Role of surfactant and micelle promoted mild, green, highly efficient and sustainable approach for construction of novel fused pyrimidines at room temperature in water

RSC Advances ◽  
2016 ◽  
Vol 6 (72) ◽  
pp. 67651-67661 ◽  
Author(s):  
Pramod K. Sahu
Keyword(s):  
Room Temperature ◽  
Green Protocol ◽  
Highly Efficient ◽  
First Time

A facile, efficient and green protocol for surfactant catalyzed synthesis of fused pyrimidines in water at room temperature was developed for the first time.

Immobilizing AgPd alloy on Vulcan XC-72 carbon: a novel catalyst for highly efficient hydrogen generation from formaldehyde aqueous solution

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 105638-105643 ◽  
Author(s):  
Shutao Gao ◽  
Tao Feng ◽  
Qiuhua Wu ◽  
Cheng Feng ◽  
Ningzhao Shang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Room Temperature ◽  
Hydrogen Generation ◽  
Bimetallic Catalyst ◽  
Highly Efficient ◽  
Novel Catalyst ◽  
First Time

A novel bimetallic catalyst, AgPd nanoalloy supported on Vulcan XC-72 carbon (AgPd@C-72), has been successfully fabricated and used for catalyzing H2 generation from formaldehyde aqueous solution at room temperature for the first time.

Effects on the amorphous Ga2O3 film surfaces by sub-IB-metal-nano-layers

MRS Advances ◽  
2019 ◽  
Vol 4 (5-6) ◽  
pp. 285-292
Author(s):  
L. I. Juárez-Amador ◽  
M. Galván-Arellano ◽  
Y. M. Hernández-Rodríguez ◽  
J. A. Andraca-Adame ◽  
G. Romero-Paredes ◽  
...  
Keyword(s):  
Room Temperature ◽  
Rf Sputtering ◽  
Sem Analysis ◽  
X Ray Diffraction ◽  
Amorphous Films ◽  
X Ray ◽  
Plasmon Frequency ◽  
First Time ◽  
Amorphous Character

AbstractThis work reports by the first time a method to control the geometry of Ga2O3 films nanocrystallites at 350 °C. The formation of controlled shaped nano-crystallites of γ-Ga2O3 from amorphous Ga2O3 films grown by RF-Sputtering at room temperature driven by nano-layers of group IB metals (Cu, Ag or Au) is studied. The reported results can be explained by the role of subsurface metal nano-layers and the non-equilibrium nature of the sputtering processes. To study the effects on the surface structure and their optical properties arrays of amorphous-Ga2O3/IB-metal/amorphous-Ga2O3 were annealed in dry N2 atmosphere at 350 °C by 50, 100 and 150 min. The experimental results can be explained by the evolution of the amorphous character of the films amorphous films towards the nanocrystalline γ-Ga2O3 phase driven by the metal nano-layer seed nature. As the annealing time was increased the transition from amorphous-Ga2O3 to the nanocrystalline γ-Ga2O3 phase was detected by X-ray diffraction analysis. The transition to the nanocrystalline γ-Ga2O3 is demonstrated by the formation of octahedral, triangle and ball shape nanocrystallites with sizes of ∼5 to 50 nm according to FE-SEM analysis. The influence of the metal nano-layer is clearly seen by the shift of the plasmon frequency resonance produced by the Ga2O3/IB-metal/Ga2O3 arrays in the region from 400 to 600 nm caused by the modification of the interface Ga2O3/IB-metal produced by the applied annealing stages.

Field-based evidence of rose seed-infesting wasps Megastigmus aculeatus (Swederus) surviving bird gut passage

2009 ◽  
Vol 59 (2) ◽  
pp. 189-199 ◽  
Author(s):  
Ángel Hernández
Keyword(s):  
Room Temperature ◽  
Adult Emergence ◽  
Late Winter ◽  
Early Winter ◽  
Ecological Significance ◽  
Frugivorous Birds ◽  
Flight Capacity ◽  
First Time ◽  
Megastigmus Aculeatus

AbstractThe survival of fruit-infesting insects after bird ingestion and gut processing has been verified in very few cases, and little is known about its ecological significance. It has already been reported that the torymid wasp Megastigmus aculeatus (Swederus) survives passage through the digestive tract of frugivorous birds in the larval stage in rose seeds, but now, for the first time this has been demonstrated in hips consumed by birds in a natural environment, after collecting droppings in the field during winter and verifying wasp survival and emergence almost two years later. The rate of rose seed infestation was c.5% and the survival rate c.88%. The adult emergence rate was noticeably lower in droppings collected in early winter (54.5%) than late winter (87.5%), probably because the seeds collected in early winter were kept at room temperature (approximately 22° C) before those collected in late winter and the minimum time of exposure to low temperatures needed by the larvae to complete the diapause and continue morphogenesis had not elapsed. The results support the hypothesis that the role of frugivorous birds, particularly Turdus blackbirds and thrushes in Europe, could facilitate the dispersion of this torymid species as adult wasps have very limited flight capacity.

Polymeric room-temperature molten salt as a multifunctional additive toward highly efficient and stable inverted planar perovskite solar cells

2020 ◽  
Vol 13 (12) ◽  
pp. 5068-5079
Author(s):  
Shuangjie Wang ◽  
Bowen Yang ◽  
Jian Han ◽  
Ziwei He ◽  
Tongtong Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Molten Salt ◽  
Room Temperature ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Multifunctional Additive ◽  
Highly Efficient ◽  
First Time ◽  
Excellent Stability

We for the first time report the application of a polymeric room-temperature molten salt in high efficiency and excellent stability inverted perovskite solar cells.

scholarly journals Carbon nanohorn-based electrolyte for dye-sensitized solar cells

2015 ◽  
Vol 8 (1) ◽  
pp. 241-246 ◽  
Author(s):  
Fabian Lodermeyer ◽  
Rubén D. Costa ◽  
Rubén Casillas ◽  
Florian T. U. Kohler ◽  
Peter Wasserscheid ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Room Temperature ◽  
Dye Sensitized Solar Cells ◽  
Carbon Nanohorns ◽  
Dye Sensitized ◽  
Highly Efficient ◽  
Solid State Electrolytes ◽  
First Time ◽  
Sensitized Solar Cells

For the first time, carbon nanohorns were implemented into solid-state and quasi-solid-state electrolytes for highly efficient DSSCs yielding efficiencies of up to 7.84% at room temperature.

(DHQD)2PHAL ligand-accelerated Cu-catalyzed azide–alkyne cycloaddition reactions in water at room temperature

RSC Advances ◽  
2014 ◽  
Vol 4 (110) ◽  
pp. 64388-64392 ◽  
Author(s):  
Abdul Aziz Ali ◽  
Mitali Chetia ◽  
Prakash J. Saikia ◽  
Diganta Sarma
Keyword(s):  
Room Temperature ◽  
Environmentally Friendly ◽  
Catalyst System ◽  
Cycloaddition Reactions ◽  
Green Protocol ◽  
Highly Efficient

In this work, a novel green protocol has been developed for CuAAC reactions involving (DHQD)2PHAL and CuI as catalyst system. The method is very quick, highly efficient and environmentally friendly for the synthesis of 1,2,3-triazoles.

Copper-Catalyzed Highly Efficient Esterification of Aldehydes with N-Hydroxyphthalimide via Cross-Dehydrogenative Coupling in Water at Room Temperature

Synlett ◽  
2017 ◽  
Vol 28 (11) ◽  
pp. 1321-1326 ◽  
Author(s):  
Can Jin ◽  
Weike Su ◽  
Zhicheng Guo ◽  
Xinpeng Jiang ◽  
Jiadi Zhou ◽  
...  
Keyword(s):  
Reaction Time ◽  
Efficient Method ◽  
Room Temperature ◽  
Coupling Reaction ◽  
Short Reaction Time ◽  
Mild Conditions ◽  
Highly Efficient ◽  
Dehydrogenative Coupling ◽  
First Time

A copper-catalyzed cross-dehydrogenative coupling reaction between N-hydroxyphthalimide and aldehydes using PhI(OAc)2 as an oxidant is described. It is reported for the first time to synthesize NHPI esters in water, providing the corresponding NHPI esters in moderate to good yields. This facile and efficient method is eco-friendly and possesses the advantages of mild conditions, short reaction time, and broad substrate scope.

A Mild Highly Efficient and Green Protocol for Preparation of N-alk-2′-Enoyl Cyclic Imides Using Basic Ionic Liquid [bmIm]OH as Base and Reaction Medium

2008 ◽  
Vol 2008 (10) ◽  
pp. 559-561 ◽  
Author(s):  
Yongjiang Wang ◽  
Jianwei Mao ◽  
Wen Pei
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Reaction Medium ◽  
Green Protocol ◽  
Highly Efficient ◽  
Basic Ionic Liquid ◽  
Cyclic Imides

An efficient and green protocol for the preparation of N-alk-2′-enoyl cyclic imides at room temperature was developed using a basic ionic liquid, 1-methyl-3-butylimidazolium hydroxide, [bmIm]OH, as a base and a reaction medium.

scholarly journals Fe3O4@Sap/Cu(ii): an efficient magnetically recoverable green nanocatalyst for the preparation of acridine and quinazoline derivatives in aqueous media at room temperature

RSC Advances ◽  
2021 ◽  
Vol 11 (26) ◽  
pp. 15989-16003
Author(s):  
Milad Kazemnejadi ◽  
Mohammad Ali Nasseri ◽  
Safoora Sheikh ◽  
Zinat Rezazadeh ◽  
Seyyedeh Ameneh Alavi Gol
Keyword(s):  
Heterogeneous Catalyst ◽  
Room Temperature ◽  
Aqueous Media ◽  
Reaction Conditions ◽  
Green Protocol ◽  
Highly Efficient ◽  
Quinazoline Derivatives ◽  
Efficient Heterogeneous Catalyst

A highly efficient, robust, and green protocol has been developed for the synthesis of acridine and quinazoline derivatives in water under mild reaction conditions using a Fe3O4@Sap/Cu(ii) nanocomposite as an efficient heterogeneous catalyst.

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