Bis(ethynylstyryl)benzene films grown by molecular beam deposition in a photon field

Fabrication of Organic Thin Films by Dual Molecular Beam Deposition with Excimer Laser.

“…Using this method, we obtained the films of a bis(styryl)benzene derivative, which could not be fabricated by usual vapor deposition method, through the cis-to-trans photoisomerization during the deposition. [4,5] Moreover, we performed thin film fabrication using dual molecular beams in order to induce an intermolecular reaction of hetero-molecules. In this paper, the chemical reaction and the fabrication behaviors were discussed for bi-functional tiolor ethynyl terminated molecules.…”

“…This phenomenon was explained by the finding that one-way cis-to-trans photoisomerization occurred for cis-cis BESB absorbed on the substrate surface upon KrF excimer laser irradiation during the deposition process. [4,5] We have reported that BESB could react intermolecularly through the terminal ethynyl groups upon the high dose UV irradiation following the photoisomerization. [6] In this case, an IR peak assigned to C-H stretching mode of ethynyl group strongly appeared at 3276 cm' as shown in Fig.…”