HPLC of Formula: C12H8Br2. Authors Lovell, TC; Colwell, CE; Zakharov, LN; Jasti, R in ROYAL SOC CHEMISTRY published article about in [Lovell, Terri C.; Colwell, Curtis E.; Jasti, Ramesh] Univ Oregon, Inst Mat Sci, Dept Chem & Biochem, Eugene, OR 97403 USA; [Zakharov, Lev N.] Univ Oregon, CAMCOR Ctr Adv Mat Characterizat Oregon, Eugene, OR 97403 USA in 2019, Cited 38. The Name is 4,4′-Dibromobiphenyl. Through research, I have a further understanding and discovery of 92-86-4
[n]Cycloparaphenylenes, or carbon nanohoops, are unique conjugated macrocycles with radially oriented pi-systems similar to those in carbon nanotubes. The centrosymmetric nature and conformational rigidity of these molecules lead to unusual size-dependent photophysical characteristics. To investigate these effects further and expand the family of possible structures, a new class of related carbon nanohoops with broken symmetry is disclosed. In these structures, referred to as meta[n]cycloparaphenylenes, a single carbon-carbon bond is shifted by one position in order to break the centrosymmetric nature of the parent [n]cycloparaphenylenes. Advantageously, the symmetry breaking leads to bright emission in the smaller nanohoops, which are typically non-fluorescent due to optical selection rules. Moreover, this simple structural manipulation retains one of the most unique features of the nanohoop structures-size dependent emissive properties with relatively large extinction coefficients and quantum yields. Inspired by earlier theoretical work by Tretiak and co-workers, this joint synthetic, photophysical, and theoretical study provides further design principles to manipulate the optical properties of this growing class of molecules with radially oriented pi-systems.
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Reference:
Benzoxazole – Wikipedia,
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