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1. Rational design of fluorescent chemosensor for Pd2+ based on the formation of cyclopalladated complex

Author:
Feng Xu; Dongkui Zhang; Qingyi Lu; Rui Zhang; Jiangbin Xia
Source:
Talanta 2023 v.253 pp. 123967
ISSN:
0039-9140
Subject:
ultraviolet radiation,   etc   ; bioimaging; chemical bonding; color; detection limit; fluorescence; ligands;     Show all 7 Subjects
Abstract:
... According to the assumption that the formation of C–Pd bond becomes a cyclopalladated complex (CPC), we designed and synthesized two C–N–N pincer ligands of BODIPY appended 2,2′-bipyridine derivatives (BP and BPB). It has been confirmed that the C–Pd bond does exist and plays a crucial role in “on-off” fluorescence behavior. Based on it, a coordination-induced fluorescence quenching sensor for Pd² ...
DOI:
10.1016/j.talanta.2022.123967

2. Synergistic disinfection of aerosolized bacteria and bacteriophage by far-UVC (222-nm) and negative air ions

Author:
Y.H. Lu; H. Wu; H.H. Zhang; W.S. Li; A.C.K. Lai
Source:
Journal of hazardous materials 2023 v.441 pp. 129876
ISSN:
0304-3894
Subject:
ultraviolet radiation,   etc   ; DNA; Escherichia coli; Staphylococcus epidermidis; air; bacteriophages; bioaerosols; disinfection;     Show all 8 Subjects
Abstract:
... Air ionizers and 222-nm krypton-chlorine (KrCl) excilamp have proven to be effective disinfection apparatus for bacteria and viruses with limited health risks. We determined inactivation efficiencies by operating them individually and in combined modules. Gram-positive and gram-negative bacteria, non-enveloped dsDNA virus, and enveloped dsRNA virus were examined in a designed air disinfection syst ...
DOI:
10.1016/j.jhazmat.2022.129876

3. Removal of virus aerosols by the combination of filtration and UV-C irradiation

Author:
Min Shang; Yadong Kong; Zhijuan Yang; Rong Cheng; Xiang Zheng; Yi Liu; Tongping Chen
Source:
Frontiers of environmental science & engineering 2023 v.17 no.3 pp. 27
ISSN:
2095-2201
Subject:
ultraviolet radiation,   etc   ; COVID-19 infection; aerosols; air; environmental science; filtration; irradiation; viruses;     Show all 8 Subjects
Abstract:
... The COVID-19 pandemic remains ever prevalent and afflicting—partially because one of its transmission pathways is aerosol. With the widely used central air conditioning systems worldwide, indoor virus aerosols can rapidly migrate, thus resulting in rapid infection transmission. It is therefore important to install microbial aerosol treatment units in the air conditioning systems, and we herein inv ...
DOI:
10.1007/s11783-023-1627-y

4. Surface regulation by bifunctional BODIPY to fabricate stable CsPbBr3 for multi-layered optical anti-counterfeiting

Author:
Xiaoxia Feng; Jinli Liu; Xiyue Zhao; Pengxiao Xu; Jiacheng Liu
Source:
Journal of colloid and interface science 2023 v.629 pp. 63-72
ISSN:
0021-9797
Subject:
ultraviolet radiation,   etc   ; cesium; density functional theory; fluorescence; heat; lead; ligands; solvents; thiols;     Show all 9 Subjects
Abstract:
... Cesium lead halide perovskite quantum dots (QDs) have attracted immense attention for luminescent materials due to their narrow emission bands and color-tunable emission. However, indispensable surface ligands originating from ligand-assisted synthesis strategies severely deteriorate the stability and luminescence properties of QDs since these ligands have a highly dynamic binding. Herein, we used ...
DOI:
10.1016/j.jcis.2022.08.129

5. Aging of poly (lactic acid)/poly (butylene adipate-co-terephthalate) blends under different conditions: Environmental concerns on biodegradable plastic

Author:
Zhenguo Wang; Jiannan Ding; Xiaojun Song; Lixing Zheng; Jichao Huang; Hua Zou; Zhenyu Wang
Source:
Science of the total environment 2023 v.855 pp. 158921
ISSN:
0048-9697
Subject:
ultraviolet radiation,   etc   ; air; biodegradability; environment; hydrolysis; irradiation; photolysis; physical properties; plastics; spectroscopy;     Show all 10 Subjects
Abstract:
... Biodegradable plastics (BPs) have been used to replace conventional plastics owing to their environmental harmless and ease of degradation. However, the aging processes of BPs in different environments remain unclear. In this study, we used poly (lactic acid)/poly (butylene adipate-co-terephthalate) (PLA/PBAT) films as model BPs and investigated the 30-d aging behavior of PLA/PBAT films under four ...
DOI:
10.1016/j.scitotenv.2022.158921

6. Fabrication and immediate release characterization of UV responded oregano essential oil loaded microcapsules by chitosan-decorated titanium dioxide

Author:
Lina Xu; Xinglian Xu; Yujuan Xu; Mingyuan Huang; Yali Li
Source:
Food chemistry 2023 v.400 pp. 133965
ISSN:
0308-8146
Subject:
ultraviolet radiation,   etc   ; bulk density; chitosan; encapsulation; food chemistry; oregano oil; thermal stability; titanium dioxide;     Show all 8 Subjects
Abstract:
... In the present study, in order to establish a triggerable system of core-shell structure, oregano essential oil (OEO) loaded microcapsules by chitosan-decorated titanium dioxide (TiO₂) were prepared and characterized to explore their immediate triggered release abilities by UV-mediated triggers. The surface modification of chitosan composite shells could improve encapsulation yield and loose bulk ...
DOI:
10.1016/j.foodchem.2022.133965

7. The association of COVID-19 incidence with temperature, humidity, and UV radiation – A global multi-city analysis

Author:
Luise Nottmeyer; Ben Armstrong; Rachel Lowe; Sam Abbott; Sophie Meakin; Kathleen M. O'Reilly; Rosa von Borries; Rochelle Schneider; Dominic Royé; Masahiro Hashizume; Mathilde Pascal; Aurelio Tobias; Ana Maria Vicedo-Cabrera; Eric Lavigne; Patricia Matus Correa; Nicolás Valdés Ortega; Jan Kynčl; Aleš Urban; Hans Orru; Niilo Ryti; Jouni Jaakkola; Marco Dallavalle; Alexandra Schneider; Yasushi Honda; Chris Fook Sheng Ng; Barrak Alahmad; Gabriel Carrasco-Escobar; Iulian Horia Holobâc; Ho Kim; Whanhee Lee; Carmen Íñiguez; Michelle L. Bell; Antonella Zanobetti; Joel Schwartz; Noah Scovronick; Micheline de Sousa Zanotti Stagliorio Coélho; Paulo Hilario Nascimento Saldiva; Magali Hurtado Diaz; Antonio Gasparrini; Francesco Sera
Source:
Science of the total environment 2023 v.854 pp. 158636
ISSN:
0048-9697
Subject:
ultraviolet radiation,   etc   ; COVID-19 infection; absolute humidity; air temperature; autocorrelation; climatic zones; environment; time series analysis;     Show all 8 Subjects
Abstract:
... The associations between COVID-19 transmission and meteorological factors are scientifically debated. Several studies have been conducted worldwide, with inconsistent findings. However, often these studies had methodological issues, e.g., did not exclude important confounding factors, or had limited geographic or temporal resolution. Our aim was to quantify associations between temporal variations ...
DOI:
10.1016/j.scitotenv.2022.158636

8. Generation of hydroxyl radicals via activation of Cr(VI) by UVA-LED for rapid decontamination: The important role of Cr(V)

Author:
Cui Huang; Tao Yang; Mingwei Li; Jiamin Mai; Sisi Wu; Juan Li; Guobiao Ma; Changyu Liu; Jianbo Jia; Jun Ma
Source:
Journal of hazardous materials 2023 v.442 pp. 129913
ISSN:
0304-3894
Subject:
ultraviolet radiation,   etc   ; chromium; decontamination; dyes; electron paramagnetic resonance spectroscopy; irradiation; light emitting diodes; pH; sulfamethoxazole; wastewater; wavelengths;     Show all 11 Subjects
Abstract:
... Hexavalent chromium (Cr(VI)) was activated by ultraviolet-A light-emitting diode (UVA-LED), resulting in efficient removal of various pollutants, including dye, pharmaceuticals, and pesticides, with pseudo-first-order rate constants of 0.0610–0.159 min⁻¹. Comparatively, UVA-LED or Cr(VI) alone barely degraded selected pollutants. Both HO• and Cr(V) were produced in the UVA-LED/Cr(VI) system based ...
DOI:
10.1016/j.jhazmat.2022.129913

9. High temperature induced stable gelatin-gardenia blue system with hyperchromic effect and its food application in 2D writing/printing and 3D printing

Author:
Hongxia Wang; Yang Cheng; Juncheng Zhu; Zhiying Ouyang; Mi Tang; Liang Ma; Yuhao Zhang
Source:
Food chemistry 2023 v.401 pp. 134119
ISSN:
0308-8146
Subject:
ultraviolet radiation,   etc   ; Gardenia; absorbance; amino acids; crosslinking; food chemistry; food industry; gelatin; nanomaterials; particle size; temperature; thermal stability;     Show all 12 Subjects
Abstract:
... Gardenia blue could be effectively stabilized by gelatin and could be further enhanced by high-temperature based covalent-crosslinking reaction. The crosslinking reaction between amino acids and genipin promotes the generation of new gardenia blue molecules, facilitates the stable network structure, and improves the thermal stability of gelatin-gardenia blue systems (T₁ increased to 90 °C and T₂ i ...
DOI:
10.1016/j.foodchem.2022.134119

10. Encapsulation of ascorbyl palmitate in corn starch matrix by extrusion cooking: Release behavior and antioxidant activity

Author:
Oluwaseun Peter Bamidele; Atefeh Amiri-Rigi; Mohammad Naushad Emmambux
Source:
Food chemistry 2023 v.399 pp. 133981
ISSN:
0308-8146
Subject:
ultraviolet radiation,   etc   ; acid treatment; antioxidant activity; antioxidants; corn starch; digestive tract; encapsulation; extrusion; food chemistry; oxidative stability; pH; palmitates; starch;     Show all 13 Subjects
Abstract:
... The main limitation associated with the oral delivery of ascorbyl palmitate, a potent food antioxidant, is its susceptibility to oxidative deterioration. The main objective of the current research was to encapsulate ascorbyl palmitate into corn starch matrix using extrusion cooking and evaluate its release behavior and oxidative stability. Results showed that ascorbyl palmitate was efficiently enc ...
DOI:
10.1016/j.foodchem.2022.133981

11. Active chitosan/gum Arabic-based emulsion films reinforced with thyme oil encapsulating blood orange anthocyanins: Improving multi-functionality

Author:
Runan Zhao; Jin Chen; Songfeng Yu; Ruihao Niu; Zhehao Yang; Han Wang; Huan Cheng; Xingqian Ye; Donghong Liu; Wenjun Wang
Source:
Food hydrocolloids 2023 v.134 pp. 108094
ISSN:
0268-005X
Subject:
ultraviolet radiation,   etc   ; anthocyanins; antioxidants; chitosan; color; emulsions; freshness; hydrocolloids; milk; oranges; pH; shelf life; strength (mechanics); temperature; thermal stability; thyme oil; water vapor;     Show all 17 Subjects
Abstract:
... Novel multifunctional food packaging was developed by incorporating blood orange anthocyanins (BOA) and thyme oil (TO) emulsion into a chitosan-gum Arabic film matrix. The basic properties, pH/volatile acid sensitivity, and functional characteristics of the multifunctional films were investigated. BOA solution illustrated significant color variations (from pink to violet to yellow) under different ...
DOI:
10.1016/j.foodhyd.2022.108094

12. Cross-linked films based on N-hydrophobic-O-hydrophilic chitosan derivatives: Preparation, properties and application in banana storage

Author:
Qun Liu; Bo Li; Yan Li; Xiaodeng Yang; Shoujuan Wang; Congde Qiao; Nianxing Wang
Source:
Food hydrocolloids 2023 v.135 pp. 108113
ISSN:
0268-005X
Subject:
ultraviolet radiation,   etc   ; Escherichia coli; antibacterial properties; biocompatibility; biodegradability; chitosan; contact angle; crosslinking; fruits; glutaraldehyde; hydrocolloids; light transmission; malondialdehyde; microstructure; permeability; thermal stability; transmittance; water vapor; wettability;     Show all 19 Subjects
Abstract:
... Two kinds of N-hydrophobic-O-hydrophilic chitosan derivatives, N-2-hydroxypropyl-3-butyl ether-O-carboxymethyl chitosan (HBCC) and N-2-hydroxypropyl-3-(2-ethylhexyl glycidyl ether)-O-carboxymethyl chitosan (H2ECC) were synthesized and cross-linked with glutaraldehyde to prepare HBCC and H2ECC films. The properties of the cross-linked films, including microstructure, mechanical properties, water va ...
DOI:
10.1016/j.foodhyd.2022.108113

13. The mechanisms of melanogenesis inhibition by glabridin: molecular docking, PKA/MITF and MAPK/MITF pathways

Author:
Chunxing Pan; Xiaoying Liu; Yating Zheng; Zejun Zhang; Yongliang Li; Biao Che; Guangrong Liu; Lanyue Zhang; Changzhi Dong; Haji Akber Aisa; Zhiyun Du; Zhengqiang Yuan
Source:
Food science and human wellness 2023 v.12 no.1 pp. 212-222
ISSN:
2213-4530
Subject:
ultraviolet radiation,   etc   ; food science; health services; hormone receptors; humans; hydrophobicity; hyperpigmentation; inflammation; ingredients; licorice; melanocytes; melanogenesis; melanoma; mice; models; protein synthesis; roughness; therapeutics; transcription (genetics); transcription factors;     Show all 20 Subjects
Abstract:
... Glabridin is the main ingredient of hydrophobic fraction in licorice extract and has been shown to have anti-melanogenesis activity in skins. However, the underlying mechanism(s) remain not completely understood. The aim of this study is thus to elucidate the possible mechanisms related to the melanogenesis suppression by glabridin in cultured B16 murine melanoma cells and in UVA radiation induced ...
DOI:
10.1016/j.fshw.2022.07.011

14. The characteristics of polysaccharide from Gracilaria chouae and its application in food packaging with carboxymethyl cellulose and lysozyme

Author:
Shiyuan Chang; Xinyuan Zou; Biyang Zhu; Lijun You; Zhengang Zhao; Kseniya Hileuskaya
Source:
Food hydrocolloids 2023 v.135 pp. 108109
ISSN:
0268-005X
Subject:
ultraviolet radiation,   etc   ; Fourier transform infrared spectroscopy; Gracilaria; bass; calorimeters; carboxymethylcellulose; color; electron microscopy; galactose; galacturonic acid; glucose; hydrocolloids; lysozyme; macroalgae; microstructure; modulus of elasticity; molecular weight; shelf life; tensile strength; total volatile basic nitrogen; toxicity; viscosity;     Show all 22 Subjects
Abstract:
... In this study, Gracilaria chouae polysaccharide (GCP) was prepared and mixed with carboxymethylcellulose (CMC) and lysozyme to develop a novel active packaging film (named GCLF). The GCP was mainly composed of galactose (55.17%), glucose (21.87%) and galacturonic acid (6.3%), with a high molecular weight (>700 kDa). It also showed pseudoplastic behavior and high apparent viscosity at 3%, presentin ...
DOI:
10.1016/j.foodhyd.2022.108109

15. Synthesis and luminescence properties of new nitridolithosilicate phosphor La₄Ba₃Li₃Si₉N₁₉:Pr³⁺ grown in Li flux

Author:
Rui-Xin Li; Xiao-Ming Wang; Shi-Rui Zhang; Xue Gu; Zu-Pei Yang; Huan Jiao
Source:
Chemical communications 2022 v.58 no.30 pp. 4739-4742
ISSN:
1364-548X
Subject:
ultraviolet radiation,   etc   ; geometry; luminescence;     Show all 3 Subjects
Abstract:
... Flux synthesis is an effective method to discover large crystals of new compounds. In this paper, a solid-state reaction in Li flux produced a new nitridolithosilicate La₄Ba₃Li₃Si₉N₁₉ in the orthorhombic space group Cmcm (No. 63) with lattice parameters of a = 9.7263(1), b = 18.2746(2), c = 11.2929(1) Å, and Z = 4. The La₄Ba₃Li₃Si₉N₁₉ exhibits a 3-D framework based on triangular clusters (3-rings) ...
DOI:
10.1039/d2cc00211f

16. Light-Guided Growth of Gradient Hydrogels with Programmable Geometries and Thermally Responsive Actuations

Author:
Yingying Zhang; Guanglin Fan; Jinqiang Jiang; Zhaotie Liu; Zhongwen Liu; Guo Li
Source:
ACS applied materials & interfaces 2022 v.14 no.25 pp. 29188-29196
ISSN:
1944-8252
Subject:
ultraviolet radiation,   etc   ; hydrogels; photolysis; photoreduction;     Show all 4 Subjects
Abstract:
... Hydrogel actuators have gained considerable interest and experienced significant advancements in recent years. However, the programming of their actuating behaviors is still challenging. Herein, we report the development and regulation of gradient structures of hydrogels for programmable thermally responsive actuating behaviors. The hydrogel actuators are developed by controlling the photoreductio ...
DOI:
10.1021/acsami.2c04679

17. Activation and characterization of environmental catalysts in plasma-catalysis: Status and challenges

Author:
Si Chen; Haiqiang Wang; Fan Dong
Source:
Journal of hazardous materials 2022 v.427 pp. 128150
ISSN:
0304-3894
Subject:
ultraviolet radiation,   etc   ; adsorption; heat; lighting;     Show all 4 Subjects
Abstract:
... Plasma-catalysis has attracted great attentions in environmental/energy-related fields, but the synergetic mechanism still suffers intractable defects. Key issues are that what kind of catalysts are applicable for plasma system, how are they activated in plasma, and how to characterize them in plasma. This review systematically gives a comprehensive summarization of the selection of catalysts and ...
DOI:
10.1016/j.jhazmat.2021.128150

18. Impacts of negatively charged colloidal clay particles on photoisomerization of both anionic and cationic azobenzene molecules

Author:
Emiko Mouri; Kei Kajiwara; Shuhei Kawasaki; Yusuke Shimizu; Hikaru Bando; Hideki Sakai; Teruyuki Nakato
Source:
RSC advances 2022 v.12 no.17 pp. 10855-10861
ISSN:
2046-2069
Subject:
ultraviolet radiation,   etc   ; clay; irradiation; photoisomerization;     Show all 4 Subjects
Abstract:
... Although smectite-type clays are used as heterogeneous media for photofunctional guest molecules, the guest species are limited to cationic or polar molecules because of the intrinsic negative electric charges of clay particles. Nevertheless, in this study, aqueous clay colloids are reported to affect the photoisomerization kinetics of anionic and cationic azobenzene molecules dissolved in the col ...
DOI:
10.1039/d2ra01020h

19. Metal oxide nanoparticle-modified ITO electrode for high-performance solution-processed perovskite photodetectors

Author:
Chao Yan; Yue Wang; Lijie Zhu; Jingzan Jiang; Yufeng Hu; Qiuhong Cui; Zhidong Lou; Yanbing Hou; Feng Teng
Source:
RSC advances 2022 v.12 no.9 pp. 5638-5647
ISSN:
2046-2069
Subject:
ultraviolet radiation,   etc   ; electrodes; electronics; lighting;     Show all 4 Subjects
Abstract:
... Low dark current density plays a key role in determining the overall performance of perovskite photodetectors (PPDs). To achieve this goal, a hole transport layer (HTL) on the ITO side and a hole blocking layer (HBL) on the metal electrode side are commonly introduced in PPDs. Unlike traditional approaches, we realized a high-performance solution-processed broadband PPD using metal oxide (MO) nano ...
DOI:
10.1039/d1ra08764a

20. A vinylogous Norrish reaction as a strategy for light-mediated ring expansion

Author:
Evgueni Gorobets; James W. Papatzimas; Jorge Dourado; Goonay Yousefalizadeh; JinGyu Lee; Duncan K. Brownsey; Kevin Stamplecoskie; Rebecca Davis; Darren J. Derksen
Source:
Chemical communications 2022 v.58 no.17 pp. 2910-2913
ISSN:
1364-548X
Subject:
ultraviolet radiation,   etc   ; Lewis bases; absorption;     Show all 3 Subjects
Abstract:
... The reactions of bicyclic divinyl ketones display wavelength-dependent changes in product formation. UV irradiation results in the formation of competitive [6,3,5] and [7,3,5] tricyclic unsaturated ketones that subsequently undergo ring expansion and reaction with a range of nucleophiles. DFT calculations and transient absorption experiments were completed that are consistent with a vinylogous Typ ...
DOI:
10.1039/d2cc00513a