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Bithiophene-Imide-Based Polymeric Semiconductors for Field-Effect Transistors: Synthesis, Structure−Property Correlations, Charge Carrier Polarity, and Device Stability


17 Feb 2017

Reliable Experimental

Synthesized 4,4’-didodecyl-2,2’-bithiophene (2b), and a similar compound 4,4’-dihexyl-2,2’-bithiophene (dhexbTH) following the procedure for the synthesis of 2a and 2b (given in supporting info.).

The yield for the synthesis of pure 2b was 50 %, which is...

(2)

Synthesis and Luminescence Properties of Colloidal YVO4:Eu Phosphors


05 Feb 2017

Synthesis useful for a laboratory course.

Solid state phosphors in the form of nanosized particles attract a lot of attention. This interest is of both fundamental and practical character. Ultrafine and homogeneous fluorescence particles can be used as biological labels and in the various lightning...

(1)

Particle size dependence of oxygen evolution reaction on nanocrystalline RuO2 and Ru0.8Co0.2O2−x


05 Feb 2017

A nice approach to synthesis of doped RuO2 nanopowders

Ruthenium oxide is one of the most active electrocatalytic material for oxygen evolution reaction (OER) and chlorine evolution reaction (CER). The attempts of improve its performance or to decrease the cost of the industrial electrodes resulted in many...

(1)

Synthesis, Characterization, and Catalase Activity of a Water-Soluble diMnIIIComplex of a Sulphonato-Substituted Schiff Base Ligand: An Efficient Catalyst for H2O2Disproportionation


09 Dec 2016

Good experimental, though extended rxn time beneficial

This paper describes synthesis, characterization, and catalase activity of a water-soluble diMn(III) complex of a sulphonato-substituted Schiff-base ligand. DiMn(III) complex is highly efficient to disproportionate hydrogen peroxide in basic aqueous solutions...

(1)

Synthesis, Characterization, and Catalase Activity of a Water-Soluble diMnIIIComplex of a Sulphonato-Substituted Schiff Base Ligand: An Efficient Catalyst for H2O2Disproportionation


23 Nov 2016

Review

This paper describes synthesis, characterization, and catalase activity of a water-soluble diMn(III) complex of a sulphonato-substituted Schiff-base ligand. DiMn(III) complex is highly efficient to disproportionate hydrogen peroxide in basic aqueous solutions...

(1)

The role of the visual image in analytical chemistry


19 Jan 2018

TEStasdf

This is short and simple

(1)

Ruggedness testing in analytical chemistry


19 Jan 2018

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(2)

An efficient method for the preparation of N,N-disubstituted 1,2-diamines


18 Feb 2017

Good synthesis with comments for improvement

The article presents a synthetic methodology to prepare chiral N,N-disubstituted, 1,2-diamines, which can be convenient precursors to tridentate ligands.

Particularly, I used the synthetic route using cyclohexane-1,2-diamine (both racemic and enatiopure)...

(5)

SYNTHESIS AND CHARACTERIZATION OF EFFICIENT TWO-PHOTON ABSORPTION CHROMOPHORES WITH INCREASED DIMENSIONALITY


18 Feb 2017

Sub grignard for n-BuLi for nmr clean product

Spirobifluorene: Synthesized spirobifluorene following the reported procedure (page 324-325) using  2-iodobiphenyl as starting material. It was difficult to isolate nmr-clean product and the yield was low, although they reported very high yield. Instead of...

(3)

Highly Chemoselective Reduction of Amides (Primary, Secondary, Tertiary) to Alcohols using SmI2/Amine/H2O under Mild Conditions


18 Feb 2017

Good but some limitations

 

Description of Study

Szostak and coworkers reported highly chemoselective reduction of amides ( primary, secondary, Tertiary) to alcohols using SmI2  /Amine /H2O under mild conditions.  They  reduced amide to alcohol by stirring amide (0.1mmol) with...

(5)

N,N‘-Ditosylhydrazine:  A Convenient Reagent for Facile Synthesis of Diazoacetates†


23 Feb 2017

Reproducible, but Yields Lower Than Described

Summary:

An efficient method for the synthesis of diazoacetates from the coresponding bromoacetates and N,N'-ditosylhydrazine has been described. In fact, diazoacetates can be prepared from various alcohols by acylation with bromoacetyl bromide, followed by...

(11)

Fluorescence Studies of Poly(p-phenyleneethynylene)s: The Effect of Anthracene Substitution


16 Feb 2017

Reproducible Synthesis

Swager et al reported the synthesis and fluorescence studies of poly(p-phenyleneethynylene)s. The experimental section, they made 4 different alkoxybenzenes using p-hydroquinone. I used this paper as a reference to synthesis a series of molecules:...

(2)

PtCl 2 -Catalyzed Rearrangement of Methylenecyclopropanes


17 Feb 2017

Good for Aldehydes, Modification for Ketone Substrates

This communication by Furstner and co-worker reported a novel rearrangement of methylenecyclopropanes 3 for the construction of variously substituted cyclobutenes and derivatives.

I am particularly interested in the preparation of cyclopropylidene bearing...

(4)

Preparation of thermally stable and soluble mesitylcopper(I) and its application in organic synthesis


18 Feb 2017

Synthesis of mesitylcopper

Synthesized mesitylcopper by following the procedure. 

(1) High quality anhydrous solvents (THF/dioxane/Toluene) and good argon or nitrogen protection for all the operations are key to get high yield and quality product, since the mesitylcoppor solution is...

(3)

Ir-Catalyzed Direct Borylation at the 4-Position of Pyrene


22 Feb 2017

Useful experimental

1. Synthesized compound 1 and another similar compound using the procedure described in this article.

2. Used 0.2 mmol Iridium instead of 0.1 mmol as reported. The reaction was monitored by TLC and after 48 hrs, all starting materials was consumed. The...

(3)

A novel Schiff-base as a Cu(II) ion fluorescent sensor in aqueous solution


18 Feb 2017

The role of DMSO in the system needs to be investigated

Summary:

This paper reports the synthesis of a Schiff base ligand (L) by reaction of 5,5’-methylene-bis-salicylaldehyde with amidol (2,4-diaminophenol). The applicability of this ligand as a new fluorescent Cu(II) sensor in aqueous medium was assessed. A...

(4)

Asymmetric synthesis of (−)-α-conhydrine


09 Dec 2016

Exp. Modification Necessary to Address Variable Yield

In one of my recent projects, I need find a method to convert diethyl malonate-d2 into 3-bromopropanol-d6. Following a literature reported procedure (Eur. J. Org. Chem. 2011, 3339–3346), diethyl malonate-d2 underwent lithium aluminum deuteride (LAD) reduction...

(1)

Tetraalkylammonium salts in heck-type reactions using an alkali metal hydrogen carbonate or an alkali metal acetate as the base


19 Dec 2016

Seminal paper for phase-transfer Heck-Mizoroki cross coupling

A pinacle reaction of the synthesis required the cross coupling off a two highly heteroatom functionalised fragments, the use of traditional Heck conditions, such as palladium (II) acetate, triphenyl phosphine and triethylamine afforded poor yields and...

(1)