Singlet harvesting with brightly emitting Cu(I) and metal-free organic compounds

2012 ◽  
Author(s):  
Hartmut Yersin ◽  
Rafal Czerwieniec ◽  
Alexander Hupfer
Keyword(s):  
Organic Compounds ◽  
Metal Free ◽  
Singlet Harvesting

Transition metal-free synthesis of alkyl pinacol boronates

2020 ◽  
Vol 18 (44) ◽  
pp. 8939-8974 ◽  
Author(s):  
Kanak Kanti Das ◽  
Swagata Paul ◽  
Santanu Panda
Keyword(s):  
Transition Metal ◽  
Organic Compounds ◽  
Metal Free

This review systematically outlined the research in the area of transition metal free synthesis of alkyl pinacol boronates, which are versatile and important scaffolds to construct diverse organic compounds.

New possibility of hydroxyapatites as noble-metal-free catalysts towards complete decomposition of volatile organic compounds

2020 ◽  
Vol 10 (16) ◽  
pp. 5453-5459
Author(s):  
Yunzi Xin ◽  
Yuri Ando ◽  
Sohei Nakagawa ◽  
Harumitsu Nishikawa ◽  
Takashi Shirai
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Noble Metal ◽  
Metal Free ◽  
Complete Decomposition ◽  
Catalysis Mechanism ◽  
Volatile Organic

Initially established catalysis mechanism for the decomposition of VOCs on noble-metal-free hydroxyapatite catalysts.

Conformation controlled turn on–turn off phosphorescence in a metal-free biluminophore: thriving the paradox that exists for organic compounds

2016 ◽  
Vol 18 (40) ◽  
pp. 27910-27920 ◽  
Author(s):  
Ritika Joshi ◽  
Oinam Romesh Meitei ◽  
Manojkumar Jadhao ◽  
Himank Kumar ◽  
Sujit Kumar Ghosh
Keyword(s):  
Organic Compounds ◽  
Metal Free ◽  
Turn On ◽  
Intense Emission ◽  
Conformational Regulation ◽  
Fluorescence And Phosphorescence

The dual state intense emission, both fluorescence and phosphorescence, of CBIQD by way of conformational regulation–deregulation.

Transition Metal-free Photoorganocatalytic Fluoroalkylation Reactions of Organic Compounds

2016 ◽  
Vol 20 (27) ◽  
pp. 2838-2847 ◽  
Author(s):  
Sebastián Barata-Vallejo ◽  
Damian E. Yerien ◽  
Beatriz Lantano ◽  
Al Postigo
Keyword(s):  
Transition Metal ◽  
Organic Compounds ◽  
Metal Free

Solvent-free Preparation of Electrochemical Capacitor Electrodes Using Metal-free Redox Organic Compounds

2016 ◽  
Vol 5 (1) ◽  
pp. 556-562 ◽  
Author(s):  
Hiroyuki Itoi ◽  
Yuka Yasue ◽  
Keita Suda ◽  
Seiya Katoh ◽  
Hideyuki Hasegawa ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Electrochemical Capacitor ◽  
Solvent Free ◽  
Metal Free

The Tempo and mode(S) of Prebiotic Evolution

1997 ◽  
Vol 161 ◽  
pp. 419-429 ◽  
Author(s):  
Antonio Lazcano
Keyword(s):  
Origin Of Life ◽  
Organic Compounds ◽  
Biological Evolution ◽  
Current Evidence ◽  
Early Diversification ◽  
Time Period ◽  
The Galaxy ◽  
History Of ◽  
Widespread Phenomenon ◽  
The Origin Of Life

AbstractDifferent current ideas on the origin of life are critically examined. Comparison of the now fashionable FeS/H2S pyrite-based autotrophic theory of the origin of life with the heterotrophic viewpoint suggest that the later is still the most fertile explanation for the emergence of life. However, the theory of chemical evolution and heterotrophic origins of life requires major updating, which should include the abandonment of the idea that the appearance of life was a slow process involving billions of years. Stability of organic compounds and the genetics of bacteria suggest that the origin and early diversification of life took place in a time period of the order of 10 million years. Current evidence suggest that the abiotic synthesis of organic compounds may be a widespread phenomenon in the Galaxy and may have a deterministic nature. However, the history of the biosphere does not exhibits any obvious trend towards greater complexity or «higher» forms of life. Therefore, the role of contingency in biological evolution should not be understimated in the discussions of the possibilities of life in the Universe.

The Shadow Widths of Very Small Particles are Formed Independently of the Metal Cap Build Up on the Particle

1981 ◽  
Vol 39 ◽  
pp. 568-569
Author(s):  
George C. Ruben
Keyword(s):  
Gold Particle ◽  
Film Surface ◽  
Small Particles ◽  
Geometric Process ◽  
Metal Free ◽  
Shadow Area

The formation of shadows behind small particles has been thought to be a geometric process (GP) where the metal cap build up on the particle creates a shadow width the same size as or larger than the particle. This GP cannot explain why gold particle shadow widths are generally larger than the gold particle and may have no appreciable metal cap build up (fig. 1). Ruben and Telford have suggested that particle shadow widths are formed by the width dependent deflection of shadow metal (SM) lateral to and infront of the particle. The trajectory of the deflected SM is determined by the incoming shadow angle (45°). Since there can be up to 1.4 times (at 45°) more SM directly striking the particle than the film surface, a ridge of metal nuclei lateral to and infront of the particle can be formed. This ridge in turn can prevent some SM from directly landing in the metal free shadow area. However, the SM that does land in the shadow area (not blocked by the particle or its ridge) does not stick and apparently surface migrates into the SM film behind the particle.

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