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1. Thiophene-containing tetraphenylethene derivatives with different aggregation-induced emission (AIE) and mechanofluorochromic characteristics

Author:
Yin, Ya; Chen, Zhao; Yang, Yue; Liu, Gang; Fan, Congbin; Pu, Shouzhi
Source:
RSC advances 2019 v.9 no.42 pp. 24338-24343
ISSN:
2046-2069
Subject:
fluorescent substances,   etc   ; color; fluorescence;     Show all 3 Subjects
Abstract:
... Four thiophene-containing tetraphenylethene derivatives were successfully synthesized and characterized. All these highly fluorescent compounds showed typical aggregation-induced emission (AIE) characteristics and emitted different fluorescence colors including blue-green, green, yellow and orange in the aggregation state. In addition, these luminogens also exhibited various mechanofluorochromic p ...
DOI:
10.1039/c9ra04611a

2. Methyl-restricted rotor rotation on the stator produces high-efficiency fluorescence emission: a new strategy to achieve aggregation-induced emission

Author:
Yang, Haicheng; Zhou, Xinyue; Hui, Tianqi; Han, Yingying; Jiang, Xiaonan; Yan, Jie
Source:
RSC advances 2019 v.9 no.21 pp. 12078-12084
ISSN:
2046-2069
Subject:
fluorescent substances,   etc   ; chemical reactions; energy; fluorescence; moieties;     Show all 5 Subjects
Abstract:
... At present, we have realized that the aggregation-induced emission (AIE) achieves the purpose of fluorescence enhancement by restricting rotations to reduce intermolecular or intramolecular energy loss. Based on this idea, we synthesized a novel fluorene-based fluorescent compound with a restricted rotor rotation on the stator through the Suzuki coupling reaction. The luminescence effect was evalu ...
DOI:
10.1039/c9ra01636h

3. 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

4. Comparative study on the pretreatment of algae-laden water by UV/persulfate, UV/chlorine, and UV/H2O2: Variation of characteristics and alleviation of ultrafiltration membrane fouling

Author:
Wan, Ying; Xie, Pengchao; Wang, Zongping; Ding, Jiaqi; Wang, Jingwen; Wang, Songlin; Wiesner, Mark R.
Source:
Water research 2019 v.158 pp. 213-226
ISSN:
0043-1354
Subject:
fluorescent substances,   etc   ; algae; chlorine; dissolved organic carbon; fouling; hydrophobicity; models; oxidants; oxidation; ultrafiltration;     Show all 10 Subjects
Abstract:
... In this study, ultraviolet based advanced oxidation processes (UV-AOPs) including UV/persulfate (UV/PS), UV/chlorine, and UV/H2O2 were employed to alleviate ultrafiltration membrane fouling during the treatment of algae-laden water. The results show that UV/PS pretreatment exhibited the best performance on fouling control, followed by the UV/H2O2 pretreatment. The fouling mitigation performance im ...
DOI:
10.1016/j.watres.2019.04.034

5. 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

6. 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

7. Synthesis and Photophysical Properties of Benzotriazole-Derived Unnatural α-Amino Acids

Author:
Bell, Jonathan D.; Morgan, Timaeus E. F.; Buijs, Ned; Harkiss, Alexander H.; Wellaway, Christopher R.; Sutherland, Andrew
Source:
Journal of organic chemistry 2019 v.84 no.16 pp. 10436-10448
ISSN:
1520-6904
Subject:
fluorescent substances,   etc   ; Lewis bases; Suzuki reaction; amino acids; aromatic compounds; boronic acids; chemical structure; nitrites; organic chemistry; triazoles;     Show all 10 Subjects
Abstract:
... The synthesis of a new class of benzotriazole-derived α-amino acid is described using a highly efficient nucleophilic aromatic substitution of ortho-fluoronitrobenzenes with l-3-aminoalanine and a polymer-supported nitrite reagent-mediated diazotization and cyclization of the subsequent 1,2-aryldiamines as the key steps. Further functionalization of the benzotriazole unit by preparation of halogen ...
DOI:
10.1021/acs.joc.9b01685

8. Coupling of capillary electrophoresis with electrospray ionization multiplexing ion mobility spectrometry

Author:
Guo, Jianheng; Li, Guozhu; Zhang, Hanghang; Jia, Xu; Meng, Qingyan; Liu, Wenjie
Source:
Electrophoresis 2019 v.40 no.12-13 pp. 1639-1647
ISSN:
0173-0835
Subject:
fluorescent substances,   etc   ; acetonitrile; ammonium acetate; capillary electrophoresis; data collection; electrolytes; hydrodynamics; ionization; liquids; quaternary ammonium compounds; spectrometers; spectroscopy; temperature;     Show all 13 Subjects
Abstract:
... In this work, ion mobility spectrometry (IMS) function as a detector and another dimension of separation was coupled with CE to achieve two‐dimensional separation. To improve the performance of hyphenated CE‐IMS instrument, electrospray ionization correlation ion mobility spectrometry is evaluated and compared with traditional signal averaging data acquisition method using tetraalkylammonium bromi ...
DOI:
10.1002/elps.201800462

9. Fluorescent nitric oxide donor for the detection and killing of Pseudomonas aeruginosa

Author:
Hibbard, Hailey A. J.; Reynolds, Melissa M.
Source:
Journal of materials chemistry B 2019 v.7 no.12 pp. 2009-2018
ISSN:
2050-7518
Subject:
fluorescent substances,   etc   ; Pseudomonas aeruginosa; antibacterial properties; antibiotics; bacteria; bacterial infections; chemistry; color; fluorescence; multiple drug resistance; nitric oxide; ultraviolet radiation;     Show all 12 Subjects
Abstract:
... The epidemic of multidrug-resistant bacteria calls for the improvement of both detection methods for bacterial infections and methods of treatment. Nitric oxide is a known potent antibacterial agent, but due to its gaseous and highly reactive nature, it is difficult to incorporate into a stable antibacterial compound. In this paper, we synthesize a nitric oxide donor attached to a fluorescent comp ...
DOI:
10.1039/c8tb02552e

10. 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

11. Microstructure, bacterial community and metabolic prediction of multi-species biofilms following exposure to di-(2-ethylhexyl) phthalate (DEHP)

Author:
Li, Yi; Zhang, Peisheng; Wang, Longfei; Wang, Chao; Zhang, Wenlong; Zhang, Huanjun; Niu, Lihua; Wang, Peifang; Cai, Minhui; Li, Wentao
Source:
Chemosphere 2019 v.237 pp. 124382
ISSN:
0045-6535
Subject:
fluorescent substances,   etc   ; Acinetobacter; activated sludge; acute exposure; bacterial communities; biochemical pathways; biofilm; bioreactors; bioremediation; chromatography; fluorescence; microstructure; models; moieties; organic matter; phthalates; polymers; prediction; protein structure;     Show all 19 Subjects
Abstract:
... The occurrence and transportation of phthalate esters in biofilms from natural and engineered sources have attracted considerable research interest. However, little information is available highlighting the responses of multi-species biofilms in terms of their physicochemical structure and bacterial community induced by phthalate esters. Di-(2-ethylhexyl) phthalate (DEHP), a model phthalate eater, ...
DOI:
10.1016/j.chemosphere.2019.124382

12. 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

13. Luminescent bis(benzo[d]thiazolyl)quinoxaline: facile synthesis, nucleic acid and protein BSA interaction, live-cell imaging, biopharmaceutical research and cancer theranostic application

Author:
Babu, Lavanya Thilak; Jadhav, Gajanan Raosaheb; Paira, Priyankar
Source:
RSC advances 2019 v.9 no.16 pp. 8748-8752
ISSN:
2046-2069
Subject:
fluorescent substances,   etc   ; DNA; biopharmaceuticals; carcinoma; cervix; colorectal neoplasms; cytotoxicity; fluorescence emission spectroscopy; human cell lines; humans; image analysis; luminescence; neoplasm cells; nuclear magnetic resonance spectroscopy;     Show all 14 Subjects
Abstract:
... A series of quinoxaline-2-hydroxyphenylbenzothiazole scaffolds were synthesized and characterized using NMR, UV, fluorescence spectroscopy and LCMS. These newly synthesized compounds were found to be cytotoxic in human epithelioid cervix carcinoma (HeLa) and human colon cancer cell lines (Caco-2). Selectivity of the compounds 7e and 7g are more than 9 fold higher in Caco-2 cells with respect to th ...
DOI:
10.1039/c9ra01498e

14. Transdermal delivery of 40-nm silk fibroin nanoparticles

Author:
Takeuchi, Issei; Shimamura, Yosuke; Kakami, Yuki; Kameda, Tsunenori; Hattori, Keitaro; Miura, Seiji; Shirai, Hiroyuki; Okumura, Mutsuo; Inagi, Toshio; Terada, Hiroshi; Makino, Kimiko
Source:
Colloids and surfaces 2019 v.175 pp. 564-568
ISSN:
0927-7765
Subject:
fluorescent substances,   etc   ; amino acids; bioavailability; colloids; dermis; drug carriers; drugs; fibroins; hair follicles; hydrophilicity; hydrophobicity; mice; nanoparticles; permeability; silk; standard deviation; storage quality; storage temperature; transdermal application;     Show all 19 Subjects
Abstract:
... Transdermal administration of drugs improves their bioavailability and is capable of systemic and local treatment. To improve the skin permeability of drugs, nano-sized systems have attracted attention as drug carriers for transdermal drug delivery system. We considered that silk fibroin composed of a crystalline region with many hydrophobic amino acids and an amorphous region with many hydrophili ...
DOI:
10.1016/j.colsurfb.2018.12.012

15. Insight into indicators related to the humification and distribution of humic substances in Sphagnum and peat at different depths in the Qi Zimei Mountains

Author:
Bu, Gui-Jun; He, Xiao-Song; LI, Ting-Ting; Wang, Zheng-Xiang
Source:
Ecological indicators 2019 v.98 pp. 430-441
ISSN:
1470-160X
Subject:
fluorescent substances,   etc   ; Sphagnum; biodegradability; carbon; chlorophyll; environmental indicators; grasses; humic substances; humification; humus; mountains; peat; peatlands; scanning electron microscopy; transmission electron microscopy;     Show all 15 Subjects
Abstract:
... Humification of Sphagnum occurs in peat bogs and locks up carbon as peat. Useful indicators and methods of humification can reflect the process of peat formation to some extent. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV/Vis spectra and excitation-emission matrix (EEM) spectra coupled with parallel factor (PARAFAC) analysis were applied to characterize the humif ...
DOI:
10.1016/j.ecolind.2018.11.031

16. 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

17. 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

18. The Effects of Cold Plasma Application on Quality and Chemical Spoilage of Pacific White Shrimp (Litopenaeus vannamei) during Refrigerated Storage

Author:
Zouelm, Fatemeh; Abhari, Khadijeh; Hosseini, Hedayat; Khani, Mohamadreza
Source:
Journal of aquatic food product technology 2019 v.28 no.6 pp. 624-636
ISSN:
1547-0636
Subject:
fluorescent substances,   etc   ; Litopenaeus vannamei; aquaculture; catechol oxidase; cold; cold storage; enzyme activity; free fatty acids; melanosis; pH; peroxide value; postmortem changes; shelf life; shrimp; spoilage; storage time; thiobarbituric acid-reactive substances; total volatile basic nitrogen;     Show all 18 Subjects
Abstract:
... Pacific white shrimp (Litopenaeus vannamei) is an important species in aquaculture worldwide. Post-mortem changes during cold storage reduce the quality of shrimp and shorten its shelf life. Cold plasma (CP) was applied for 45, 90, and 150s as T₁, T₂, and T₃, respectively, to fresh harvested shrimp. The biochemical parameters and melanosis were analyzed in comparison to metabisulphite treated (TM) ...
DOI:
10.1080/10498850.2019.1627452

19. Urbanization altered regional soil organic matter quantity and quality: Insight from excitation emission matrix (EEM) and parallel factor analysis (PARAFAC)

Author:
Chai, Liwei; Huang, Muke; Fan, Hao; Wang, Jie; Jiang, Dalin; Zhang, Mengjun; Huang, Yi
Source:
Chemosphere 2019 v.220 pp. 249-258
ISSN:
0045-6535
Subject:
fluorescent substances,   etc   ; carbon sequestration; factor analysis; fluorescence; fluorescence emission spectroscopy; land use change; models; multivariate analysis; soil; soil ecology; soil organic matter; soil sampling; total nitrogen; total organic carbon; urbanization; water content; China;     Show all 17 Subjects
Abstract:
... Soil organic matter (SOM) play an important role in soil ecology and global carbon dynamic. As one of the most sever and irreversible land use change, urbanization could alter the regional carbon storage and composition pattern. However how urbanization influence on SOM is still unclear. In this study, we collected soil samples from highly urbanized area of Beijing, China and explore the quantity ...
DOI:
10.1016/j.chemosphere.2018.12.132

20. Effect of glazing and rosemary (Rosmarinus officinalis) extract on preservation of mud shrimp (Solenocera melantho) during frozen storage

Author:
Shi, Jing; Lei, Yutian; Shen, Huixing; Hong, Hui; Yu, Xunpei; Zhu, Beiwei; Luo, Yongkang
Source:
Food chemistry 2019 v.272 pp. 604-612
ISSN:
0308-8146
Subject:
fluorescent substances,   etc   ; Rosmarinus officinalis; Solenocera; disulfide bonds; drip loss; fluorescence; free fatty acids; frozen storage; lipid content; lipids; nitrogen; peroxide value; protein degradation; rosemary; sensory properties; shrimp; storage temperature; total volatile basic nitrogen;     Show all 18 Subjects
Abstract:
... In this study, glazing with water and rosemary (Rosmarinus officinalis) extract were applied on frozen mud shrimp (Solenocera melantho) and stored at −20 °C for 24 weeks. Quality loss and protein and lipid changes of shrimp were evaluated by total volatile basis nitrogen (TVB-N), drip loss, moisture distribution, sulfhydryl content (SH), disulfide bond, intrinsic fluorescence intensity, lipid cont ...
DOI:
10.1016/j.foodchem.2018.08.056