The present invention provides photochromic compounds and derivatives thereof as shown in claim
1
and methods of use of these compounds and derivatives. The present invention also provides photochromic optical probes capable of undergoing light directed reversible transition between a first state and a second state. The invention also teaches methods of determining and controlling reversible optical biomolecular interactions, for example binding of calcium in a subject.
Multimodal Magnetic-Resonance/Optical-Imaging Contrast Agent Sensitive to NADH
作者:Chuqiao Tu、Ryan Nagao、Angelique Y. Louie
DOI:10.1002/anie.200900984
日期:2009.8.17
Agents get smart: A macrocycle‐based gadolinium complex undergoes an isomerization in the presence of NADH, leading to an r1 relaxivity increase of 54 %, while the intense fluorescence disappears (see scheme). This agent could facilitate the use of magnetic resonance imaging (MRI) for probing tissue redox status.
molecules taken individually, unusual photochromic behaviour has been detected with compounds for which a double bond of Z-configuration links both entities by the 5 or 5′ positions of the naphthalenic parts. Indeed, in this case the thermally stable uncoloured and coloured forms (bistable system) can be photochemically converted acting as photochemical switches.