532983-84-9Relevant academic research and scientific papers
Effect of the linkages on the self-assembly and photophysical properties of 4,7-diphenyl-2,1,3-benzothiadiazole-based luminescent polycatenars
Hu, Jinliang,Xiao, Yulong,Chang, Qing,Gao, Hongfei,Cheng, Xiaohong
, (2019)
Three series of 4,7-diphenyl-2,1,3-benzothiadiazole (DBTD)based polycatenars containing a central 4,7-diphenyl-2,1,3-benzothiadiazole moiety connected to 3,4,5-trialkoxyl benzene units at both ends through ether (-OCH2-), ester (-OOC-)or amide (-HNCO-)linkages were synthesized via Suzuki coupling reaction as key step. The polarities of the linkages had great effect on their self-assembly and photophycial properties. Both ether and amide compounds were mesogens, while the ester compounds were non-mesogens. The ether compounds displayed Colhex/p6mm phases, while the amide compound displayed two kinds of columnar phases i.e. columnar rectangular phase with p2mm and columnar hexagonal phase with p6mm lattices depending on temperature. The column phases could be aligned in electric field or under mechanical shearing. The ether and amide compounds showed the significant red-shifted maximum absorption and emission. In the solid and gel states, both ether and amide compounds were yellow luminescence, while ester compounds were green luminescence.
A highly sensitive and selective fluorescent probe for tracking hydrogen sulfide in red wine
Zhang, Lina,Luo, Sen,Chen, Zhehong,Cui, Linyun
, p. 1986 - 1991 (2021/09/28)
A novel fluorescent H2S probe (LODNBS) composed of 2,4-dinitrobenzenesulfonyl (DNBS) units was designed and synthesized. The DNBS units not only blocked PET and ICT effects, but also triggered H2S-mediated thiolysis to cause the fluorescence changes. Probe LODNBS performed excellent sensitivity and selectivity for H2S, strong fluorescence enhancement (65-fold), low detection limit (72 nM) and real-time response (within 5 min). The sensing mechanism of LODNBS towards H2S was proposed and verified by ESI-MS and 1H NMR analysis. Under a UV lamp, the fluorescence color changes could be easily detected by the naked eye. In addition, the probe LODNBS could track H2S in red wine samples with high accuracy and good recovery, and has practical value in food analysis.
Phenolic Bis-styrylbenzo[ c]-1,2,5-thiadiazoles as Probes for Fluorescence Microscopy Mapping of Aβ Plaque Heterogeneity
Zhang, Jun,Konsmo, Audun,Sandberg, Alexander,Wu, Xiongyu,Nystr?m, Sofie,Obermüller, Ulrike,Wegenast-Braun, Bettina M.,Konradsson, Peter,Lindgren, Mikael,Hammarstr?m, Per
, p. 2038 - 2048 (2019/02/26)
A fluorescent bis-styryl-benzothiadiazole (BTD) with carboxylic acid functional groups (X-34/Congo red analogue) showed lower binding affinity toward Aβ1-42 and Aβ1-40 fibrils than its neutral analogue. Hence, variable patterns of neutral OH-substituted bis-styryl-BTDs were generated. All bis-styryl-BTDs showed higher binding affinity to Aβ1-42 fibrils than to Aβ1-40 fibrils. The para-OH on the phenyl rings was beneficial for binding affinity while a meta-OH decreased the affinity. Differential staining of transgenic mouse Aβ amyloid plaque cores compared to peripheral coronas using neutral compared to anionic bis-styryl ligands indicate differential recognition of amyloid polymorphs. Hyperspectral imaging of transgenic mouse Aβ plaque stained with uncharged para-hydroxyl substituted bis-styryl-BTD implicated differences in binding site polarity of polymorphic amyloid plaque. Most properties of the corresponding bis-styryl-BTD were retained with a rigid alkyne linker rendering a probe insensitive to cis-trans isomerization. These new BTD-based ligands are promising probes for spectral imaging of different Aβ fibril polymorphs.
Novel and polymerizable fluorescent dichromatic dye as well as preparation method and purpose thereof
-
, (2017/12/27)
The invention discloses novel dichromatic dye as well as a preparation method and a purpose thereof. A material is synthesized by adopting a Suzuki reaction, a hydrolysis reaction and a substitution reaction, is excellent dichromatic dye, has high quantum
Synthesis and self-assembly of luminescent hexacatenar molecules incorporating a 4,7-diphenyl-2,1,3-benzothiadiazole core
Huang, Danxiang,Prehm, Marko,Gao, Hongfei,Cheng, Xiaohong,Liu, Yongsong,Tschierske, Carsten
, p. 21387 - 21395 (2016/03/08)
A new polycatenar liquid crystal containing a 4,7-diphenyl-2,1,3-benzothiadiazole core and three alkoxy chains at each end has been synthesized via a copper-catalyzed azide-alkyne click reaction and investigated by polarizing microscopy, DSC, XRD scattering, SEM, UV-vis spectroscopy and photoluminescence measurements. This compound can self-assemble into an oblique columnar liquid crystalline phase in the bulk state and form organogels in different organic solvents. It shows highly fluorescent emission with large Stokes shift in solution and has binding selectivity to Li+ among a series of cations in DMSO-CH2Cl2 solution.
Green electrogenerated chemiluminescence of highly fluorescent benzothiadiazole and fluorene derivatives
Omer, Khalid M.,Ku, Sung-Yu,Wong, Ken-Tsung,Bard, Allen J.
supporting information; experimental part, p. 10733 - 10741 (2009/12/04)
A group of highly fluorescent 2,1,3-benzothiadiazole derivatives (BH0-BH3), including two fluorene derivatives (AB2 and C01) were synthesized and characterized. The electrochemical, spectroscopic, and electrogenerated chemiluminescence (ECL) properties of
