Xiao, Zuo published the artcilePushing Fullerene Absorption into the Near-IR Region by Conjugately Fusing Oligothiophenes, HPLC of Formula: 52431-30-8, the publication is Angewandte Chemie, International Edition (2012), 51(36), 9038-9041, S9038/1-9038/27, database is CAplus and MEDLINE.
By fusing the π-electron systems of oligothiophene and fullerene through the open-cage strategy, the visible absorbance of fullerenes was significantly enhanced and pushed their absorption into NIR region. This optical property improvement concerns the following factors: (1) symmetry breaking of the fullerene by open-cage reactions allows more low-energy transitions to take place; (2) addnl. absorption is taken by external chromophore; and (3) strong cross-talking between the donor and acceptor in the conjugated system leads to ICT absorbance in the NIR region. Therefore, the open-cage strategy provides a promising approach for creating new materials with advanced optical properties. Future work is focused on developing novel NIR-absorbing fullerene materials and applying them in organic solar cells and nonlinear optics.
Angewandte Chemie, International Edition published new progress about 52431-30-8. 52431-30-8 belongs to bromides-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 2,5-Dibromo-3,4-dinitrothiophene, and the molecular formula is C6H12N2O, HPLC of Formula: 52431-30-8.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary