Fluorescence sensors for detection of water based on tetraphenylethene–anthracene possessing both solvatofluorochromic properties and aggregation-induced emission (AIE) characteristics

TPE-(An-CHO)4 has been developed as an SFC (solvatofluorochromism)/AIEE (aggregation-induced emission enhancement)-based fluorescence sensor for detection of water over a wide range from low to high water content regions in solvents.

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Tetraphenylethene– and diphenyldibenzofulvene–anthracene-based fluorescence sensors possessing photo-induced electron transfer and aggregation-induced emission enhancement characteristics for detection of water

New Journal of Chemistry ◽

10.1039/c8nj02522c ◽

2018 ◽

Vol 42 (16) ◽

pp. 13339-13350 ◽

Cited By ~ 14

Author(s):

Yousuke Ooyama ◽

Rizumu Sagisaka ◽

Toshiaki Enoki ◽

Nao Tsunoji ◽

Joji Ohshita

Keyword(s):

Electron Transfer ◽

Water Content ◽

High Water ◽

High Water Content ◽

Fluorescence Sensors ◽

Aggregation Induced Emission ◽

Emission Enhancement ◽

Photo Induced Electron Transfer

RS-1 and RS-2 have been developed as PET/AIEE hybrid fluorescence sensors for detection of water in the low and high water content regions in solvents.

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Colorimetric and ratiometric fluorescence sensing of water based on 9-methyl pyrido[3,4-b]indole-boron trifluoride complex

Dalton Transactions ◽

10.1039/c8dt04527e ◽

2019 ◽

Vol 48 (6) ◽

pp. 2086-2092 ◽

Cited By ~ 4

Author(s):

Toshiaki Enoki ◽

Yousuke Ooyama

Keyword(s):

Water Content ◽

Boron Trifluoride ◽

Fluorescent Sensor ◽

High Water ◽

High Water Content ◽

Ratiometric Fluorescence ◽

Fluorescence Sensing ◽

Water Based ◽

Ratiometric Fluorescence Sensing ◽

Boron Trifluoride Complex

9-Methyl pyrido[3,4-b]indole-boron trifluoride complex 9-MP-BF3 was developed as a colorimetric and ratiometric fluorescent sensor for the detection of water from the low- to high-water-content regions in solvents.

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Optimalization of multiresidue method for the determination of pesticide residues in fruits

Progress in Plant Protection ◽

10.14199/ppp-2021-025 ◽

2021 ◽

Vol 61 (3) ◽

pp. 221-238

Keyword(s):

Water Content ◽

Pesticide Residues ◽

High Water ◽

High Water Content ◽

Detector Response ◽

Wide Range ◽

Comprehensive Determination ◽

Selective Detectors ◽

Active Substances

The main aim of this study was to optimize the QuEChERS methodology for the comprehensive determination of pesticide residues using a simple and inexpensive gas chromatography equipped with selective detectors working simultaneously (GC-ECD/NPD). The method was validated in accordance with the SANTE/11945/2015 guidelines. Representative fruit matrices were chosen from the commodities group with high water content (apples), and with high acidity and high water content (strawberry) for a 160 compounds in the range of 0.005−0.02 mg/kg. The accuracy of the method was as required (recovery: 70–120%, precision: below 20%) for 135 active substances in apples samples and 137 in strawberries samples. The main advantages of the methodology include: good detector response linearity (R2 above 0.995), low limits of detection (0.005 mg/kg for more than 20 compounds, 0.01 mg/kg for about 120 compounds), possibility of simultaneous determination of a wide range of compounds (including some “difficult” ones) without use of a single residue methods. The simultaneous use of two selective detectors allows to obtain more data during a single dose of the sample and confirmation of the result for most compounds, which allows to prevent false positives ones.

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Oxidation Lipid on Fish Cake Catfish (Pangasius sp.) Dissolved in The Extract of Bay Leaf (Eugenia polyantha)

Journal of Marine and Coastal Science ◽

10.20473/jmcs.v8i3.21158 ◽

2020 ◽

Vol 8 (3) ◽

pp. 91

Author(s):

Mahiastuti Tribuana Tungga Dewi ◽

Boedi Setya Rahardja ◽

Agustono Agustono

Keyword(s):

Water Content ◽

Natural Antioxidants ◽

High Water ◽

Experimental Methods ◽

Quality Score ◽

High Water Content ◽

Antioxidant Compounds ◽

White Meat ◽

Wide Range ◽

Significant Difference

Catfish (Pangasius sp.) As a source of animal protein. Fish catfish have a thick white meat so that it can be processed into a wide range of diversified products. The process of fried fish cake can result in fat or autooxidation process. Autooxidation can be inhibited by the presence of antioxidant compounds. One source of natural antioxidants are bay leaf Eugenia polyantha.This research was carried out by experimental methods and the use of experimental design of randomized Complete Design (RAL). RAL is used when the material and condition of the experiment are homogeneous. This research consists of four concentrations of extract treatment bay leaf, namely 0%, 10%, 20%, 30%. Fish cake has been fried done soaking for 30 minutes. Water content showed no significant difference (p> 0.05) at 24 hours to 28, this indicated that the addition of bay leaf extract did not affect the moisture content during storage. The high water content at 0 hour is caused by the process of soaking the fish cake in the extract solution. The highest value is shown by the concentration of 30% at the hour to 0 that is 52.78%, this indicates that the fish cake by soaking can meet the quality score SNI 7757:2013 which is a maximum of 60%. The fat content in the fish cake continues to decrease, indicating the occurrence of oxidation during storage. Levels of TBA in fish cake continue to increase that can be slowed by the extract of bay leaves with a concentration of 30%.

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Evaluation of an Immunoisolation Membrane Formed by Incorporating a Polyvinyl Alcohol Hydrogel within a Microporous Filter Support

Cell Transplantation ◽

10.1177/096368979700600607 ◽

1997 ◽

Vol 6 (6) ◽

pp. 585-595 ◽

Cited By ~ 2

Author(s):

Andrew R. Baker ◽

Ronald L. Fournier ◽

Jeffrey G. Sarver ◽

Jennifer L. Long ◽

Peter J. Goldblatt ◽

...

Keyword(s):

Polyvinyl Alcohol ◽

Water Content ◽

Structural Integrity ◽

High Water ◽

Membrane Properties ◽

High Water Content ◽

Hybrid Hydrogel ◽

Wide Range ◽

Pva Hydrogel

An immunoisolation membrane formed by incorporating a high water content polyvinyl alcohol (PVA) hydrogel into a microporous polyether sulfone (PES) filter has been investigated in this study. The PVA hydrogel is formed in situ within the filter pores via glutaraldehyde (GA) crosslinking under acidic conditions. The tortuous nature of the microporous filter pores securely anchors the embedded hydrogel to provide excellent structural integrity. The high void fraction of the PES filter support (>80%) and high water content of the PVA hydrogel (>85% water by weight) allow excellent solute transport rates, while an appropriate level of glutaraldehyde crosslinking supplies the required molecular size selectivity. In vitro permeability measurements made with solutes covering a wide range of molecular sizes demonstrate high transport rates for small nutrient molecules with rapidly diminishing permeabilities above a molecular weight of approximately 1,000 Dalton. Implantation experiments show that the membrane properties are not deleteriously affected by prolonged in vivo exposure or common sterilization techniques. Thus, this hybrid hydrogel/filter membrane system offers a promising approach to the immunoisolation of implanted cells.

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Evaporative water loss and the role of cocoon formation in Australian frogs

Australian Journal of Zoology ◽

10.1071/zo98013 ◽

1998 ◽

Vol 46 (5) ◽

pp. 405 ◽

Cited By ~ 28

Author(s):

Philip C. Withers

Keyword(s):

Water Content ◽

Water Loss ◽

High Water ◽

Linear Increase ◽

Evaporative Water Loss ◽

High Water Content ◽

Evaporative Water ◽

Wide Range ◽

Very High

Measurements of evaporative water loss (EWL; mg min-1) and resistance (R; sec cm-1) for various Australian frogs indicate three general allometric patterns: non-cocooned and non-‘waterproof’ frogs with EWL ∝ Mass0.30 and R independent of body mass at about 1–3 sec cm-1, cocooned frogs with EWL reduced about 50–200-fold and R about 50–200 sec cm-1, and ‘waterproof’ frogs with EWL reduced about 5–100- fold and R about 5–100 sec cm-1. Cocooned frogs have an exponential reduction in EWL and fairly linear increase in R over time, corresponding to the temporal addition of layers to the cocoon. The biophysical properties of cocoon are generally similar for various species, although there is some variation in both resistance per thickness (5–20 × 104 s cm-2) and diffusion coefficient (0.4–2.4 × 10 –5 cm2 s-1). The hygroscopic property of frog cocoon resembles that of mammalian stratum corneum, hair and wool, and mucopolysaccharides; there is a slight increase in water content of cocoon over a wide range of humidities but a very steep increase in water content and substantial hydration and swelling at >96% RH. This extreme hygroscopic behaviour of frog cocoon at very high RH may reflect less polymer cross-linking in frog cocoon and its high digestibility. The prevention of over-hydration of frog cocoon in vivo may be attributed to the restriction of high water content to only very high RH (>96%).

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Hydrogels as Antibacterial Biomaterials

Current Pharmaceutical Design ◽

10.2174/1381612824666180213122953 ◽

2018 ◽

Vol 24 (8) ◽

pp. 843-854 ◽

Cited By ~ 6

Author(s):

Weiguo Xu ◽

Shujun Dong ◽

Yuping Han ◽

Shuqiang Li ◽

Yang Liu

Keyword(s):

Mechanical Properties ◽

Drug Delivery ◽

Tissue Engineering ◽

Water Content ◽

Oxygen Permeability ◽

Structural Diversity ◽

High Water ◽

Clinical Applications ◽

High Water Content ◽

Biomedical Field

Hydrogels, as a class of materials for tissue engineering and drug delivery, have high water content and solid-like mechanical properties. Currently, hydrogels with an antibacterial function are a research hotspot in biomedical field. Many advanced antibacterial hydrogels have been developed, each possessing unique qualities, namely high water swellability, high oxygen permeability, improved biocompatibility, ease of loading and releasing drugs and structural diversity. In this article, an overview is provided on the preparation and applications of various antibacterial hydrogels. Furthermore, the prospects in biomedical researches and clinical applications are predicted.

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