CHINESE JOURNAL OF CHEMICAL PHYSICS
·
2020
·Vol. 33
·期 1
·69-74
·
IF 1.067
Chen Zhuang,Liu Yang-yi,He Xiao-xiao,Chen Jin-quan
As one of the biological endogenous pigments, biliverdin (BV) and its dimethyl
ester (BVE) have extremely weak fluorescence in solution with quantum yield less
than 0.01%. However, the situation reverses with the addition of zinc ions. The
strength for fluorescence of BVE-Zn 2+ complex is greatly enhanced and
fluorescence quantum yield can increase to 5%. Herein, we studied ultrafast
excited state dynamics of BVE-Zn 2+ complex in ethanol, n -propanol, and DMSO solutions in order to reveal the
mechanism of fluorescence quantum yield enhancement. The results show that BVE
can form a stable coordination complex with zinc with 1:1 stoichiometry in
solution. BVE is structurally and energetically more stable in the complex.
Using picosecond time-resolve fluorescence and femtosecond transient absorption
spectroscopy, we show that smaller non-radiative rate constant of
BVE-Zn 2+ complex in DMSO is the key to increasing its
fluorescence quantum yield and the excited state decay mechanism is also
revealed. These results provide valuable information about the fluorescence
property change after BVE binding to metal ions and may provide a guidance for
the study of phytochromes or other fluorescence proteins in which BV/BVE acts as
chromophores.
研究领域:
生物化学
·
光生物学
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DOI
高影响因子
TRANSACTIONS OF TIANJIN UNIVERSITY
·
2026
·
IF 7.8
Yin Chengcheng,Zhao Songfang,Duan Guangbin,Zhao Degang,Wang Jieqiang,Yang Shuhua
Conductive hydrogels are vital components in modern electronics and show great promise for wearable sensors. However, their practical use is often limited by the difficulty of balancing mechanical properties and ionic/electronic conductivity. Herein, a dimethyl sulfoxide (DMSO)–regulated polyvinyl alcohol/guar gum (PVA/GG) dual-network conductive hydrogel (D-PVA/GG) was developed. The pre-shielding of intramolecular hydrogen bonds by DMSO induces extended polymer chain conformations, promoting the formation of a robust network and increasing the availability of hydrated hydroxyl groups. This mechanism significantly enhances both the mechanical performance and ionic conductivity of D-PVA/GG. Consequently, D-PVA/GG achieves a tensile strength of 3.82 MPa and a fracture strain of 815%. This strain is five times that of pure PVA hydrogels. D-PVA/GG also attained a conductivity of 1.66 S/m. These results demonstrate the synergistic optimization of the mechanical strength and conductivity. As a wearable sensor, D-PVA/GG can effectively monitor human motions in real time.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xin Pan,Pei Liu,Hao Wei,Yushan Zhao,Tian Wang,Yejun Zhang,Xinyuan Wang,Xiaofang Hu,Xiaoli Ma,Yi-wei Wang,Sheng Guo,Yuanyuan Wang,Jin-Ao Duan
Starch gels with precisely controlled viscosity show considerable potential as topical carriers for personalized therapeutic applications. However, conventional gelation processes are often inefficient and difficult to regulate, thereby limiting the effective utilization of the favorable properties of starch gels. To address these limitations, an ultrasound-assisted dimethyl sulfoxide (DMSO) solvent method was developed to enable one-step gelation of starch derived from medicinal plant sources. This innovative approach produces gels with a wide viscosity range and can stably encapsulate diverse components, including methotrexate, molybdenum disulfide, and composite molybdenum disulfide. In this study, the properties of the starch gel were comprehensively analyzed, and its gelation mechanism was elucidated using grey prediction modeling and molecular dynamics simulations. The results indicate that the combination of DMSO and water enables rapid starch gel formation, with the process exhibiting a positive correlation with the degree of starch substitution. Furthermore, the gel demonstrated high loading capacity and excellent biocompatibility, making it suitable for applications such as psoriasis treatment and modification of hemodialysis membranes. This method not only expands the techniques available for starch gel preparation but also enhances clinical applications and the development of advanced drug delivery systems.
研究领域:
生物医学工程
·
药学
·
材料科学
·
高分子科学
·
计算生物学
·
皮肤科
·
肾病学
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2020
·
IF 7.864
Xiaobin Zhou,Xiaoling Li,Jianwen Wei,Yinming Fan,Lei Liao,Hongqiang Wang
To address the problems of the relatively high energy penalty and corrosivity of aqueous biphasic solvents, a novel nonaqueous biphasic solvent composed of 2-((2-aminoethyl)amino)ethanol (AEEA), dimethyl sulfoxide (DMSO), and N,N,N′,N″,N″-pentamethyldiethylenetriamine (PMDETA) was proposed for CO2 capture. With optimization, this novel AEEA–DMSO–PMDETA (A–D–P) biphasic solvent could achieve a high CO2 loading of 1.75 mol·mol–1, of which 96.8% of the absorbed CO2 was enriched in the lower phase with only 49.6% of the total volume. 13C NMR analysis and quantum calculations revealed that A–D–P could absorb CO2 to form not only carbamate but also carbamic acid species, which were stabilized by DMSO via hydrogen-bonding interactions. Most products were highly polar and preferred to dissolve in polar DMSO rather than the less polar PMDETA, thus leading to the phase change. The thermodynamics results showed that the heat duty of A–D–P was only 1.66 GJ·ton–1 CO2 (393.15 K), which was significantly lower than that of the benchmark MEA (3.59 GJ·ton–1 CO2) and the reported aqueous biphasic solvents. Moreover, A–D–P presented a noncorrosive behavior to steel after CO2 saturation, clearly showing its superiority over MEA and the aqueous biphasic solvents. Therefore, with superior properties of energy savings and noncorrosiveness, the A–D–P biphasic solvent could be a promising candidate for CO2 capture.
研究领域:
化学工程
·
环境科学
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121868
·
IF 7.5
Chenhong Cheng,Yuanyuan Zhang,Haochuan Yang,Jie Zhang,Linlin Yang,Rubing Dong,Jiayi Cui,Yongli Qin,Xueye Wang,Xingran Zhang,Jinxing Ma,Junjian Zheng
The synthesis of antibiofouling polyvinylidene fluoride (PVDF) membranes has long been a core pursuit of research community. In this study, MXene nanomaterials intercalated by dimethyl sulfoxide (DMSO) were incorporated into the PVDF matrix to fabricate MXene/PVDF composite membranes in the phase inversion process. The characterization results indicated that a DMSO dosage of 40 mL DMSO /g MXene enabled the laminar structure conversion of MXene from multilayer to few-layer, and imparted it with the lowest water contact angle and most negative zeta potential. With a few-layer MXene addition of 1.5 wt%, the resultant composite membrane (FP-1.5) showed a pure water flux of 126.4 L/(m 2 ·h), reaching 2–8 folds of pristine PVDF (PP) membrane and its multilayer rival (MP-1.5), principally due to the optimized membrane morphology as well as increased hydrophilicity and electronegativity. The increased energy barrier of FP-1.5 membrane decreased its biofouling propensity, as verified by the extended Derjaguin–Landau–Verwey–Overbeek (XDLVO) theory. The application potential of FP-1.5 membrane was corroborated by its superior antibiofouling performance during both batch and long-term tests. The fabrication strategy of MXene/PVDF composite membranes is expected to lay the foundation for rational design of high-performance MXene-polymer hybrid membrane for sustainable wastewater treatment.
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高影响因子
Applied Materials Today
·
2023
·
IF 8.3
Wenqi Li,Bin Wang,Siyuan Wang,Peng Wan,Peng Xie,Ding Chen
Although Aramid nanofibers (ANFs) exhibit exceptional mechanical strength, thermal stability, and chemical resistance, their extensive utilization is hindered by protracted preparation processes and inefficient production methods. In this study, we present an efficient mechanochemical approach to rapidly produce ANFs and KOH/DMSO superbase, yielding ANFs at concentrations of 0.2 %, 1.0 %, and 2.0 % within 25, 35, and 50 min, respectively. Furthermore, the analysis of UV–Vis, FTIR, and Raman spectra demonstrated the possible hydrogen-bonding transition mechanisms during the formation of ANFs. Ultimately, the obtained ANFs film (0.2 wt%) and aerogel (1.0 wt%) also demonstrated impressive mechanical properties (tensile strength of 236 MPa, elongation at break of 21 %, and toughness 33.13 MJ/m³) and large specific surface area (204 m²/g), respectively. This study offers an efficient and expeditious method for Kevlar fibers dissociation and introduces a novel approach to preparing highly active KOH/DMSO superbase.
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高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2021
·
IF 3.178
Rongguan Lv,Xuehua Zhang,Rong Xing,Weizhong Shi,Hongkun Zhao,Wanxin Li,Abolghasem Jouyban,William E. Acree
The intermolecular interactions and overall charge distribution of curcumin were respectively investigated by using Hirshfeld surface analysis and molecular electrostatic potential surface. The mole fraction solubility magnitudes of curcumin (I) in aprotic co-solvent blends of DMSO + water, acetone + water and acetonitrile + water ranging from 278.15 to 318.15 (333.15) K under 101.1 kPa was obtained by means of shake-flask method. Under the same conditions, e.g. identical temperature and mass fraction of DMSO (acetone or acetonitrile), the equilibrium solubility of curcumin was greater in DMSO + water blends than in acetone/acetonitrile + water blends. The lowest solubility magnitude was found in neat water at 278.15 K; and the highest one, in acetone/acetonitrile at temperature of T = 318.15 K (aqueous solutions of acetone or acetonitrile) or 333.15 K (aqueous solutions of DMSO). No crystal transition and solvate formation occurred in experimental processes as documented through X-ray power diffraction analysis. The acquired data were correlated by means of the Jouyban-Acree model, Apelblat model and modified van’t Hoff-Jouyban–Acree model. The preferential solvation at 298.15 K was investigated by the approach of inverse Kirkwood–Buff integrals. The parameters of preferential solvation for DMSO, acetone or acetonitrile were positive in the above three blends with middle and DMSO/acetone/acetonitrile-rich composition ranges, which specified that preferential solvation of curcumin was made by co-solvent. The extended Hildebrand solubility approach was further employed to describe the mole fraction solubility at 298.15 K in DMSO/acetone/acetonitrile + water blends studied in the current work and in ethanol/ n -propanol/isopropanol/PG + water blends reported previous by us, obtaining average relative deviations < 5.21%.
研究领域:
药理学
·
化学
·
药物化学
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2025
·
IF 3.7
Pengcheng Hu,Aonan Lai,Shufeng Zhou
The composite membrane of microcrystalline cellulose (MCC) with polyvinyl alcohol (PVA) was effectively synthesized using ionic liquids (ILs) as the solvent and dimethyl sulfone (DMSO) as the co-solvent through the phase conversion method. The effects of IL structure and the IL/DMSO mass ratio on the solubility of MCC were investigated. The findings indicated that the composite solvent functioned as a non-derivative solvent for MCC dissolution. The inclusion of DMSO decreased the viscosity of ILs and enhanced the rate of MCC dissolution. The solubility of MCC reached 14.5% (mass) when the mass ratio of [Bmim]Cl to DMSO was 1:1. The fabricated MCC membrane exhibited a smooth surface and a dense structure. PVA@MCC demonstrated exceptional mechanical properties and a uniform structure at a mass ratio of 2:1, with an elongation at break of 76% and a tensile strength of 14.6 MPa. The effects of antibacterial agents on the morphology, transmittance, mechanical properties, and antibacterial efficiency of PVA@MCC were investigated. The findings revealed that PVA@MCC fortified with clove oil showcased a flat and smooth surface, devoid of stratification or aggregation, and demonstrated superior mechanical properties compared to its counterparts with chitosan and ZnO additions. The elongation at break of PVA@MCC with clove oil increased to 137.6%, while its tensile strength decreased to 10.4 MPa. PVA@MCC with clove oil exhibited an antibacterial efficiency exceeding 68% against Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa, thereby extending the shelf life of cherry tomatoes by an additional four days at ambient temperature.
研究领域:
材料科学
·
生物医学工程
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DOI
高影响因子
IONICS
·
2025
·
IF 2.6
Fan Xingyu,Han Qingshan,Miao Runtian,Li Yueqin
Flexible hydrogel-based Zn-ion batteries (ZIBs) are recognized as a prospective energy storage device benefiting from their high security, low price, and competitive electrochemical performance. However, the bad temperature tolerance is one of the drawbacks that seriously hinder the practical utilization of ZIBs based on conventional hydrogel electrolytes. Herein, we developed a dimethyl sulfoxide (DMSO)-doped polyacrylamide (PAM) electrolyte to effectively enhance the low-temperature tolerance. The as-prepared PAM/DMSO organohydrogel exhibits excellent flexibility with a tensile strength of 32.9 kPa at a fracture strain of 1384%, high ionic conductivity of 77.8 mS/cm, and excellent environmental stability up to − 40 °C. The PAM/DMSO organohydrogel was combined with a Prussian blue analog cathode and zinc anode to form a ZIB battery, which showed excellent electrochemical properties with a high specific capacity of 230.3 mAh/g. Significantly, such a device can maintain good cycling and stable electrochemical performance under sub-zero conditions, proving the excellent anti-freezing property of the organohydrogel electrolyte. Besides, the ZIB could retain great electrochemical performance even at severe deformation. Our study offers an inspiring strategy to create stretchable and anti-freezing hydrogel electrolytes for ZIBs with good low-temperature tolerance.
研究领域:
材料科学
·
能源存储
·
电化学
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Lihua Zhang,Wentao Shi,Junqin Wang,Longming Jin,Gang Hu,Qiang Zheng,Haibo Xie,Peng Chen
Gelation and rheological behaviors of cellulose/CO 2 -based reversible ionic liquid (RIL)/DMSO solutions were investigated. The exponents of specific viscosity η sp versus concentration c were determined for wood pulp (WP) and microcrystalline cellulose (MCC) solutions. The complex viscosity acquired using oscillatory shear closely follows the steady shear viscosity, thus revealing the applicability of Cox-Merz rule. The influence of RIL content in the solvent on apparent viscosities, activation energy, intrinsic viscosities, specific viscosity-c[η] master curve, and relaxation time were also investigated. Gelation occurred in this cellulose solution system due to thermal-induced CO 2 release from the decomposition of the CO 2 -based reversible ionic liquid. The formed gel was stable in air, but re-dissolved when exposed to CO 2 , indicating the switch-on and switch-off effects of CO 2 in cellulose dissolution and gelation.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2018
·
IF 4.521
Xiaoqian Guo,Feng Guo,Yishan Li,Zhangqin Zheng,Zhexu Xing,Zihan Zhu,Ting Liu,Xin Zhang,Ying Jin
Dehydration of D-xylose to yield furfural was carried out using bimetallic salts of a heteropolyacid as the catalyst at 160–220 °C in the DMSO/H 2 O mixtures. The effect of Sn/Cs molar ratio of the bimetallic salts of 12-tungstophosphoric acid (PW) obtained by ultrasound-assisted coprecipitation on dehydration of D-xylose was investigated. The resultant catalysts were characterized by X-ray diffraction, N 2 adsorption, field emission scanning electron microscopy and energy dispersive X-ray (EDX). It was found that the Sn-Cs codoped PW catalysts retained the Keggin crystal structure of PW. Sn 0.625 Cs 0.5 PW was the most active catalyst in the dehydration of D-xylose into furfural. The maximum D-xylose conversion (close to 100 wt %) and furfural yield (63 wt %) were achieved at 200 °C for 3 h in DMSO/H 2 O mixtures. It was found that 16.7 wt % Sn 0.625 Cs 0.5 PW on a chitosan-derived support displayed similar catalytic activity to that of Sn 0.625 Cs 0.5 PW and good stability after recycling six times.
研究领域:
化学工程
·
催化材料
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DOI
高影响因子
CELLULOSE
·
2017
·Vol. 25
·期 1
·205-216
·
IF 3.417
Xu Qinqin,Song Longchu,Zhang Lihua,Hu Gang,Chen Qin,Liu Enhui,Liu Yu,Zheng Qiang,Xie Haibo,Li Nanwen
The reversible reaction of the hydroxyl groups in cellulose with CO 2 in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) results in a rapid and effective derivative dissolution of cellulose in DMSO, by which a series of cellulose acetate propionate (CAP) and cellulose acetate butyrate (CAB) with various degrees of substitution (DS) were synthesized controllably without adding external catalysts. Wherein DBU not only achieves the dissolution of cellulose, but also acts as an efficient organocatalyst for the subsequent cellulose derivatization. The DS of CAB and CAP can be tuned by changing the feed molar ratio of propionic (butyric) anhydride/acetic anhydride and the reaction temperature. The structural and thermal properties of the products were characterized by several analytical techniques including NMR, FT-IR, and TGA. The CO 2 /DBU/DMSO dissolution system provides a new platform for controllable synthesis of mixed cellulose esters with high efficiency under mild conditions.
研究领域:
材料科学
·
有机化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）