TTF-C-BHTCNQ

We present in Table 2 a "zoo" of molecules (13-22) prepared by the ORP, which we have shown to form PL monolayers at the air-water interface, and which transfer well onto A1 or glass or other slides as LB monolayers. TTF-C-BHTCNQ, 13, was difficult to purify the "neutral" form seemed to deposit "pancake-style" onto the water, and synthetic difficulties forced its abandonment. The strongest films (highest collapse pressure, most vertical pressure-area isotherm) were obtained with BDDAP-C-BHTCNQ, 15 (Fig. 1). The acceptor HMTCAQ used in 17 and 18 was easy to prepare [9], but is well known to be a weak two-electron acceptor, with a highly non-planar geometry [22]. 

Fig. 9. Structure (top), MNDO conformation (middle), and MNDO van der Waals shape, viewed from the acceptor end (bottom) for TTF-C-FHTCNQ, a variant of TTF-C-BHTCNQ, 13 lD=8.197eV, Aa = 2.975 eV,... 

---