142340-15-6Relevant articles and documents
A ratiometric fluorescent probe for oxalate based on alkyne-conjugated carboxamidoquinolines in aqueous solution and imaging in living cells
He, Chunsheng,Qian, Xuhong,Xu, Yufang,Yang, Chunmei,Yin, Liyan,Zhu, Weiping
, p. 1034 - 1037 (2011)
A novel ratiometric fluorescent probe for oxalic acid was designed and synthesized, based on the zinc-containing [DAQZ@2Zn2+] complex. It shows highly selective "on-off" fluorescence changes with a more than 20 nm blue shift in wavelength for oxalic acids in aqueous solution. Moreover, it can fluorescently respond to oxalic acid in living cells.
Color-Tunable Light-up Bioorthogonal Probes for In Vivo Two-Photon Fluorescence Imaging
Dou, Yandong,Wang, Yajun,Duan, Yukun,Liu, Bin,Hu, Qinglian,Shen, Wei,Sun, Hongyan,Zhu, Qing
supporting information, p. 4576 - 4582 (2020/03/23)
Light-up bioorthogonal probes have attracted increasing attention recently due to their capability to directly image diverse biomolecules in living cells without washing steps. The development of bioorthogonal probes with excellent fluorescent properties
Halogen Bond-Assisted Electron-Catalyzed Atom Economic Iodination of Heteroarenes at Room Temperature
Kazi, Imran,Guha, Somraj,Sekar, Govindasamy
, p. 6642 - 6654 (2019/06/14)
A halogen bond-assisted electron-catalyzed iodination of heteroarenes has been developed for the first time under atom economic condition at room temperature. The iodination is successful with just 0.55 equiv of iodine and 0.50 equiv of peroxide. The kinetic study indicates that the reaction is elusive in the absence of a halogen bond between the substrate and iodine. The formation of a halogen bond, its importance in lowering the activation barrier for this reaction, the presence of radical intermediates in a reaction mixture, and the regioselectivity of the reaction have been demonstrated with several control experiments, spectroscopic analysis, and quantum chemical calculations. Allowing the formation of the halogen bond may offer a new strategy to generate the reactive radical intermediates and to enable the otherwise elusive electron-catalyzed reactions under mild reaction conditions.
A novel pyrene-containing fluorescent organogel derived from a quinoline-based fluorescent porbe: Synthesis, sensing properties, and its aggregation behavior
Huang, Chang-Bo,Chen, Li-Jun,Huang, Junhai,Xu, Lin
, p. 19538 - 19549 (2014/05/20)
A new family of pyrene-containing compounds 2-4 derived from aminoquinoline-containing fluorescent probe 1 were successfully synthesized and well characterized. The investigation of the absorption and emission spectra of these compounds revealed that the photophysical properties were significantly affected by the substitution of pyrene. Moreover, these compounds exhibited selective fluorescence behaviour towards Zn2+ in aqueous solution. The gelation properties of these compounds were investigated by the "stable to inversion of a test tube" method. Interestingly, 1,8-bis-substituted compound 4 displayed stable gel-formation properties in acetone, dioxane, tetrahydrofuran, ethyl acetate, chloroform, and dichloromethane. The morphologies of the xerogels were investigated by scanning electron microscopy (SEM) and laser scanning confocal microscopy (LSCM). The concentration- and temperature-dependent emission properties, and concentration- and temperature-variable 1H NMR spectroscopy of compound 4 were investigated, which suggested that both π-π stacking interaction and hydrogen bonding were the driving forces for the process of self-aggregation and the gel formation. In addition, studies on the luminescence properties indicated that 4 had the ability to form a fluorescent organogel with interesting fluorescence behaviour. More importantly, it was found that compound 4 could form a stimuli-responsive gel that had a sensitive gel-to-sol transition response to heating or adding Zn2+. the Partner Organisations 2014.
Luminescent chiral organoboron 8-aminoquinolate-coordination polymers
Tokoro, Yuichiro,Nagai, Atsushi,Chujo, Yoshiki
experimental part, p. 563 - 568 (2010/11/16)
We have successfully synthesized optically active organoboron aminoquinolate-based coordination polymers bearing the chiral side chain derived from L-alanine, and studied their optical behavior by UV-vis and photoluminescence spectroscopies. Higher absolute quantum yields (φF) of the obtained polymers, measured by integrating sphere method, were observed with electron-withdrawing substituent (φF = 0.80) than with electron-donating substituent (φF = 0.52). The circular dichroism (CD) study in the mixed solvents of CHCl3 and DMF showed that the secondary structures of the obtained polymers were stabilized by hydrogen-bonding interaction in the side chain. From concentration dependence on the CD spectra, the chirality of the obtained polymers originated from the nature of one molecule. Copyright
Synthesis of highly luminescent organoboron polymers connected by bifunctional 8-aminoquinolate linkers
Tokoro, Yuichiro,Nagai, Atsushi,Chujo, Yoshiki
scheme or table, p. 3693 - 3701 (2011/10/12)
New organoboron aminoquinolate-based polymers linked by π-conjugated bridge were prepared by SonogashiraHagihara coupling of organoboron aminoquinolate-based bisiodo monomers bearing biphenyl or bithiophene moiety with 1,4-diethynylbenzene derivatives. Te
