Intrinsic and Extrinsic Temperature-Dependency of Viscosity-Sensitive Fluorescent Molecular Rotors

Environment-sensitive behavior of fluorescent molecular rotors

Molecular rotors are a group of fluorescent molecules that form twisted intramolecular charge transfer (TICT) states upon photoexcitation. When intramolecular twisting occurs, the molecular rotor returns to the ground state either by emission of a red-shifted emission band or by nonradiative relaxation. The emission properties are strongly solvent-dependent, and the solvent viscosity is the pri...

Title: Mapping Microbubble Viscosity Using Fluorescence Lifetime Imaging of Molecular Rotors Short title: Molecular rotors measure microbubble viscosity using FLIM

A novel approach to blood plasma viscosity measurement using fluorescent molecular rotors.

Molecular rotors, a group of fluorescent molecules with viscosity-dependent quantum yield, were tested for their suitability to act as fluorescence-based plasma viscometers. The viscosity of samples of human plasma was modified by the addition of pentastarch (molecular mass 260 kDa, 10% solution in saline) and measured with a Brookfield viscometer. Plasma viscosity was 1.6 mPa x s, and the mixt...

Sensing of Flow and Shear Stress Using Fluorescent Molecular Rotors

Molecular rotors are fluorescent molecules with two competing pathways of deexcitation: They return from the excited singlet state to the ground state either through fluorescence or through nonradiative intramolecular rotation. Molecular rotors are known as viscosity sensors, because intramolecular rotation rate depends on the viscosity of the solvent. In this study, we describe a new observati...

A Study of Intrinsic and Extrinsic Motivation Iranian mysticism gravamen

Gravamen is a kind of lyrical literature in which human tries own suffering and distress to reveal the audience. There are several types of gravamen. One of them is the mystical breakthrough that comes from the intrinsic and extrinsic motivation. Including Intrinsic motivations can be mentioned the sadness of separation from partner, the sadness of separation from partner, sensual temptations, ...