pH Dependent Self-Assembly of Single-Pyrene-Armed Calix[4]arene: Modulation and Complexation with p-Sulfonatocalix[6]arene was written by Kalyani, Vrashali S.;Gawhale, Sharadchandra T.;Rathod, Nilesh V.;Singh, Prabhat K.;Malkhede, Dipalee D.. And the article was included in ChemistrySelect in 2019.Recommanded Product: 2-Bromo-1-(pyren-1-yl)ethanone The following contents are mentioned in the article:
The photophys. behavior of a single pyrene substituted calix[4]arene derivative (MPCX4) has been investigated, as a function of pH, using steady state fluorescence and time-resolved emission spectroscopic techniques. An interesting dimer emission band has been observed exclusively in the alk. solution (pH > 8) which has been attributed to the hydrophobic and stacking interaction between the pyrene moieties of the adjacent MPCX4 mol. The self-assembled MPCX4 is disrupted by the introduction of another calixarene based host, p-sulfonatocalix[6]arene (SCX6), which eventually leads to the 1:1 complex formation between MPCX4 and SCX6, which is further characterised by 1H NMR, FT-IR and HR-MS techniques. This complexation between MPCX4 and SCX6 also leads to the modulation of the prototropic equilibrium of MPCX4. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Recommanded Product: 2-Bromo-1-(pyren-1-yl)ethanone).
2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.Recommanded Product: 2-Bromo-1-(pyren-1-yl)ethanone
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary