Abstract: The present invention relates to novel fluorinated 3,6-diaminoxanthene compounds derived from the basic structural formula (I) and to their uses as photostable fluorescent dyes, e.g. for immunostainings and spectroscopic and microscopic applications, in particular in conventional microscopy, stimulated emission depletion (STED) reversible saturable optically linear fluorescent transitions (RESOLFT) microscopy, and fluorescence correlation spectroscopy. The claimed compounds are also useful as molecular probes in various spectroscopic applications.

Abstract: The present invention relates to novel fluorinated 3,6-diaminoxanthene compounds derived from the basic structural formula (I) and to their uses as photostable fluorescent dyes, e.g. for immunostainings and spectroscopic and microscopic applications, in particular in conventional microscopy, stimulated emission depletion (STED) reversible saturable optically linear fluorescent transitions (RESOLFT) microscopy, and fluorescence correlation spectroscopy. The claimed compounds are also useful as molecular probes in various spectroscopic applications.

Abstract: In high spatial resolution imaging, a structure in a specimen is marked with a substance which, in a first electronic state, is excited by light of one wavelength to emit fluorescent light, which is also converted from its first into a second electronic state by that light, and which returns from its second into its first electronic state. The specimen is imaged onto a sensor at a spatial resolution not resolving an average spacing between neighboring molecules of the substance, and exposed to the light at such an intensity that the molecules in the first state are alternately excited to emit fluorescent light and converted into their second state, and that at least 10% of the molecules presently in their first state lie at a distance from their closest neighboring molecules in their first state which is greater than the spatial resolution of the imaging onto the sensor.

Abstract: For imaging of a structure, the structure is marked with a substance which can be converted by a switching signal from a first into a second state, and which provides an optical measurement signal in one of its states, only. The switching signal is applied such that at least 10% of the molecules of the substance being in the measurement signal providing state are at a distance from their closest neighbors, which is greater than the spatial resolution limit of imaging the specimen onto a sensor array, which in turn is greater than an average distance between the molecules of the substance. From an intensity distribution of the measurement signal recorded with the sensor array, the position is only determined for those molecules of the substance which are at a distance from their closest neighboring molecules in the measurement signal providing state, which is greater than the spatial resolution limit.

Abstract: For imaging of a structure, the structure is marked with a substance which can be converted by a switching signal from a first into a second state, and which provides an optical measurement signal in one of its states, only. The switching signal is applied such that at least 10% of the molecules of the substance being in the measurement signal providing state are at a distance from their closest neighbors, which is greater than the spatial resolution limit of imaging the specimen onto a sensor array, which in turn is greater than an average distance between the molecules of the substance. From an intensity distribution of the measurement signal recorded with the sensor array, the position is only determined for those molecules of the substance which are at a distance from their closest neighboring molecules in the measurement signal providing state, which is greater than the spatial resolution limit.

Abstract: In high spatial resolution imaging, a structure in a specimen is marked with a substance which, in a first electronic state, is excited by light of one wavelength to emit fluorescent light, which is also converted from its first into a second electronic state by that light, and which returns from its second into its first electronic state. The specimen is imaged onto a sensor at a spatial resolution not resolving an average spacing between neighboring molecules of the substance, and exposed to the light at such an intensity that the molecules in the first state are alternately excited to emit fluorescent light and converted into their second state, and that at least 10% of the molecules presently in their first state lie at a distance from their closest neighboring molecules in their first state which is greater than the spatial resolution of the imaging onto the sensor.

Abstract: For the high spatial resolution imaging of a structure of interest in a specimen, a substance is selected from a group of substances which have a fluorescent first state and a nonfluorescent second state; which can be converted fractionally from their first state into their second state by light which excites them into fluorescence, and which return from their second state into their first state; the specimen's structure of interest is imaged onto a sensor array, a spatial resolution limit of the imaging being greater (i.e.

Abstract: For the high spatial resolution imaging of a structure of interest in a specimen, a substance is selected from a group of substances which have a fluorescent first state and a nonfluorescent second state; which can be converted fractionally from their first state into their second state by light which excites them into fluorescence, and which return from their second state into their first state; the specimen's structure of interest is imaged onto a sensor array, a spatial resolution limit of the imaging being greater (i.e.

Abstract: A method for protecting a metal surface from galling and corrosion includes a step of providing a protective dry film on the metal surface. The film includes a solid lubricant and a conducting polymer, the conducting polymer having lubricant properties and being capable of binding the solid lubricant to the metal surface. Threaded metal joint surfaces coated with the film are capable of resisting galling under high pressure and high torque conditions, even after several fastening and unfastening operations or over a long period of time. Protection from corrosion is also provided by the film. The method and film are economical in that only a single layer of protective compound need be applied in order to provide metal surfaces with both lubrication and protection against corrosion, and problems such as removal or leakage, which are associated with protective compounds that use oils, are avoided.