Although metal assisted chemical etching (MacEtch) has emerged as a versatile micro-nanofabrication method for semiconductors, the chemical mechanism remains ambiguous in terms of both thermodynamics and kinetics. Here we demonstrate an innovative phenomenon, ...
Early transition metals (TMs), such as titanium, generally resist undergoing reductive elimination to form C–X bonds due to their weak electronegativity. By analyzing the mechanism of the titanium-catalyzed synthesis of pyrroles from alkynes and ...
Mechanistic insight into the semihydrogenation of 1-butyne and 2-butyne on Cu nanoparticles supported on partially dehydroxylated silica (Cu/SiO[2-700] ) was obtained using parahydrogen. Hydrogenation of 1-butyne over Cu/SiO[2-700] yielded 1-butene with ...
A general efficient regioselective cobalt catalyzed carbonylation of unactivated C(sp[3] )–H bonds of aliphatic amides was demonstrated using atmospheric (1–2 atm) carbon monoxide as a C1 source. This straightforward approach provides ...
Zincian georgeite, an amorphous copper–zinc hydroxycarbonate, has been prepared by co-precipitation using acetate salts and ammonium carbonate.Zincian georgeite, an amorphous copper–zinc hydroxycarbonate, has been prepared by co-precipitation ...
N-Allyltetramethylpiperidine is readily isomerized to the corresponding enamine by treatment with catalytic amounts of B(C[6] F[5] )[3] . It adds HB(C[6] F[5] )[2] at the nucleophilic enamine carbon atom to form a C/B Lewis adduct. This reacts with ...
Advances in the performances of many modern materials fundamentally depend upon the exploitation of new micro/nanostructures. Therefore, ingenious design of hierarchical structures through the mimicking of natural systems is of increasing importance. ...
In dye-sensitized solar cells (DSSCs), it is essential to use rational molecular design to obtain promising photosensitizers with well-matched energy levels and narrow optical band gaps. However, the “trade-off” effect between the photocurrent ...
Dynamic Covalent Libraries (DCLs) have been used to demonstrate coevolution behaviour on a molecular level using dynamic covalent molecules such as imines and hydrazones. Two systems are presented: the first system is based on a dialdehyde and two diamines ...
Diarylamines are an important class of widely utilized chemicals, and development of diverse procedures for their synthesis is of great importance. Herein, we have successfully developed novel versatile catalytic procedures for the synthesis of diarylamines ...
Water splitting performed in acidic media relies on the exceptional performance of iridium-based materials to catalyze the oxygen evolution reaction (OER). In the present work, we use in situ X-ray photoemission and absorption spectroscopy to resolve ...
The development of a triflimide-catalyzed annulation of benzylic alcohols with allylsilanes for the divergent synthesis of indane or tetralin structures from common precursors is reported.The development of a triflimide-catalyzed annulation of benzylic ...
The concentration of molecules can be changed by chemical reactions and thereby offer a continuous readout. Yet computer architecture is cast in textbooks in terms of binary valued, Boolean variables. To enable reactive chemical systems to compute we ...
The orthogonality between the Schiff base reaction and the boronic acid dehydration reaction is explored during the on-surface synthesis process. By activating the above two reactions in one-step and employing asymmetrical substituted monomers and the ...
Selective carbon–carbon and carbon–heteroatom bond cleavage was achieved in a one reaction system.Selective carbon–carbon and carbon–heteroatom bond cleavage was achieved in a one reaction system. With this strategy a ...
Nonadiabatic molecular dynamics simulations suggest an excited state electron proton transfer mechanism and explain the observation of mobile hydroxyl radicals.We present the first unconstrained nonadiabatic molecular dynamics (NAMD) simulations of photocatalytic ...
An AIEgen-based theranostic system is developed to amplify the antitumor efficacy of paclitaxel with a synergistic effect of “0 + 1 > 1”.Photosensitizers are generally treated as key components for photodynamic therapy. In contrast, ...
A novel Förster resonance energy transfer (FRET) fluorescence “off–on” system based on the highly specific, sensitive and effective C–C bond cleavage of certain dihydropyridine derivatives was reported for real-time ...
The formation of grain boundaries (GBs) in graphene films is both fundamentally interesting and practically important for many applications. A GB in graphene is known as a linear defect and is formed during the coalescence of two single crystalline graphene ...
A convenient method of introducing pentafluorobenzene (PFB) as a single end-group in polythiophene derivatives is reported via in situ quenching of the polymerization. We demonstrate that the PFB-group is a particularly useful end-group due to its ability ...
The synthesis of materials in high-pressure experiments has recently attracted increasing attention, especially since the discovery of record breaking superconducting temperatures in the sulfur–hydrogen and other hydrogen-rich systems. Commonly, ...
The soluble 115 nuclear silver cluster [Ag[115] S[34] (SCH[2] C[6] H[4] [t] Bu)[47] (dpph)[6] ] was synthesized and fully characterized in solution and in the solid state.With the aim to synthesize soluble cluster molecules, the silver salt of (4-(tert-butyl)phenyl)methanethiol ...
The design of targeted platinum() prodrugs is a very promising approach to enhance the low selectivity of platinum() drugs towards cancerous tissue in order to reduce the impact on healthy tissue and, consequently, the often severe side-effects. Herein, ...
Duplexed aptamers (DAs) are engineered by hybridizing an aptamer-complementary element (ACE, e.g. a DNA oligonucleotide) to an aptamer; to date, ACEs have been presumed to sequester the aptamer into a non-binding duplex state, in line with a conformational ...
NMR sensitivity enhanced through SABRE hyperpolarisation and pH manipulation enables the use of vitamin B3 as a pH probe.In this work we describe how the signal enhancements obtained through the SABRE process in methanol-d [4] solution are significantly ...