The preparation of a new cappedsilicamesoporous material, Rh‐Azo‐S, for on‐command delivery applications in the presence of target enzymes is described. The material consists of nanometric mesoporous MCM‐41‐like supports loaded with Rhodamine B and capped with an azopyridine derivative. The material was designed to show “zero delivery” and to display a cargo release in the presence of reductases
Squaraines as Fluoro−Chromogenic Probes for Thiol-Containing Compounds and Their Application to the Detection of Biorelevant Thiols
作者:Jose V. Ros-Lis、Beatriz García、Diego Jiménez、Ramón Martínez-Máñez、Félix Sancenón、Juan Soto、Fernando Gonzalvo、M. Carmen Valldecabres
DOI:10.1021/ja031987i
日期:2004.4.1
A highlyselective colorimetric chemodosimeter for thiol-containing compounds in aqueous solutions is reported. The design protocol makes use of a highly specific reaction between thiols and the electrophilic four-membered ring of highly colored, fluorescent squaraine backbones. At neutral pH selective decoloration and total emission quenching was found due to the rupture of the highly delocalized
Synthesis, crystal structure and third-order nonlinear optical properties in the near-IR range of a novel stilbazolium dye substituted with flexible polyether chains
N-bis(2-(2-methoxyethoxy)ethyl)amino]styryl]-N-methylpyridinium tetraphenylborate, was designed, synthesized and fully characterized. Third-order nonlinear opticalproperties for the new stilbazolium salt have been explored. The results show that the novel dye possesses very large values of the real part of the cubic hyperpolarizability χ(3), up to 10−12 esu, and displays maximum two-photon absorption cross
Light-Induced Protein Dimerization by One- and Two-Photon Activation of Gibberellic Acid Derivatives in Living Cells
作者:Korwin M. Schelkle、Tristan Griesbaum、Dirk Ollech、Steffy Becht、Tiago Buckup、Manuel Hamburger、Richard Wombacher
DOI:10.1002/anie.201409196
日期:2015.2.23
We developed a highly efficient system for light‐induced proteindimerization in live cells using photo‐caged derivatives of the phytohormone gibberellicacid (GA3). We demonstrate the application of the photo‐activatable chemical inducer of dimerization (CID) for the control of protein translocation with high spatiotemporal precision using light as an external trigger. Furthermore, we present a new