Fluorous hydrophobic fluorescent (E)-Stilbene derivatives for application on security paper

Phototriggered structures: Latest advances in biomedical applications

“…In recent years, photochromic compounds integrated into the supramolecular systems have been extensively applied in phototriggers-based DDSs 137 , 219 , 220 , 221 , 222 , 223 , 224 , 225 , 226 , 227 . To date, a variety of photochromic derivatives such as stilbene 228 , 229 , 230 , spiropyranes 231 , 232 , 233 , 234 , 235 , spirooxazine 236 , 237 , dithienylethene 238 , 239 , 240 , 241 , azobenzenes 242 , 243 , 244 , 245 , 246 and 1,3-diazabicyclo[3.1.0]hex-3-ens, as a rather less renowned photochromic derivative 247 , 248 , 249 , 250 , 251 have been developed that undergo structural changes through rotation or inversion on the original double bond, ring-opening process or the mixture of both processes in response to light irradiation. PTDDSs can be either reversible or irreversible depending on the type of the substrates that absorb the light.…”

A novel donor–π–acceptor halochromic 2,6-distyrylnaphthalene chromophore: synthesis, photophysical properties and DFT studies

“…The synthesis of uorophores incorporating distyrylbenzene pconjugated systems has attracted considerable attention because of their high potential applications in optoelectronic and sensory devices as well as uorescent probes in medical utilization and in organic light-emitting diodes. [1][2][3][4][5][6] On the other hand, organic molecules that possess intramolecular charge transfer (ICT) character are important in a large number of areas, such as organic solar cells, polarity probes and nonlinear optics. 7,8 Donor-p-acceptor (D-p-A; where D is an electron-donating group, A is an electron-accepting group, and p is a conjugating moiety) systems with different congurations have been extensively developed because their absorption spectra and energy gaps can be readily tuned by controlling the ICT character using different electron-donor and electron-acceptor groups.…”

Synthesis of some new distyrylbenzene derivatives using immobilized Pd on an NHC-functionalized MIL-101(Cr) catalyst: photophysical property evaluation, DFT and TD-DFT calculations

“…Stilbene compounds are a signicant class of uorescent organic p-conjugated compounds, which are widely used in the above mentioned applications. [17][18][19][20][21][22][23][24][25][26] Due to the systematic relationship between the uorescence properties of the uorescent materials and their chemical structures, stilbenes are an interesting class of compounds which permit us to simply ne tune the photophysical properties via available chemical modications. [27][28][29][30][31] To synthesize stilbenes, different organic methodologies such as Wittig reaction, [32][33][34] Horner-Wadsworth-Emmons reaction, 35 catalytic aldehyde olenations, 36 and Mizoroki-Heck reaction 37,38 have been developed.…”