Novel lasing action in dye-doped polymer films coated on large psedudotabular Ag islands

Article Abstract:

An approximately 15 [mu]m thick polymer film doped (approximately 5 mM) with a laser dye, when coated on large pseudotabular Ag islands and pumped by a nanosecond laser, generates a single sharp stimulated emission with a bandwidth down to 2.5 nm. This low-threshold (approximately 1 ml/[cm.sup.2]) lasing action is attributed to the surface-enhanced fluorescence of the dyes very near the Ag islands.

Semiconductors and related devices, Semiconductor and Related Device Manufacturing, Thick Film Materials, Analysis, Fluorescence, Thick films, Semiconductor doping, Wavelength

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Monolayer structures of highly photoluminescent furan oligoaryls: An approach to improve packing crystallinity of dithiolated aromatics

Article Abstract:

Mono- and dithiolated furan-containing oligoaryls could be successfully synthesized via a one pot strategy starting from propargylic dithioacetals. It was found that localized lattice packing of crystalline dithiolated furan oligoaryls on Au(111) could be assembled by immersing preadsorbed n-dodecanethiol self-assembled monolayers in the corresponding deposition solutions.

Monomolecular films, Aromatic compounds

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Effect of metal-metal interactions on electron transfer: an STM study of one-dimensional metal string complexes

Article Abstract:

Manipulation of the electron-transfer (ET) properties of the molecular wires is feasible by rational design and fine-tune of the metal-metal interactions. It also shows the effect of metal-metal interactions on the scanning tunneling microscopy (STM) topographic height, a result of ET via tunneling through the metal string complexes.

Electron transport, Metal bonding, Scanning tunneling microscopy

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