Optical properties of thiol terminated biphenyloxazole ordered monolayers on gold surface

New thiol terminated biphenyloxazole molecules are synthesized. A self assembled monolayer has been prepared on gold surface and spectral and luminescent properties of free molecules and ordered films have been studied experimentally and theoretically (DFT). The luminescence polarization degree is a...

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Veröffentlicht in:	Applied surface science 2007-10, Vol.254 (1), p.116-119
Hauptverfasser:	Kukhta, A.V., Kukhta, I.N., Kolesnik, E.E., Lugovskii, A.P., Neyra, O.L., Meza, E.
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorption and luminescence spectrum Biphenyloxazole Condensed matter: electronic structure, electrical, magnetic, and optical properties Density functional theory, local density approximation DFT calculation Electron states Exact sciences and technology Methods of electronic structure calculations Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity) Optical constants: refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of bulk materials and thin films Photoluminescence Physics Polarization SAM Solid organic materials Thiol
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Beschreibung
Zusammenfassung:	New thiol terminated biphenyloxazole molecules are synthesized. A self assembled monolayer has been prepared on gold surface and spectral and luminescent properties of free molecules and ordered films have been studied experimentally and theoretically (DFT). The luminescence polarization degree is about 40%. New absorption and luminescence bands have been found experimentally and confirmed theoretically. The highest occupied and the lowest unoccupied molecular orbitals of adsorbed molecules strongly differ from not adsorbed thiol molecules.
ISSN:	0169-4332 1873-5584
DOI:	10.1016/j.apsusc.2007.07.069