Molecular layer deposition is the process in which molecules are stacked on substrates one by one in order of preference in a vacuum. We studied the possibility using two kinds of molecules: pyromellitic dianhydride (A) and 2,4-diaminonitrobenzene or 4,4′-diaminodiphenyl ether (B). After forming a layer consisting of A (or B), we supplied molecule B (or A). The film rapidly thickened and became saturated in 10–60 s. The change in thickness induced in this step was about 5 Å, close to the size of the molecules involved. This indicates that a monomolecular layer of B (or A) grew on layer A (or B) and film growth self-terminated automatically. 15 steps of alternately supplying A and B produced a polymer film 100 Å thick.

Interference rings formation inside cellulose from a back-reflected femtosecond laser pulse J. Appl. Phys. 112, 066101 (2012) Anisotropic optical absorption of organic rubrene single nanoplates and thin films studied by μ-mapping absorption spectroscopy Appl. Phys. Lett. 101, 113103 (2012) Raman and low temperature photoluminescence spectroscopy of polymer disorder in bulk heterojunction solar cell films APL: Org. Electron. Photonics 5, 185 (2012) Raman and low temperature photoluminescence spectroscopy of polymer disorder in bulk heterojunction solar cell films Appl. Phys. Lett. 101, 083302 (2012) Crystal phase dependent photoluminescence of 6,13-pentacenequinone

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A method for asymmetric α-arylation of amino acid derivatives has been developed. The arylation was performed by Clayden rearrangement of ester enolates via memory of chirality to give hydantoins with an aryl-substituted tetrasubstituted carbon with up to 99% ee.