  
Harley Worthy ◽  
William David Jamieson ◽  
Suzanne Thomas ◽  
Benjamin Bowen ◽  
...  
Keyword(s):  
Single Molecule ◽  
Fluorescent Protein ◽  
Functional Integration ◽  
Attachment Site ◽  
Covalent Attachment ◽  
Great Promise ◽  
Functional Coupling ◽  
Phenyl Azide ◽  
Electronic Impact ◽  
Protein Attachment

<p>Functional integration of proteins with carbon-based nanomaterials such as nanotubes holds great promise in emerging electronic and optoelectronic applications. Control over protein attachment poses a major challenge for consistent and useful device fabrication, especially when utilizing single/few molecule properties. Here, we exploit genetically encoded phenyl azide photochemistry to define the direct covalent attachment of three different proteins, including the fluorescent protein GFP, to carbon nanotube side walls. Single molecule fluorescence revealed that on attachment to SWCNTs GFP’s fluorescence changed in terms of intensity and improved resistance to photobleaching; essentially GFP is fluorescent for much longer on attachment. The site of attachment proved important in terms of electronic impact on GFP function, with the attachment site furthest from the functional center having the larger effect on fluorescence. Our approach provides a versatile and general method for generating intimate protein-CNT hybrid bioconjugates. It can be potentially applied easily to any protein of choice; attachment position and thus interface characteristics with the CNT can easily be changed by simply placing the phenyl azide chemistry at different residues by gene mutagenesis. Thus, our approach will allow consistent construction and modulate functional coupling through changing the protein attachment position.</p>

Semiempirical description of the C6H5N reactive intermediate in phenyl azide photolysis

1976 ◽  
Vol 43 (2) ◽  
pp. 137-144 ◽  
Author(s):  
Donald D. Shillady ◽  
Carl Trindle
Keyword(s):  
Reactive Intermediate ◽  
Phenyl Azide

Direct formation of 3,3,6,6-Tetraaryl-1,2-dioxans from 1,1-Diarylethylenes and oxygen, catalysed by antimony(V) chloride

1978 ◽  
Vol 31 (8) ◽  
pp. 1737 ◽  
Author(s):  
RK Haynes ◽  
MKS Probert ◽  
ID Wilmot
Keyword(s):  
Direct Formation ◽  
High Yields ◽  
Tungsten Lamp

1,1-Diphenylethylene, 1,1-di-p-tolylethylene, 1,1-di-p-anisylethylene and 1,1-di(p-t-butylphenyl)-ethylene are converted in high yields (80- 90%) into the corresponding 3,3,6,6-tetraaryl-1,2-dioxans in the presence of oxygen and catalytic amounts of antimony(v) chloride in dichloromethane at -40° to -78° under irradiation from a tungsten lamp.

Direct formation of acylazo- and aroylazo-rhenium(III) complexes from rhenium(I) dinitrogen complexes

1973 ◽  
Vol 57 (2) ◽  
pp. C67-C68 ◽  
Author(s):  
Joseph Chatt ◽  
Graham A. Heath ◽  
Norman E. Hooper ◽  
G.Jeffery Leigh
Keyword(s):  
Dinitrogen Complexes ◽  
Direct Formation

Nucleation and amorphization of radiation-produced phases in a modified austenitic stainless steel during Ni-ion irradiation

1988 ◽  
Vol 3 (5) ◽  
pp. 840-844 ◽  
Author(s):  
E. H. Lee ◽  
E. A. Kenik
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Ion Irradiation ◽  
Amorphous State ◽  
Dislocation Loops ◽  
Nickel Ion ◽  
Carbide Phases ◽  
Direct Formation ◽  
Radiation Induced ◽  
Lower Temperature

The nucleation and amorphization of radiation-induced (G) and radiation-enhanced (η) phases in a silicon- and titanium-modified austenitic stainless steel have been studied under nickel-ion irradiation. These silicon- and nickel-enriched phases form under high-temperature (950 K) irradiation as the result of radiation-induced segregation to radiation-produced interstitial dislocation loops. Availability of carbon promotes the formation of η phase relative to G phase. Under lower temperature (450 K) irradiation, G and η phases are amorphized without significant change in composition of metallic elements. Two carbide phases (MC, M23C6) remain crystalline for the same irradiation conditions. The amorphization of the silicides may result from (1) radiation damage increasing their free energy above that of the amorphous state or (2) direct formation of the amorphous phase in the damage cascade.

scholarly journals Direct Formation of Quasimolecular1sσVacancies in Uranium-Uranium Collisions

1976 ◽  
Vol 37 (16) ◽  
pp. 1046-1049 ◽  
Author(s):  
Wilfried Betz ◽  
Gerhard Soff ◽  
Berndt Müller ◽  
Walter Greiner
Keyword(s):  
Direct Formation

Direct formation of anatase TiO2nanoparticles on carbon nanotubes by atomic layer deposition and their photocatalytic properties

2016 ◽  
Vol 27 (40) ◽  
pp. 405702 ◽  
Author(s):  
Sheng-Hsin Huang ◽  
Shih-Yun Liao ◽  
Chih-Chieh Wang ◽  
Chi-Chung Kei ◽  
Jon-Yiew Gan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Atomic Layer Deposition ◽  
Atomic Layer ◽  
Photocatalytic Properties ◽  
Layer Deposition ◽  
Direct Formation
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