Two assemblies composed of single-molecule magnets (SMMs) linked by photochromic ligands, [Cu(II)(2)Tb(III)(2)(L)(2)(NO(3))(2)(dae-o)(2)]·2(n-BuOH) (1) and {[Cu(II)Tb(III)(L)(n-BuOH)(0.5)](2)(dae-c)(3)}·5(DMF)·4(n-BuOH)·2(H(2)O) (2), were synthesized by reacting the SMM [Cu(II)Tb(III)(L)(NO(3))(3)] (H(2)L = 1,3-bis((3-methoxysalicylidene)amino)propane) and photochromic molecules, H(2)dae-o and ...

Dynamics of photochromism have been studied in anil compounds using femtosecond transient absorption and picosecond fluorescence spectroscopies. The experimental observations were compared with the theoretical results obtained Ž . from AM1–SCF calculations. Excited-state intramolecular proton transfer ESIPT and photochromic reaction were found to occur from the S state, whereas normal fluoresce...

The photochromic effect of thin amorphous W03 films, i.e., the coloration upon exposing the sample to ultra$iolet light, has been investigated by means of optically excited surface plasmons. Due to the high sensitivity of this technique, it was possible to investigate the dynamics of this effect on a scale as short as seconds. Our results demonstrate the dominant role of oxygen during the color...

The synthesis and characterization of a series of fluorescent bis-dithienylethene (DTE)-based bipyridines, where the donor (D) and acceptor (A) groups are located on the same thiophene ring of the DTE unit, and their zinc(II) and rhenium(I) complexes are reported. Their photochromic properties have been investigated by UV-visible and (1)H NMR spectroscopy. These studies reveal that in non-polar...

Current multi-analytes chips are limited with requiring numbers of sensors, complex synthesis and compounds screen. It is expected to develop new principles and techniques to achieve high-performance multi-analytes testing with facile sensors. Here, we investigated the correlative multi-states properties of a photochromic sensor (spirooxazine), which is capable of a selective and cross-reactive...

Photochromic channel blockers provide a conceptually simple and convenient way to modulate neuronal activity with light. We have recently described a family of azobenzenes that function as tonic blockers of K(v) channels but require UV-A light to unblock and need to be actively switched by toggling between two different wavelengths. We now introduce red-shifted compounds that fully operate in t...

The aim of this work was the synthesis and study of photochromic compounds with new properties. Five dithienylethene type compounds (1a-3a and 1b-2b) were synthesized and studied. They can reversibly interconvert between two thermally stable forms, an open and a closed one, by using light of different wavelengths as triggers. Compounds 2 and 3 represent oligothiophenes endowed with a photoactiv...