ChemPlusChem

Just passing through: We synthesized S-galactosyl–oligo(Arg) conjugates (see scheme) as new inducers for protein biosynthesis in bacteria. In vivo expression of green fluorescence protein (GFP) was induced by S-Gal–(Arg)_n at the T5 promoter in E. coli. The level of GFP expression was directly related to the number of arginine moieties in each peptide, which we propose is responsible for how well each peptide passes through the E. coli membrane.

The title composite was prepared and self-assembled on carbon nanotubes (CNTs). Even after cleaning with UV/Ozone and electrochemical methods, the residual polyallylamine strongly influences the electronic structure of Pt. The resultant Pt-NC/CNT nanohybrid shows superior electrochemical activity and stability towards the oxygen reduction reaction in H₂SO₄ solutions compared with commercial Pt/C catalyst.

Pollutant breakdown: As depicted, the photogenerated electrons of TiO₂ transfer to the multiwalled carbon nanotube (MWCNT) and are captured by adsorbed O₂. Phosphate functionalization of MWCNTs promotes O₂ adsorption to improve photogenerated charge separation of the resulting MWCNT–TiO₂ composite.

All things being equal: The electrophilic aromatic bromination of 1,2:3,4:5,6-tris(biphenylylene)borazine yields the tribromo derivative that has only small bond-length alternation (BLA) according to X-ray crystallography and state-of-the art computations (see scheme). A re-investigation of the structure of the parent 1,2:3,4:5,6-tris(biphenylylene)borazine compound by experiment and theory reveals positional disorder of the borazine core.

No two ways about it: Two photo- and thermoisomeric compounds of [(H₃ATSA)]⋅2 H₂O and [Cd₂(H₂ATSA)₄]⋅13 H₂O have been prepared and their optical properties investigated as well as simulated by DFT and TDDFT calculations (see figure). The multiple chromic properties of these compounds may be exploited to create new photoactive devices.