Double Molecular Antenna Pyrene – Bridge - Fullerene C60

Abstract

C 60 pyrene anthrylvinylene triads were synthesized with good yields by an O-alkylation reaction of pyrene anthracene chloride derivatives and functionalized fullerene C 60 . The presence of lateral butoxy chains imparts good solubility. The NMR data indicate the formation of only the trans isomers. After C 60 cyclopropanation, the UV-Vis spectra show the pyrene electronic transition with an absorption band extending from 400 to 800 nm due to the combination of the electronic transition of the antrylvinylene moiety and the C 60 band, regardless the extension of the anthrylvinylene moiety. However, the emission is almost mirror-like with respect to the absorption bands of pyrene, suggesting that the HOMO and LUMO are more localized on this substituent. All the obtained compounds were characterized by 1 H and 13 C NMR, FTIR, UV-Vis, fluorescence spectroscopy, MALDI-TOF, Electrospray or FAB+ mass spectrometry, and elemental analysis.

Tuning the Intermolecular Electron Transfer of Low-Dimensional and Metal-Free BCN/C60 Electrocatalysts via Interfacial Defects for Efficient Hydrogen and Oxygen Electrochemistry

“…The UV–vis spectra of F and 10% F/BCN were also obtained, and the results are presented in Figure S5. The UV–vis spectrum of F displayed a characteristic band at around 328 nm, which is usually results from the π–π electronic transitions . The red-shift in the band located at around 328 nm is associated with the interactions between F and the other molecules, and therefore this band is a key indicator for the interactions of F with aromatic rings .…”

“…The UV− vis spectrum of F displayed a characteristic band at around 328 nm, which is usually results from the π−π electronic transitions. 34 The red-shift in the band located at around 328 nm is associated with the interactions between F and the other molecules, and therefore this band is a key indicator for the interactions of F with aromatic rings. 35 The π−π stacking of F and BCN NSs likely delocalizes the π-electron system and thereby reduces the required energy for the electronic transitions.…”

Enhancing thermoelectric properties of organic composites through hierarchical nanostructures

“…As shown in Figure 5 , the spectrum of the C 60 shows two characteristic peaks at 280 and 328 nm. The peak at 328 nm stems from the π-π electronic transitions 45 . The red shift of the peak at 328 nm is correlated with the interactions between C 60 and other molecules, and thus this peak is a crucial indicator for the interaction of fullerene and aromatic rings 46 .…”

Luminescence of Eu3+ ions in hybrid polymer‐inorganic composites based on poly(methyl methacrylate) and zirconia nanoparticles

“…A wide class of optical materials based on bioinert polymer matrix modified by quantum dots are accepted for use in medicine today . The field of application of these materials is wide, and includes laser methods of treatment and prevention of chronic and infectious diseases, and also methods of diagnosis of oncological and hereditary genetic disorders .…”