1300701-03-4Relevant academic research and scientific papers
Reversible solid-state mechanochromic luminescence originated from aggregation-induced enhanced emission-active Donor?Acceptor cruciform luminophores containing triphenylamine
Wang, Ying,Cheng, Dandan,Zhou, Hongke,Liu, Xingliang,Wang, Yonghui,Han,Zhang, Chao
, (2019)
Two D-A type cruciform luminophores FB-CTPAEB and DFB-CTPAEB were designed and prepared. The two compounds exhibited unique intramolecular charge-transfer (ICT) and solid-state fluorescence behavior. The results show that both compounds exhibit AIEE behavior and high solid-state luminescence efficiency (up to 0.693 and 0.442, respectively). Moreover, FB-CTPAEB and DFB-CTPAEB show remarkable mechanofluorochromic (MFC) properties. Once the as-prepared samples were subjected to grinding, the emission of the two cruciform luminophores was red shifted by 52 nm and 46 nm, correspondingly, their fluorescence colors changed from yellow and reddish orange to red, respectively. The fluorescence emission changes induced by grinding can be restored by solvent-fuming and regenerated by grinding. PXRD analysis revealed that the MFC behavior of FB-CTPAEB and DFB-CTPAEB came from the transformation between crystalline and amorphous states upon external stimuli. Meanwhile, the extension in molecular conjugation caused by planarization of molecular conformation and subsequent planar intramolecular charge transfer (PICT) process were responsible for the red-shifts in the PL spectra.
Spectrum-adjustable gathering, inducing and light-emitting type fluorescent materials as well as preparation method and application thereof
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Paragraph 0046; 0047, (2018/01/17)
The invention discloses spectrum-adjustable gathering, inducing and light-emitting type fluorescent materials as well as a preparation method and an application thereof. The fluorescent materials have the structure formula shown in the description, wherein Ar denotes phenyl, C1-C4 halogenated alkyl substituted phenyl, C1-C4 alkyl substituted phenyl, C1-C4 alkoxy substituted phenyl, thienyl, C1-C4 alkyl substituted thienyl, furyl, C1-C4 alkyl substituted furyl or naphthyl, and the fluorescent materials with the gathering, inducing and light-emitting functions are obtained as follows: aldehyde derivatives and 4-pyridylacetonitrile hydrochloride as raw materials are subjected to a simple condensation reaction, an intermediate is obtained and reacts with methyl iodide to produce an ionic compound, and finally, the ionic compound is subjected to replacement through potassium hexafluorophosphate. The fluorescent materials have the gathering, inducing and light-emitting characteristics, are cation compounds, can specifically label mitochondria in live cells and are excellent mitochondrion imaging dye.
Synthesis and characterizations of novel spindle-like terphenyl-type chromophores for non-linear optical materials
Shi, Zuosen,Zhang, Xiaolong,Yang, Guochun,Su, Zhongmin,Cui, Zhanchen
experimental part, p. 4110 - 4117 (2011/06/24)
A series of novel spindle-like terphenyl-type chromophores, based on 2,5-diphenyl-1,4-distyrylbenzene π-conjugating bridge, N,N-dimethyl and triphenyl amino donors, and Tricyanovinyldihydrofuran(TCF), 1,3,3-trimethyl-5- dicyanovinyl-1-cyclohexene (TDC) acceptors, have been synthesized successfully for the first time. And the non-linear optical properties were evaluated by using the finite-field (FF) method. The results show that, the first-order hyperpolarizability of the chromophores increase with the increase of the withdraw ability of the substituent group on the π-conjugating bridge.
