A Λ-shaped cyanostilbene derivative: multi-stimuli responsive fluorescence sensors, rewritable information storage and colour converter for w-LEDs
作者:Wenyan Fang、Wang Zhao、Pan Pei、Rui Liu、Yuyang Zhang、Lin Kong、Jiaxiang Yang
DOI:10.1039/c8tc02973c
日期:——
with fluorescence emission both in solution and the solid state was designed, synthesized and characterized. Its colour and fluorescence emission can be switched by external stimuli including acid/base, trinitrophenol (picricacid, PA) and grinding. The 1H NMR spectra of TSA were recorded before and after alternately adding trifluoroacetic acid (TFA) and triethylamine (TEA), which confirmed that acidichromism
设计,合成和表征了一种新型的具有活性氨基的Λ型α-氰基二苯乙烯衍生物(TSA),其在溶液和固态下均具有荧光发射。可以通过外部刺激(包括酸/碱,三硝基苯酚(苦味酸,PA)和研磨)来切换其颜色和荧光发射。分别添加三氟乙酸(TFA)和三乙胺(TEA)之前和之后,记录了TSA的1 H NMR谱图,这证实了酸致变色现象起源于TSA和TSA-H +之间质子化/去质子化的转变。粉末X射线衍射(PXRD),差示扫描量热法(DSC)和扫描电子显微镜(SEM)揭示了原始化合物与研磨化合物之间的晶态-非晶态转变,这种转变可以合理地解释机械变色(MFC)的发光特性。结果表明,TSA可用作酸/碱和PA的荧光传感器,并可用作可重写信息存储材料。而且,基于其期望的固态荧光发射,它也可以应用于白光发光二极管(w-LED)。
Simultaneous imaging of lysosomal and mitochondrial viscosity during mitophagy using molecular rotors with dual-color emission
A ternary complex among D2, DNA and CB[7] can be formed.
一个三元复合物可以形成在D2、DNA和CB[7]之间。
Multi-stimuli fluorescence responsiveness of α-cyanostilbene derivative: AIEE, stimuli response to polarity, acid, force and light, applications in anti-counterfeiting and single phosphor w-OLED
作者:Chongyang Zeng、Juan Dai、Tianshun Yang、Zengjia Wang、Ying Gao、Jun Xia、Yang Chen、Mei Sun
DOI:10.1016/j.dyepig.2023.111906
日期:2024.3
presented in TSC. This phenomenon is relatively rare in small moleculefluorescent compounds. The results of SEM and DLS reveal the AIEE of TSC is mainly due to the fact that molecular self-assembly into nanofiber networks in the aggregated state limiting the distortion of molecules. DFT calculations show that the polarity stimuli-response (fluorescence from green to orange) is closely related to intramolecular
Utilizing high-permeability fluorescent probes with large Stokes shifts, this study successfully differentiated between diseased and healthy tissues in liver, adipose, and small intestine.