【摘 要】
：
Aggregation-induced emission (AIE) active photochromic molecules have attracted growing attention for their versatile applications. Here we designed and synthes
【机 构】
：
School of Chemistry and Chemical Engineering, Key Lab of Clean Energy Materials Chemistry of Guangdo
论文部分内容阅读
Aggregation-induced emission (AIE) active photochromic molecules have attracted growing attention for their versatile applications. Here we designed and synthesizedfive newly unsymmetrical photochromic diarylethene (DAE) dyads (BTE1–5) by connecting tetraphenylethene (TPE) and aromatic substituent via bithienylethene(BTE)bridge.Thechemicalstructuresofthosecompounds wereidentifiedby1HNMR,13C NMR and HRMS. The absorption and emission of these dyads were investigated by UV-vis andfluorescence spectroscopy, respectively. The results showed that all those compounds exhibited typically AIE or aggregation-induced emission enhancement (AIEE) characteristic. Particularly, when an aggregation-caused quenching (ACQ)fluorophore (triphenylamine) was grafted to the molecule, connecting with TPE via BTE-bridge, the ACQ phenomenon was dissipated and converted to an AIE luminophore, and those compounds exhibited photochromism upon irradiation with altative UV and visible light. The solution or solid of those compounds showed distinctlyfluorescence switchingONorOFFobservation upon irradiation with altative UV and visible light. It is interesting that BTE1 could be applied in recording and rewritable information storage, and the cyclization quantum yields could be affected by substituent significantly.
其他文献
Seven 2,6-disubstituted N-(2-phenoxy)ethyl imidazo[1,2-a]pyridine-3-carboxamide series containing various amine moieties were designed and synthesized as new an
In this study, we designed and synthesized a series of phthalazinone acridine derivatives as dual PARP and Topo inhibitors. MTT assays indicated that most of th
A quinine-derived thiourea-catalyzed inter-/intramolecular Michael cycloaddition of chromone-oxindole/benzofuranone synthons with 3-substituted methylenebenzofu
In this study, various nonionic surfactants (NS) with different ethylene oxide (EO) numbers and tail lengths and its binary blends with anionic surfactants (AS)
A novel meroterpenoid, euphoractone (1), was isolated from the extracts of the roots of Euphorbiafischeriana Steud. Its structure was determined by spectroscopi
Four new seco-dibenzocyclooctadiene lignans, kadlongilignans A-D (1-4), consisting of a rare 6,7-seco-(1), two 15,16-seco-(2 and 3) and a 9,10-seco-dibenzocyclo
The isoindolinone and biaryl scaffolds are prevalent in natural products and drug molecules, which have showed broad and interesting biological activities. The
CallicarpabodinieriisaChinesetraditionalmedicineherbwithanti-inflammatory activityinclinic.Herein, we report two new 9,10-seco and etherified abietane diterpeno
A ratiometricfluorescent hybrid nanoprobe CDs-1 for arginine (Arg), exhibiting high sensitivity (the limit of detection, LOD, being 6.5 × 10-8 mol/L) and excel