@article { ISI:000377604100021, title = {Facile green synthesis of BCN nanosheets as high-performance electrode material for electrochemical energy storage}, journal = {Chemistry-A European Journal}, volume = {22}, number = {21}, year = {2016}, month = {MAY}, pages = {7134-7140}, publisher = {WILEY-V C H VERLAG GMBH}, address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY}, abstract = {

Two-dimensional hexagonal boron carbon nitride (BCN) nanosheets (NSs) were synthesized by new approach in which a mixture of glucose and an adduct of boric acid (H3BO3) and urea (NH2CONH2) is heated at 900 degrees C. The method is green, scalable and gives a high yield of BCN NSs with average size of about 1 mm and thickness of about 13 nm. Structural characterization of the as-synthesized material was carried out by several techniques, and its energy-storage properties were evaluated electrochemically. The material showed excellent capacitive behaviour with a specific capacitance as high as 244 F g(-1) at a current density of 1 A g(-1). The material retains up to 96\% of its initial capacity after 3000 cycles at a current density of 5 A g(-1).

}, keywords = {boron, Doping, Electrochemistry, Nanoparticles, nitrides}, issn = {0947-6539}, doi = {10.1002/chem.201505225}, author = {Karbhal, Indrapal and Devarapalli, Rami Reddy and Debgupta, Joyashish and Pillai, Vijayamohanan K. and Ajayan, Pulickel M. and Shelke, Manjusha V.} } @article {46064, title = {Boron-conjugated pyrenes as fluorescence-based molecular probes and security markers}, journal = {ChemPlusChem}, year = {2019}, month = {JUL}, type = {Article}, abstract = {

Boron-embedded aromatic hydrocarbons are a class of molecules known for their distinct electronic and/or optoelectronic properties and are thus suitable for many potential applications. Among those, boronic ester and acid containing molecules have been widely used for sensing and molecular recognition applications, respectively. We compared the sensing and molecular recognition properties of two boron-containing pyrene derivatives for fluoride and glucose sensing applications. The presence of four boronate ester groups enabled fluoride ion sensing at the mu M level. The boronic acid derivative is very selective towards glucose compared to other saccharides. Furthermore, we used the mechano-responsive fluorescence changes and self-assembly of these derivatives, respectively, for fluorescence-based inkless and ink (water)-based writing in invisible security labeling applications.

}, keywords = {boron, carbohydrates, mechanoluminescence, pyrene, sensors}, issn = {2192-6506}, doi = {10.1002/cplu.201900280, Early Access Date = JULY, Early Access Year = 2019}, author = {Wakchaure, Vivek Chandrakant and Das, Tamal and Babu, Sukumaran Santhosh} } @article {48971, title = {Access to NHC-Boryl mono- and bis-selenide and utility as mild selenium transfer reagent including to the C-F bond}, journal = {Chemistry- a european journal}, volume = {30}, year = {2024}, month = {JAN }, type = {Article}, abstract = {

Reactions of 5-SIDipp \& sdot; BH3 (5-SIDipp=1,3-bis(2,6-diisopropylphenyl)-imidazolin-2-ylidene) (1) with diphenyldiselenide provide access to 5-SIDipp-boryl mono- (5-SIDipp \& sdot; BH2SePh) (2) and bis-selenide (5-SIDipp \& sdot; BH(SePh)2) (3). The facile cleavage of the B-Se bond makes 2 a neutral source of selenium nucleophiles in substitutions reactions with benzyl bromides, and provide access to the corresponding selenoethers. The direct transformations of one of the C(sp2)-F bonds of C5F5N and C6F5CF3 to C-Se bonds have also been achieved by the use of 2 without employing transition-metal catalysts. While it was previously established that C6F6 could undergo complete defluoroselenation under harsh conditions, we successfully achieved partial defluorination of C6F6 by employing 2 as a mild selenide transfer reagent. During the formation of C-Se bonds through the cleavage of C-F bonds, the potential by-product NHC \& sdot; BH2F undergoes ring expansion of the NHC, leading to the formation of the six-membered diaazafluoroborinane (7). Access to NHC \& sdot; boryl mono- and bis-selenides from NHC \& sdot; BH3 has been achieved. The boryl mono selenide has been demonstrated to function as a selenium transfer reagent, enabling the synthesis of selenoethers from benzyl bromide. Additionally, it can also facilitate the conversion of the challenging aromatic C-F bond to a C-Se bond, resulting in concomitant ring expansion of NHC \& sdot; haloborane.image

}, keywords = {boron, C-F Bond Activation, N-Heterocyclic carbene, Ring expansion, Selenium}, issn = {0947-6539}, doi = {10.1002/chem.202302984}, author = {Kundu, Gargi and Amrutha, P. R. and Tothadi, Srinu and Sen, Sakya S.} }