Study on Photochromism of Amphiphilic Spiropyran Monolayers by Surface Reflection.

Reversible photochromism of polynorbornenes bearing spiropyran side groups

ABSTRACT In this paper, the synthesis and characterization of poly(norbornene) homo- and copolymers bearing spiropyran side groups are described. Difficulties in the homopolymerization of spiropyrans due to the opened merocyanine form were observed leading to low polymerization yields for homopolymers while copolymers with 10 mol% spiropyran content were prepared in good yield. Spiropyrans are ...

Photochromism of Spiropyran in UHV-Prepared Thin Films

a study on insurer solvency by panel data model: the case of iranian insurance market

the aim of this thesis is an approach for assessing insurer’s solvency for iranian insurance companies. we use of economic data with both time series and cross-sectional variation, thus by using the panel data model will survey the insurer solvency.

Single-reflection attenuated total reflection of organic monolayers on silicon.

Attenuated total re ection (ATR) spectroscopy, a wellknown surface technique, is frequently used for examining very thin Ž lms on substrates. However, when it comes to examining thin Ž lms on silicon substrates, the high refractive index of the substrates seems to preclude ATR analysis. This paper demonstrates that extraordinary sensitivity can be achieved by using ATR to analyze monolayers on...

Induction of a photostationary ring-opening-ring-closing state of spiropyran monolayers on the semimetallic Bi(110) surface.

Molecular switches on metal surfaces typically show very little photoreactivity. Using scanning tunneling microscopy, we show that the ring-opening-ring-closing switch nitrospiropyran thermally and optically isomerizes to the open merocyanine form on a Bi(110) surface. Irradiation by blue light of a monolayer of spiropyran molecules leads to mixed domains of the two isomers. At large illuminati...