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1. Acid-Responsive Fluorescent Compounds Based on Nitro-Group-Substituted L-Shaped Pentacycles, Pyrrolo[1,2-a][1,8]naphthylidines

Author:
Tateno, Kotaro; Ogawa, Rie; Sakamoto, Ryota; Tsuchiya, Mizuho; Otani, Takashi; Saito, Takao
Source:
Organic letters 2014 v.16 no.12 pp. 3212-3215
ISSN:
1523-7052
Subject:
fluorescent substances,   etc   ; cations; chemical reactions; fluorescence; moieties; nuclear magnetic resonance spectroscopy; organic compounds; titration;     Show all 8 Subjects
Abstract:
... Acid-responsive fluorescent compounds were prepared by introducing a nitrophenyl group to L-shaped pentacycles with a pyrrolo[1,2-a][1,8]naphthylidine backbone. These compounds show almost no fluorescence under neutral conditions, but emit green to orange fluorescence upon addition of trifluoroacetic acid. Acid titration experiments and NMR spectroscopy, plus DFT calculations, show that formation ...
DOI:
10.1021/ol501226x

2. A molecular 1 : 2 demultiplexer

Author:
Perez-Inestrosa, Ezequiel; Montenegro, Jose-María; Collado, Daniel; Suau, Rafael
Source:
Chemical communications 2008 no.9 pp. 1085-1087
ISSN:
1364-548X
Subject:
fluorescent substances,   etc   ; chemical compounds; chemical reactions; fluorescence; photons; wavelengths;     Show all 6 Subjects
Abstract:
... A dual-channel fluorescent compound runs as a 1 : 2 digital demultiplexer (DEMUX) which can drive a single signal (proton) to two different destinations as a fluorescent photonic response; each fluorescent channel can be activated independently by careful selection of the excitation wavelength. ...
DOI:
10.1039/b717690b

3. A New Fluorenone-based Turn-on Fluorescent Al3+ Ion Sensor

Author:
Thangaraj, S. E.; Antony, E. J.; Selvan, G. T.; Selvakumar, P. M.; Enoch, I. V. M. V.
Source:
Journal of analytical chemistry 2019 v.74 no.1 pp. 87-92
ISSN:
1061-9348
Subject:
fluorescent substances,   etc   ; aluminum; color; fluorescence; lighting; metal ions; nuclear magnetic resonance spectroscopy; stoichiometry;     Show all 8 Subjects
Abstract:
... In this paper, we report a turn-on fluorescence sensing of Al³⁺ ion using a new fluorenone derivative. The imino derivative of 2-amino-9-fluorenone and mercapto-2-butanone is synthesized and characterized using IR, NMR, and mass spectral techniques. The fluorescence of the compound shows a large enhancement at the addition of Al³⁺ ions, and other metal ions show insignificant changes of the fluore ...
DOI:
10.1134/S1061934819010118

4. A novel method for detection of Newcastle disease virus with a fluorescent sialidase substrate

Author:
Takahashi, Tadanobu; Takano, Maiko; Agarikuchi, Takashi; Kurebayashi, Yuuki; Minami, Akira; Otsubo, Tadamune; Ikeda, Kiyoshi; Suzuki, Takashi
Source:
Journal of virological methods 2014 v.209 pp. 136-142
ISSN:
0166-0934
Subject:
fluorescent substances,   etc   ; Western blotting; Avian orthoavulavirus 1; neoplasm cells; neoplasms; antibodies; fluorescence; ambient temperature; viruses; glycoproteins; neurons; humans; enzyme inhibitors; mice; enzyme activity; guinea pigs; birds; protocols; staining; erythrocytes; sialidase;     Show all 21 Subjects
Abstract:
... Newcastle disease virus (NDV), belonging to the family Paramixoviridae, causes respiratory and neuronal symptoms in almost all birds. NDV has haemagglutinin-neuraminidase (HN) glycoprotein possessing sialidase activity. HN glycoprotein is highly expressed on the surface of NDV-infected cells, resulting in much higher sialidase activity in NDV-infected cells than in non-infected cells. It was repor ...
DOI:
10.1016/j.jviromet.2014.09.010

5. Antioxidant balance and accumulation of advanced glycation end products after the consumption of standard diets including Maillard reaction products from silver carp peptides

Author:
Yao, Ye; Han, Kaining; Dong, Shiyuan; Zeng, Mingyong; Liu, Zunying
Source:
Food & function 2016 v.7 no.11 pp. 4709-4719
ISSN:
2042-650X
Subject:
fluorescent substances,   etc   ; 2,2-diphenyl-1-picrylhydrazyl; Hypophthalmichthys molitrix; Maillard reaction products; advanced glycation end products; animal disease models; antioxidant activity; antioxidants; blood serum; diabetes; excretion; kidneys; liver; malondialdehyde; mice; molecular weight; oxidative stress; peptides; superoxide dismutase; temperature;     Show all 20 Subjects
Abstract:
... The aim of this research was to investigate the accumulation and excretion of AGEs including fluorescent compounds and N-ε-carboxymethyllysine (CML) in streptozotocin-induced diabetes C57BL/6J mice fed on a diet containing Maillard reaction products (MRPs) from a silver carp peptide–glucose model system at different heating temperatures for the first time, and analyze the relationship between thei ...
DOI:
10.1039/c6fo01183g

6. Application of high-performance magnetic nanobeads to biological sensing devices

Author:
Kabe, Yasuaki; Sakamoto, Satoshi; Hatakeyama, Mamoru; Yamaguchi, Yuki; Suematsu, Makoto; Itonaga, Makoto; Handa, Hiroshi
Source:
Analytical and bioanalytical chemistry 2019 v.411 no.9 pp. 1825-1837
ISSN:
1618-2642
Subject:
fluorescent substances,   etc   ; antigens; biosensors; blood serum; dispersibility; drugs; exosomes; fluorescence; immunoassays; magnetism; nanoparticles; neoplasms; proteins; rapid methods; screening;     Show all 15 Subjects
Abstract:
... Nanomaterials have extensive applications in the life sciences and in clinical diagnosis. We have developed magnetic nanoparticles with high dispersibility and extremely low nonspecific binding to biomolecules and have demonstrated their application in chemical biology (e.g., for the screening of drug receptor proteins). Recently, the excellent properties of nanobeads have made possible the develo ...
DOI:
10.1007/s00216-018-1548-y

7. Application potential of biochar in environment: Insight from degradation of biochar-derived DOM and complexation of DOM with heavy metals

Author:
Huang, Mei; Li, Zhongwu; Luo, Ninglin; Yang, Ren; Wen, Jiajun; Huang, Bin; Zeng, Guangming
Source:
The Science of the total environment 2019 v.646 pp. 220-228
ISSN:
0048-9697
Subject:
fluorescent substances,   etc   ; biochar; cadmium; chemometrics; copper; dissolved organic matter; factor analysis; fluorescence; heavy metals; hydrophobicity; moieties; polluted soils; polysaccharides; risk; soil remediation; spectroscopy; titration;     Show all 17 Subjects
Abstract:
... Biochar-derived dissolved organic matter (DOM) is important for determining the application potential of biochar in soil remediation. However, little is known about the degradation behavior of biochar-derived DOM and its interaction with heavy metals. Here, incubation experiments combined with quenching titration experiments, which analyzed by spectroscopic technology and chemometric method, were ...
DOI:
10.1016/j.scitotenv.2018.07.282

8. Applying ultraviolet/persulfate (UV/PS) pre-oxidation for controlling ultrafiltration membrane fouling by natural organic matter (NOM) in surface water

Author:
Tian, Jiayu; Wu, Cuiwei; Yu, Huarong; Gao, Shanshan; Li, Guibai; Cui, Fuyi; Qu, Fangshu
Source:
Water research 2018 v.132 pp. 190-199
ISSN:
0043-1354
Subject:
fluorescent substances,   etc   ; Fourier transform infrared spectroscopy; adhesion; dissolved organic carbon; drinking water treatment; fluorescence; fouling; hydrophilicity; hydrophobicity; hydroxyl radicals; molecular weight; oxidation; proteins; scanning electron microscopy; sulfates; surface water; ultrafiltration; ultraviolet radiation;     Show all 18 Subjects
Abstract:
... Membrane fouling is a recognized obstacle for the application of ultrafiltration (UF) for drinking water treatment. In this study, ultraviolet/persulfate (UV/PS) oxidation was employed as a pretreatment to control membrane fouling caused by natural organic matter (NOM) in surface water. The effects of UV/PS pretreatment on amounts and characteristics of NOM were investigated in terms of dissolved ...
DOI:
10.1016/j.watres.2018.01.005

9. A rapid spectrofluorimetric method for the determination of malondialdehyde in human plasma after its derivatization with thiobarbituric acid and vortex assisted liquid–liquid microextraction

Author:
Yahyavi, Hossain; Kaykhaii, Massoud; Hashemi, Mohammad
Source:
RSC advances 2016 v.6 no.3 pp. 2361-2367
ISSN:
2046-2069
Subject:
fluorescent substances,   etc   ; blood plasma; calibration; derivatization; detection limit; liquid-phase microextraction; malondialdehyde; pH; solvents; temperature; thiobarbituric acid;     Show all 11 Subjects
Abstract:
... A rapid, simple and sensitive methodology has been developed for the determination of trace levels of malondialdehyde (MDA) in human plasma. The method is based on the derivatization of MDA using thiobarbituric acid (TBA) to form a highly fluorescent compound, “MDA-TBA” at acidic pH. The TBA-derivatized MDA formed was preconcentrated using vortex assisted liquid–liquid microextraction into 90 μL o ...
DOI:
10.1039/c5ra22079c

10. A study of the effect of organic solvents on the fluorescence signal in a sequential injection analysis system

Author:
Bolinová, P.; Šrámková, I.; Sklenářová, H.; Acebal, C. C.; Fernández Band, B. S.; Solich, P.
Source:
Analytical methods 2014 v.6 no.23 pp. 9392-9396
ISSN:
1759-9679
Subject:
fluorescent substances,   etc   ; analytical methods; fluorescence; metsulfuron; models; quinine; solvents; sulfates; ultraviolet radiation;     Show all 9 Subjects
Abstract:
... A study of the effect of different organic solvents and their mixtures with water on the fluorescence intensity of two model compounds (quinine sulphate as a naturally fluorescent substance and metsulfuron methyl with fluorescent properties upon UV irradiation) was carried out in a sequential injection analysis system. ...
DOI:
10.1039/c4ay01977f

11. A sulfonating ionic liquid for one-pot pseudo four-component synthesis of novel 3-chlorosulfonyl-δ-sultones: A novel class of fluorescent compounds

Author:
Toorchi Roudsari, Saeedeh; Rad-Moghadam, Kurosh
Source:
Tetrahedron 2018
ISSN:
0040-4020
Subject:
fluorescent substances,   etc   ; acetophenones; ambient temperature; catalysts; chemical reactions; chemical structure; condensates; fluorescence; ionic liquids; nuclear magnetic resonance spectroscopy; spectral analysis;     Show all 11 Subjects
Abstract:
... An active imidazolium-based ionic liquid mixture was developed for efficient synthesis of some novel 4,6-diaryl-3-(chlorosulfonyl)-1,2-oxathiine-2,2-dioxides (chlorosulfonyl-δ-sultones) from simple acetophenones at room temperature. The ionic liquid mixture acts as a catalyst to condense two molecules of an acetophenone derivative and as a mild sulfonating agent to convert the resulting condensate ...
DOI:
10.1016/j.tet.2018.06.012

12. Asymmetrical/Symmetrical D−π–A/D−π–D Thiazole-Containing Aromatic Heterocyclic Fluorescent Compounds Having the Same Triphenylamino Chromophores

Author:
Tao, Tao; Ma, Bin-Bin; Peng, Yu-Xin; Wang, Xiao-Xu; Huang, Wei; You, Xiao-Zeng
Source:
Journal of organic chemistry 2013 v.78 no.17 pp. 8669-8679
ISSN:
1520-6904
Subject:
fluorescent substances,   etc   ; X-radiation; benzene; benzoic acid; carbon-hydrogen bond activation; electrochemistry; fluorescence; organic chemistry; thermal stability; thiazoles;     Show all 10 Subjects
Abstract:
... A family of linear asymmetrical D−π–A and symmetrical D−π–D types of thiazole-based aromatic heterocyclic fluorescent compounds bearing various electron-donating and electron-withdrawing tails (bromo, triphenylamino, pyridyl, thienyl and benzoic acid) have been designed and prepared successfully. Synthetic, structural, thermal, spectral and computational comparisons have been carried out for relat ...
DOI:
10.1021/jo401384g

13. A terpyridine-based test strip for the detection of Hg²⁺ in various water samples and drinks

Author:
Wang, Junjun; Rao, Qingpeng; Wang, Haiyan; Zhang, Qiong; Liu, Gang; Wu, Zhichao; Yu, Jianhua; Zhu, Xiaojiao; Tian, Yupeng; Zhou, Hongping
Source:
Analytical methods 2019 v.11 no.2 pp. 227-231
ISSN:
1759-9679
Subject:
fluorescent substances,   etc   ; beverages; chemical reactions; color; colorimetry; mercury; nitrogen; oxygen; pyridines; water solubility;     Show all 10 Subjects
Abstract:
... A novel efficient terpyridine-based colorimetric fluorescent compound, TPI, based on the Wittig reaction, was synthesized and impregnated on filter paper into test strips, which could be applied to naked-eye sensing of mercuric ions (Hg²⁺) in aqueous media through varied emission color from bright blue to yellow. TPI, with nitrogen from pyridine and oxygen from ether, had a high degree of water so ...
DOI:
10.1039/c8ay02249f

14. Authentication and adulteration detection of peanut oils of three flavor types using synchronous fluorescence spectroscopy

Author:
Huyan, Zongyao; Ding, Shaoxuan; Liu, Xiaoli; Yu, Xiuzhu
Source:
Analytical methods 2018 v.10 no.26 pp. 3207-3214
ISSN:
1759-9679
Subject:
fluorescent substances,   etc   ; adulterated products; cluster analysis; discriminant analysis; fatty acid composition; flavor; fluorescence emission spectroscopy; models; principal component analysis; vegetable oil; volatile compounds;     Show all 11 Subjects
Abstract:
... This study proposes a method to differentiate commercial peanut oils of various flavor types. Synchronous fluorescence spectroscopy (SyFS) associated with principal component analysis (PCA) and cluster analysis was employed to distinguish eight peanut oils from three flavor types and SyFS spectra were visualized using PCA and performed using linear discriminant analysis (LDA) to differentiate pean ...
DOI:
10.1039/c8ay00837j

15. Über das Auftreten von Pterinen, Tryptophan und dessen Derivate in verschiedenen Organen der Mutante white von Drosophila melanogaster

Author:
Bonse, Angelika
Source:
Zeitschrift für Naturforschung 2014 v.24 no.1 pp. 128-131
ISSN:
0932-0776
Subject:
fluorescent substances,   etc   ; Drosophila melanogaster; Malpighian tubules; animal ovaries; backcrossing; eggs; feces; hindgut; kynurenine; modifiers (genes); mutants; pteridines; tryptophan;     Show all 13 Subjects
Abstract:
... It was shown that the Malpighian tubules of the white-eyed mutant of Drosophila melanogaster have few fluorescent substances, as compared with the wild type. Apparently these Malpighian tubules are not able to take up and accumulate some pteridines, tryptophan and kynurenine. These substances, found in high amounts in meconia and feces, are excreted by the hind-gut. In the pattern of the fluoresce ...
DOI:
10.1515/znb-1969-0126

16. Biocommunication between Plants and Pollinating Insects through Fluorescence of Pollen and Anthers

Author:
Mori, Shinnosuke; Fukui, Hiroshi; Oishi, Masanori; Sakuma, Masayuki; Kawakami, Mari; Tsukioka, Junko; Goto, Katsumi; Hirai, Nobuhiro
Source:
Journal of chemical ecology 2018 v.44 no.6 pp. 591-600
ISSN:
0098-0331
Subject:
fluorescent substances,   etc   ; solar radiation; energy; ultraviolet radiation; fluorescence; honey bees; plant-insect relations; pollen; foraging; genes; color; cognition; Angiospermae; antioxidant activity; attractants; pollinating insects; odors;     Show all 17 Subjects
Abstract:
... Flowering plants attract pollinators via various stimuli such as odor, color, and shape. Factors determining the foraging behavior of pollinators remain a major theme in ecological and evolutionary research, although the floral traits and cognitive ability of pollinators have been investigated for centuries. Here we show that the autofluorescence emitted from pollen and anthers under UV irradiatio ...
DOI:
10.1007/s10886-018-0958-9

17. Cabazitaxel-loaded Poly(2-ethylbutyl cyanoacrylate) nanoparticles improve treatment efficacy in a patient derived breast cancer xenograft

Author:
Fusser, Markus; Øverbye, Anders; Pandya, Abhilash D.; Mørch, Ýrr; Borgos, Sven Even; Kildal, Wanja; Snipstad, Sofie; Sulheim, Einar; Fleten, Karianne Giller; Askautrud, Hanne Arenberg; Engebraaten, Olav; Flatmark, Kjersti; Iversen, Tore Geir; Sandvig, Kirsten; Skotland, Tore; Mælandsmo, Gunhild M.
Source:
Journal of controlled release 2019 v.293 pp. 183-192
ISSN:
0168-3659
Subject:
fluorescent substances,   etc   ; blood; breast neoplasms; cell lines; cytotoxicity; drugs; encapsulation; image analysis; immunohistochemistry; macrophages; mass spectrometry; mice; models; nanoparticles; neoplasm cells; patients; remission; therapeutics;     Show all 18 Subjects
Abstract:
... The effect of poly(2-ethyl-butyl cyanoacrylate) nanoparticles containing the cytotoxic drug cabazitaxel was studied in three breast cancer cell lines and one basal-like patient-derived xenograft model grown in the mammary fat pad of immunodeficient mice. Nanoparticle-encapsulated cabazitaxel had a much better efficacy than similar concentrations of free drug in the basal-like patient-derived xenog ...
DOI:
10.1016/j.jconrel.2018.11.029

18. Characteristics and mechanisms of catalytic ozonation with Fe-shaving-based catalyst in industrial wastewater advanced treatment

Author:
Li, Xufang; Chen, Weiyu; Ma, Luming; Huang, Yuanxing; Wang, Hongwu
Source:
Journal of cleaner production 2019 v.222 pp. 174-181
ISSN:
0959-6526
Subject:
fluorescent substances,   etc   ; active sites; catalysts; fluorescence; hydroxyl radicals; industrial wastes; industrial wastewater; moieties; molecular weight; oxidants; oxidation; ozonation; phosphates; pollutants; pollution control; total organic carbon;     Show all 16 Subjects
Abstract:
... Iron shavings were modified and used as the catalyst (named as Fe-shaving-based catalyst) for the ozonation of bio-treated coking wastewater. The difference of organic pollutants oxidation between catalytic and sole ozonation processes was characterized by MW (Molecular Weight) distribution and 3DEEM (Three-dimensional Excitation and Emission Matrix Fluorescence) analysis. Removals of the pollutan ...
DOI:
10.1016/j.jclepro.2019.03.084

19. Characteristics of the extracellular polymeric substance composition in an up-flow biological aerated filter reactor: The impacts of different aeration rates and filter medium heights

Author:
Ren, Jiehui; Cheng, Wen; Wan, Tian; Wang, Min; Meng, Ting; Lv, Taotao
Source:
Bioresource technology 2019 v.289 pp. 121664
ISSN:
0960-8524
Subject:
fluorescent substances,   etc   ; Nitrospirae; Proteobacteria; aeration; biofilm; biofilters; hydrophobicity; microbial communities; models; polymers;     Show all 10 Subjects
Abstract:
... In this study, the compositional characteristics of extracellular polymeric substances (EPS) were systematically explored to reveal their relationship with microbial community under different conditions in an up-flow biological aerated filter reactor. The aeration rates had a significant positive correlation (0.898 ≤ R ≤ 0.979) with the tightly bound (TB)-EPS contents, but basically showed an oppo ...
DOI:
10.1016/j.biortech.2019.121664

20. Characterization of Chromophoric Dissolved Organic Matter in the Littoral Zones of Eutrophic Lakes Taihu and Hongze during the Algal Bloom Season

Author:
Chen, Bingfa; Huang, Wei; Ma, Shuzhan; Feng, Muhua; Liu, Cheng; Gu, Xiaozhi; Chen, Kaining
Source:
Water 2018 v.10 no.7
ISSN:
2073-4441
Subject:
fluorescent substances,   etc   ; algal blooms; comparative study; dissolved organic matter; environmental management; eutrophication; factor analysis; fluorescence; humification; lakes; littoral zone; molecular weight; remote sensing; spectroscopy; trophic levels;     Show all 15 Subjects
Abstract:
... Chromophoric dissolved organic matter (CDOM) is a key component with a critical role in the littoral zones of eutrophic shallow lakes; yet the characteristics of CDOM in these zones remain seldom systematically reported. In this study, the differences in sources, biogeochemical characteristics, and fates of CDOM between the littoral zones of eutrophic lakes Taihu (LLT; frequently occurring algal b ...
DOI:
10.3390/w10070861