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Innovation and application of dyes with high fixation

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Chinese Journal of Chemical Engineering 2022年第11期51卷 146-152页

作者： shufen zhang Wei Ma Bingtao Tang Bin Shan State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116024China School of Environmental and Municipal Engineering Qingdao University of TechnologyQingdao 266033China

Reactive dyes are the main species for cotton dyeing due to their wide range of hue, satisfactory color fastness and facile application method. Aiming at increasing fixation on cotton fibers, benzimidazolone yellow reactive dyes, sulfonamide red reactive dyes and anthraquinone azo blue reactive dyes are designed. The preparation, characterization and application properties of these dyes with high fixation are introduced in detail. In order to achieve dye fixation to near 100%, macromolecular crosslinking reactive dyes are designed, their dyeing and fixing mechanism are discussed. These novel reactive dyes show promising application prospect in dyeing and printing of cotton fibers.

关键词： Reactive dyes Macromolecular crosslinking dyes Cotton fibers Fixation Dyeing properties

Polysulfide nanoparticles-reduced graphene oxide composite aerogel for efficient solar-driven water purification

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Green Energy & Environment 2023年第1期8卷 267-274页

作者： Fantao Meng Yuang zhang shufen zhang Benzhi Ju Bingtao Tang State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian116023China

Along with the environmental pollution, the scarcity of clean water seriously threatens the sustainable development of human ***, the rapid development of solar evaporators has injected new vitality into the field of water purification. However, the industry faces a considerable challenge of achieving comprehensive purification of ions, especially the efficient removal of mercury ions. In this work, we introduce an ideal mercury-removal platform based on facilely and cost-effectively synthesized polysulfide nanoparticles(PSNs). Further development of PSN-functionalized reduced graphene oxide(PSN-rGO) aerogel evaporator results in achieving a high evaporation rate of 1.55 kg m^(-2)h^(-1)with energy efficiency of 90.8% under 1 sun. With the merits of interconnected porous structure and adsorption ability, the photothermal aerogel presents overall purification of heavy metal ions from wastewater. During solar desalination, salt ions can be rejected with long-term stability. Compared with traditional water purification technologies, this highly efficient solar evaporator provides a new practical method to utilize clean energy for clean water production.

关键词： Composite aerogel Solar vapor generation Photothermal conversion Water purification

Kinetic analysis of experiment data for the formation of *** Blue 9 leuco compound

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Chinese Journal of Chemical Engineering 2017年第10期25卷 1422-1426页

作者： Rongwen Lu Ziang Zhao Xinyu Hao Beibei Shao shufen zhang State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116024 China

A systematic study of the synthesis of *** Blue 9 leuco compound in water is *** kinetic analysis of experimental data for the condensation reaction between 2-formylbenzenesulfonic acid sodium and N-ethyl-N-(3'-sulfonic acid benzyl) aniline obtained at four different temperatures ranging between 85 and 100°C is *** is shown that the reaction followed second-order rate *** overall rate constant(k) increased with the increase of *** the basis of the value of k,activation energy(E_a) of the reaction was ***,it is found that reactant concentration has great effect on the formation of *** Blue 9 leuco compound,implying that it is not enough to improve the conversion of N-ethyl-N-(3'-sulfonic acid benzyl) aniline by only prolonging reaction time in the late period of the reaction.

关键词： Triphenylmethane dyes C.I.Acid blue 9 leuco compound Kinetics Condensation

Ligand assisted copper-catalyzed Ullmann cross coupling reaction of bromaminic acid with amines

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Chinese Journal of Chemical Engineering 2016年第8期24卷 1000-1006页

作者： Beibei Shao Hongying Du Xinyu Hao Rongwen Lu Yi Luo shufen zhang State Key Laboratory of Fine Chemicals Dalian University of Technology

Three types of ligands have been developed for copper-catalyzed Ullmann cross coupling reaction of bromaminic acid with amines in aqueous solution. Ligands with large steric hindrance and strong electron-donating capacity were beneficial to the reaction. UV–Vis and CV analyses demonstrated that these ligands had strong coordination with copper(I), implying the effect of ligand coordination ability on the stability and catalytic activity of catalytic system.

关键词： Bromaminic acid Ullmann cross coupling reaction Ligand Copper catalysis

Salt-free reactive dyeing of betaine-modified cationic cotton fabrics with enhanced dye fixation

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Chinese Journal of Chemical Engineering 2016年第1期24卷 175-179页

作者： Wei Ma Mei Meng Shumin Yan shufen zhang State Key Laboratory of Fine Chemicals Dalian University of Technology

Novel cationic cotton fabrics were prepared by an efficient and simple one-step pad–dry–bake pretreatment process with betaine as cationic reagent. Ester bonds formed between cotton fibers and betaine hydrochloride were proved by Fourier transformed infrared attenuated total reflection(FTIR-ATR) spectra. Moreover, the properties of the cationic fabrics, including X-ray Diffraction(XRD), tensile strength and whiteness and yellowness index,were investigated in comparison with that of the untreated ones. The cationic fabrics were applied in salt-free dyeing of C.I. Reactive Red 195, C.I. Reactive Yellow 145 and C.I. Reactive Blue 19. Different dye fixation processes were applied and compared for untreated and cationic cotton. Dye fixation and color fastness properties of the dyes were tested, and the results presented that dye fixation on the cationic fabrics in the absence of salt was improved with satisfactory light fastness property and applicable wash and rub fastnesses.

关键词： Salt-free dyeing Betaine Cationic cotton Reactive dyes

Cell membrane coated-nanoparticles for cancer immunotherapy

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Acta Pharmaceutica Sinica B 2022年第8期12卷 3233-3254页

作者： Yingping Zeng Sufen Li shufen zhang Li Wang Hong Yuan Fuqiang Hu College of Pharmaceutical Science Zhejiang UniversityHangzhou 310058China

Cancer immunotherapy can effectively inhibit cancer progression by activating the autoimmune system, with low toxicity and high effectiveness. Some of cancer immunotherapy had positive effects on clinical cancer treatment. However, cancer immunotherapy is still restricted by cancer heterogeneity, immune cell disability, tumor immunosuppressive microenvironment and systemic immune toxicity. Cell membrane-coated nanoparticles(CMCNs) inherit abundant source cell-relevant functions, including “self” markers, cross-talking with the immune system, biological targeting, and homing to specific regions. These enable them to possess preferred characteristics, including better biological compatibility, weak immunogenicity, immune escaping, a prolonged circulation, and tumor ***, they are applied to precisely deliver drugs and promote the effect of cancer *** the review, we summarize the latest researches of biomimetic CMCNs for cancer immunotherapy,outline the existing specific cancer immune therapies, explore the unique functions and molecular mechanisms of various cell membrane-coated nanoparticles, and analyze the challenges which CMCNs face in clinical translation.

关键词： Biomimetic Cell membrane-coated nanoparticles Drug delivery “Self”markers Tumor targeting Cancer immunotherapy Cancer vaccines Immune checkpoint blockade inhibitors

Comprehensive analysis of advanced glycation end-products in commonly consumed foods:presenting a database for dietary AGEs and associated exposure assessment

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Food Science and Human Wellness 2024年第4期13卷 1917-1928页

作者： Qiaozhi zhang Huatao Li Ruixing Zheng Lili Cao shufen zhang Shuifeng zhang Huadong Sheng Yuhao Jiang Yanbo Wang Linglin Fu Food Safety Key Laboratory of Zhejiang Province School of Food Science and BiotechnologyZhejiang Gongshang UniversityHangzhou 310018China Ningbo Academy of Product and Food Quality Inspection(Ningbo Fibre Inspection Institute) Ningbo 315048China National Pre-packaged Food Quality Supervision and Inspection Center(Zhejiang) Zhejiang Fangyuan Test Group Co.Ltd.Hangzhou 310018China

Advanced glycation end-products(AGEs)are a group of heterogeneous compounds formed in heatprocessed foods and are proven to be detrimental to human ***,there is no comprehensive database for AGEs in foods that covers the entire range of food categories,which limits the accurate risk assessment of dietary AGEs in human *** this study,we first established an isotope dilution UHPLCQq Q-MS/MS-based method for simultaneous quantification of 10 major AGEs in *** contents of these AGEs were detected in 334 foods covering all main groups consumed in Western and Chinese populations.Nε-Carboxymethyllysine,methylglyoxal-derived hydroimidazolone isomers,and glyoxal-derived hydroimidazolone-1 are predominant AGEs found in most *** amounts of AGEs were high in processed nuts,bakery products,and certain types of cereals and meats(>150 mg/kg),while low in dairy products,vegetables,fruits,and beverages(<40 mg/kg).Assessment of estimated daily intake implied that the contribution of food groups to daily AGE intake varied a lot under different eating patterns,and selection of high-AGE foods leads to up to a 2.7-fold higher intake of AGEs through daily *** presented AGE database allows accurate assessment of dietary exposure to these glycotoxins to explore their physiological impacts on human health.

关键词： Advanced glycation end-products Maillard reaction Processed foods Dietary database Exposure assessment

Application of Tertiary Amine Cationic Polyacrylamide with High Cationic Degree in Salt-free Dyeing of Reactive Dyes

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Chinese Journal of Chemical Engineering 2010年第6期18卷 1023-1028页

作者： TENG Xiaoxu MA Wei zhang shufen State Key Laboratory of Fine Chemicals Dalian University of Technology Dalian 116024 China

Tertiary amine cationic polyacrylamide with high cationization degree was used as a new cationic agent to pretreat cotton with dip-pad-bake method. The obtained cationic cotton was dyed with reactive dyes in the ab-sence of electrolyte. The effects of the characteristics of the cationic agent and the pretreatment conditions on dye-ability of reactive dye were investigated. The results showed that the fixation and K/S values of the reactive dyes on the cationic cotton were improved compared with those on the untreated one in the presence of salt. Tests on fast-ness properties of the dyed cotton and fabric quality of the pretreated cotton were carried out and the results showed that wash and rub fastness of the salt-free dyeing were both satisfactory. And anti-crease property,tensile and tear strength,and handling of the cationic cotton were also good compared with that of the untreated one.

关键词： tertiary amine cationic polyacrylamide reactive dye cotton fabric salt-free dyeing

Visual identification of silver ornament by the structural color based on Mie scattering of ZnO spheres

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Chinese Chemical Letters 2024年第9期35卷 464-468页

作者： Jie Ren Hao Zong Yaqun Han Tianyi Liu shufen zhang Qiang Xu Suli Wu State Key Laboratory of Fine Chemicals Frontier Science Center for Smart MaterialsSchool of Chemical EngineeringDalian University of TechnologyDalian 116024China Instrumental Analysis Center of Dalian University of Technology Dalian 116024China

Structural colors originated from Mie scattering of dielectric spheres can be regulated by the coupling effect between them and *** a rapid visual identification method of silver ornaments was proposed by the coupling effect of Zn O spheres with *** simulation and experimental results proved that,by coupling with different metal substrates,the Mie resonance scattering peaks of ZnO spheres with dimeter of 700 nm showed different degrees of redshift,which lead to different structural color appeared when ZnO spheres deposited on different metal surfaces with a similar appearance.A red structural color was displayed on the surface of the real silver ornament and a yellow-green structural color was shown on the surface of the cupronickel *** method is quite simple and low-cost because it only needs to spray the dispersion of ZnO spheres on the ornament *** to the mild chemical properties of the ZnO,covering and erasing ZnO spheres on the surface of silver would not corrode the silver ***,an atomizer method was used for portable and daily *** work opens new perspectives on the visual identification of silver.

关键词： Visual identification Structural colors Coupling effect ZnO spheres Silver