880141-21-9Relevant academic research and scientific papers
A donor-acceptor dyad with a highly lewis acidic boryl group
Sundararaman, Anand,Varughese, Resmi,Li, Haiyan,Zakharov, Lev N.,Rheingold, Arnold L.,Jaekle, Frieder
, p. 6126 - 6131 (2008/10/09)
A donor - π - acceptor dyad with a highly electron-deficient B(C 6F5)2 group as the acceptor has been prepared. 5-Diphenylamino-5′-bis(pentafluorophenyl)boryl-2,2′-bithiophene (3) was fully characterized by multinuclear NMR spectroscopy, mass spectrometry, and X-ray crystallography. The solid-state structure of 3 shows the presence of multiple π-stacking interactions rather than Lewis acid - base bonding between boron and nitrogen. Cocrystallized benzene molecules are incorporated into a channel-like framework of 3. The electronic structure and photophysical properties were investigated by UV-visible absorption and emission spectroscopy and DFT calculations. The absorption and emission maxima experience a strong bathochromic shift relative to the non-fluorinated analogues, the origin of which has been further examined by DFT calculations.
