CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Peiang Li,Junjie Yang,Yulun He,Mingrui He,Jun Ma
Surface segregation is a practical, cost-effective technique for preparing and modifying ultrafiltration membranes, yet it often involves in the issue of insufficient stability. Due to the similar nature of surface segregation phenomena during membrane preparation and application, the majority of methods that suppress the surface segregation behavior of modifiers during membrane application for better stability also tend to inhibit that during membrane preparation, consequently compromising the initial membrane performance. In response to this issue, we tentatively introduce supramolecular assembly interactions as a means of achieving equilibrium. Specifically, β-cyclodextrin (β-CD) is employed to manipulate the surface segregation behavior of Pluronic F118, a polyethylene glycol based triblock copolymer. First of all, the hydrophily but water-insolubility of β-CD/Pluronic F118 supramolecules effectively curbs the undersegregation and oversegregation phenomenon during membrane preparation and relieves the leaching issue during application. Moreover, the supramolecular assembly of β-CD acts as a nodal role, enhancing hydrogen bonding, hydrophobic interactions, and molecular chain winding among the membrane bulk polymer (polyether sulfone), Pluronic F118, and β-CD. This effect intensifies with closer molecular chain spacing, further boosting the long-term stability of the segregation modifiers. Unlike common hydrophilic modifiers, β-CD does not need to exert its own antifouling property. Instead, it strengthens the surface enrichment and stability of Pluronic F118 through supramolecular assembly. As a result, significant effects can be achieved with minimal amounts of β-CD added. This advancement paves the way for creating highly efficient, durable, and cost-effective ultrafiltration membranes, with potential significant implications for the field of chemical engineering.
研究领域:
化学工程
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材料科学
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DOI
高影响因子
BIOMACROMOLECULES
·
2021
·
IF 6.988
Wenshi Xu,Yong Chen,Bing Zhang,Wenwen Xu,Jie Niu,Yu Liu
Supramolecular assembly loading drug as biomedical materials is a research hotspot. Herein, we reported a supramolecular electrospun assembly constructed via the hydrophobic and hydrogen bonding interaction. The obtained results showed that the assembly by supramolecular electrospinning not only increased the interactions of multiple antibacterial active species including antibiotics, cationic polymers, and silver to form a flexible membrane with good mechanical strength but also indicated the dual effects of rapid doxycycline and polyethyleneimine release as well as a sustained Ag release. Interestingly, the assembly showed not only good degradability but also a high bacteriostatic efficacy toward Escherichia coli (E. coli) up to 99.9%. More importantly, the in vivo wound healing assay indicated that the assembly could promote the healing of uninfected, E. coli-infected, and even methicillin-resistant staphylococcus aureus-infected wounds. The current research provides a novel approach to construct a supramolecular assembly by electrospinning mechanically induced strong noncovalent interaction.
研究领域:
生物材料学
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药剂学
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微生物学
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DOI
PubMed
高影响因子
CHINESE JOURNAL OF CHEMISTRY
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2022
·Vol. 40
·期 9
·1045-1052
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IF 5.56
Kui Wang,Guo-Jie Gao,Xiao-Yan Wang
Comprehensive Summary In this work, a spherical calixpyridinium–IR-820 supramolecular assembled material was fabricated based on the calixpyridinium- induced IR-820 aggregation. This assembled material exhibited a well visible light responsiveness by the photodecomposition of aggregated IR-820 accompanied by an obvious color change. Such photochromic material has many potential applications. More interestingly, the photodecomposition of aggregated IR-820 was significantly promoted, although the aggregated photosensitizers usually exhibited a lower photoreactivity. This approach can be further extended to construct various visible-light responsive supramolecular assembled materials and potentially applied in many fields. Herein, benefitting from the pH-dependent luminescent properties of calixpyridinium and the photodegradation products of IR-820, a pH-controlled visual multicolor luminescence was achieved, which was perfectly applied in the detection of pH from 5 to 10 by naked eyes.
研究领域:
化学
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材料科学
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光学
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DOI
高影响因子
ACS Omega
·
2023
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IF 4.1
Ying Fan,Ran Cen,Peihui Shan,Carl Redshaw,Hang Cong,Xin Xiao,Qingmei Ge
The supramolecular assembly of symmetrical tetramethylcucurbit[6]uril (TMeQ[6]) and 2-picolylamine (AMPy) has been investigated via various techniques, including ultraviolet–visible (UV–vis) and nuclear magnetic resonance spectroscopy, isothermal titration calorimetry (ITC), and X-ray crystallography. The results indicated that TMeQ[6] could encapsulate the AMPy guest molecule to form a stable inclusion complex. The rotational restriction of the guest in the cavity of TMeQ[6] resulted in a large negative value of entropy. The X-ray crystal structure of the 1:1 inclusion complex between TMeQ[6] and AMPy revealed that AMPy exists in the elliptical cavity of TMeQ[6].
研究领域:
化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Advanced Optical Materials
·
2024
·Vol. 12
·期 27
·2401098
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IF 8
Meifeng Jiang,Xinle Lu,Maosheng Chen,Wenyi Tong,Hechun Lin,Chunhua Luo,Hui Peng,Chungang Duan
Crown ether-assisted supramolecular assembly is a robust strategy for manipulating low-dimensional metal halides. In this study, the supramolecular assembly of 0D-Cs 3 Cu 2 I 5 is presented. Upon the addition of 15-crown-5 (15C5) to Cs 3 Cu 2 I 5 , 15C5 immediately coordinates with Cs + to form the cone-shaped [(15C5)Cs] + . Simultaneously, one of the iodine atoms is removed from the [Cu 2 I 5 ] 3- cluster, resulting in the formation of a sub-planar rhombic [Cu 2 I 4 ] 2− unit. This process leads to white emission, specifically [(15C5)Cs] 2 [Cu 2 I 4 ], which exhibits a photoluminescence quantum yield (PLQY) close to unity. The [(15C5)Cs] + further reacts with 15C5 to form the sandwich-type cationic structure [(15C5) 2 Cs] + , accompanied by the generation of red emission [(15C5) 2 Cs] 2 [Cu 2 I 4 ]. By carefully controlling the amount of 15C5, various emission composites can be achieved, particularly tunable white emission. The assembly process is reversible. The pristine Cs 3 Cu 2 I 5 can be recovered after thermal curing because of the volatility of crown ether and the weak Cs-crown ether bond. Theoretical calculations have demonstrated that the coordination of the crown ether primarily affects the energy level, leading to changes in the excited state and photophysical properties. The applications in anticounterfeiting and LED phosphors have been demonstrated. This work provides a new approach for the development of low-dimensional copper halides with promising applications in optoelectronics.
研究领域:
材料科学
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光学
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2021
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IF 9.229
Penghua Qin,Zhen Wu,Pengyu Li,Dian Niu,Minghua Liu,Meizhen Yin
The construction of chiroptical materials with controllable chirality is of special importance in biology and chemistry. Although tunable chirality can be realized in various systems, it remains a fundamental challenge to realize multimodulated chiral inversion. Herein, we report that chiral alanine derivative and fluorescent cyanostilbene derivative co-assemble to prepare supramolecular chiral systems, where twist nanofibers with totally inverted supramolecular chirality and circularly polarized luminescence are obtained through stoichiometric modulation. The supramolecular handedness can be inverted by means of altering the cooling rate and incorporating metal ions. The mechanism study reveals that the synergistic effect among hydrogen bonds, coordination interactions, and π–π stacking interactions contributes to the chirality inversion. This work establishes an effective strategy to precisely modulate supramolecular chirality in multiple ways, which shows great potential in developing smart chiroptical materials capable of achieving complex functionalities.
研究领域:
化学
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材料科学
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生物化学
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DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2017
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IF 2.625
Yan Zhou,Heng-Yi Zhang,Yu Liu
We developed a model dual-light-responsive luminescent lanthanide supramolecular switch. A poly[2]pseudorotaxane was firstly constructed from a dilanthanide metal supramolecular assembly (EuTb· 1 EPO ) and an asymmetric diarylperfluorocyclopentene ( 2 ), in which EuTb· 1 EPO exhibits a satisfactory and tunable lanthanide luminescence, while the 2 moiety in the poly[2]pseudorotaxane displays a reversible photochromic process upon light irradiation with an excellent resistance to fatigue. By switching between closed-form and open-form states of 2 using ultraviolet and visible light irradiation alternately, the lanthanide luminescence of poly[2]pseudorotaxane can be quenched and rapidly recovered, that is, the poly[2]pseudorotaxane can be used as switchable controlling unit.
研究领域:
化学
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材料科学
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产品关联
DOI
高影响因子
ACS Omega
·
2018
·
IF 0
Cuiyun Zhou,Xuenan Feng,Rong Wang,Gengxiang Yang,Tianyu Wang,Jianzhuang Jiang
Demands related to clean energy and environmental protection promote the development of novel supramolecular assemblies for photocatalysis. Because of the distinctive aggregation behaviors, bolaamphiphiles with two hydrophilic end groups could be theoretically the right candidates for the fabrication of high-performance photocatalysis. However, photocatalytic applications based on bolaamphiphilic assemblies were still rarely investigated. Especially, the relationship between diverse assembled nanostructures and the properties for different applications is urgently needed to be studied. Herein, we demonstrate that using the hierarchical assembly of bolaamphiphiles could correctly induce the porphyrin supramolecular architectures with much better photocatalytic performances than the aggregations containing 450 times of the porphyrin molecules, even though both molecular structures as well as the J-aggregations of porphyrin building blocks are same in two different systems. Thus, the co-assembly of l-phenylalanine terminated bolaamphiphile (Bola-F) and the porphyrin containing four hydroxyl groups (tetrakis-5,10,15,20-(4-hydroxyphenyl)porphyrin) can form microtube in methanol and forms fibers/spheres in methanol/water mixture. For catalyzing the photodegradation of rhodamine B, the small amount of J-aggregated porphyrin within Bola-F microtubes show much better photocatalytic performance comparing with that of huge porphyrin J-aggregations in fibers/spheres. The supramolecular assemblies as well as the photocatalysis were thoroughly characterized by different spectroscopies and electron microscopy. It is demonstrated that the co-assembly with bolaamphiphiles could inhibit the energy transfer of porphyrin aggregation and subsequently benefit the electron transfer and corresponding photocatalysis under photo-irradiation. This work is not only useful for further understanding the hierarchically supramolecular assembly but also provides a new strategy for making novel functional supramolecular architectures based on the assembly of bolaamphiphiles and porphyrins.
研究领域:
材料科学
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化学
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环境科学
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产品关联
DOI
PubMed
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Xiaomin Song,Donghan Jia,Shanhu Sun,Xiaoyu Sun,Haobin Zhang,Shiliang Huang,Huiyang Gou,Jie Sun,Jinjiang Xu
Supramolecular assembly has emerged as a promising strategy to drive the development of high-performance energetic materials (HEDMs). In this study, we reported the fabrication of novel HNIW/N 2 host–guest explosives using DAC combined with pressure–temperature (P-T) strategy. The molecular composition and crystal structure were analyzed through Raman spectroscopy, synchrotron radiation XRD and DFT calculations. High-pressure Raman spectroscopy and quantum chemical calculations confirmed the stabilizing effect of nitrogen on structural stability of explosive crystals. Remarkably, HNIW/N 2 exhibited superior detonation performance (D V = 9646 m/s, P = 43.4 GPa), and the formation mechanism of host–guest explosives was illustrated from the perspective of crystal stacking. The newly constructed HNIW/N 2 host–guest explosives realized the green and safe incorporation of nitrogen, as well as enhanced the structural stability and detonation performance for explosive crystals. The study can offer valuable insights into the design of advanced energetic materials and underscore the potential of supramolecular assemblies in this field.
研究领域:
材料科学
·
化学
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DOI
高影响因子
SENSORS
·
2025
·Vol. 25
·期 11
·3470
·
IF 3.5
Xiaonan Geng,Lixin Zhang,Duan Xiong,Zhen Su,Qingqing Guan
The detection of zinc ions plays an essential role in protecting public health and maintaining ecological balance. However, traditional fluorescent probes for Zn2+are limited in their specificity, especially under complex environments, due to their single-mode optical signal and inadequate recognization capacities. Herein we report a dual-mode supramolecular sensing system constructed from a unique three-component assembly involving a terpyridine platinum (II) complex, oxalate, and Zn2+, enabling highly specific detection performance for Zn2+. The supramolecular sensing system exhibits excellent selectivity among various interfering substances, accompanied by ultra-low detection limit (0.199 μM) and fast response (<3 s). The high recognization capacity comes from tri-component-based supramolecular assembly, while the dual-mode response arises from the generation of intermelcular Pt-Pt and π-π interactions, which yields absorption and emission originating from low-energy metal–metal-to-ligand charge transfer (MMLCT) transitions. This work marks a pioneering demonstration for highly specific detection of Zn2+and inspires an alternative strategy for designing cation probes.
研究领域:
分析化学
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超分子化学
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材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2022
·
IF 18.027
Peng Wang,Tan Li,Qiqi Wu,Ruian Du,Qinghua Zhang,Wei-Hsiang Huang,Chi-Liang Chen,Yan Fan,Haonan Chen,Yanyan Jia,Sheng Dai,Yongcai Qiu,Keyou Yan,Yuanyuan Meng,Geoffrey I. N. Waterhouse,Lin Gu,Yun Zhao,Wei-Wei Zhao,Guangxu Chen
In certain metalloenzymes, multimetal centers with appropriate primary/secondary coordination environments allow carbon–carbon coupling reactions to occur efficiently and with high selectivity. This same function is seldom realized in molecular electrocatalysts. Herein we synthesized rod-shaped nanocatalysts with multiple copper centers through the molecular assembly of a triphenylphosphine copper complex (CuPPh). The assembled molecular CuPPh catalyst demonstrated excellent electrochemical CO2 fixation performance in aqueous solution, yielding high-value C2+ hydrocarbons (ethene) and oxygenates (ethanol) as the main products. Using density functional theory (DFT) calculations, in situ X-ray absorption spectroscopy (XAS) and quasi-in situ X-ray photoelectron spectroscopy (XPS), and reaction intermediate capture, we established that the excellent catalytic performance originated from the large number of double copper centers in the rod-shaped assemblies. Cu–Cu distances in the absence of CO2 were as long as 7.9 Å, decreasing substantially after binding CO2 molecules indicating dynamic and cooperative function. The double copper centers were shown to promote carbon–carbon coupling via a CO2 transfer-coupling mechanism involving an oxalate (OOC–COO) intermediate, allowing the efficient production of C2+ products. The assembled CuPPh nanorods showed high activity, excellent stability, and a high Faradaic efficiency (FE) to C2+ products (65.4%), with performance comparable to state-of-the-art copper oxide-based catalysts. To our knowledge, our findings demonstrate that harnessing metalloenzyme-like properties in molecularly assembled catalysts can greatly improve the selectivity of CO2RR, promoting the rational design of improved CO2 reduction catalysts.
研究领域:
化学
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材料科学
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环境科学
✓ 已验证
DOI
高影响因子
Laser & Photonics Reviews
·
2025
·
IF 10
Hui Peng,Wei Tian,Qilin Wei,Linghang Kong,Guang Dai,Jialong Zhao,Bingsuo Zou
Recently, Sb 3+ -activated 0D Zr(IV)-based metal halides have gained enormous attention for their unique optical properties. However, realizing efficient white emission and multiple reversible emissions in a single system remains a great challenge. Parallelly, the currently reported Sb 3+ -activated Zr(IV)-based organic metal halides are mainly through aimless regulation of the type of A-site organic cations, severely limiting their development. Herein, all-inorganic Cs 2 ZrCl 6 :Sb 3+ is employed as the conformational model, three different compounds of Sb 3+ -doped [18-crown-6@A] 2 ZrCl 6 (A = K, Rb, Cs) are developed via supramolecular assembly. All compounds show efficient tunable white emission with luminous efficiency of 91.28% for [18-crown-6@K] 2 ZrCl 6 :Sb 3+ , 84.84% for [18-crown-6@Rb] 2 ZrCl 6 :Sb 3+ , and 78.63% for [18-crown-6@Cs] 2 ZrCl 6 :Sb 3+ , which shall stem from Sb 3+ -induced multi-exciton emission in [SbCl 6 ] 3− octahedron. Particularly, the strong supramolecular interaction can enhance the structural rigidity and suppress nonradiative transitions, which is the dominated reason for [18-crown-6@A] 2 ZrCl 6 :Sb 3+ exhibits efficient emission. The component/excitation/temperature/moisture-dependent multiple reversible PL switching characteristics are observed in Sb 3+ -doped [18-crown-6@A] 2 ZrCl 6 , which allows to demonstrate their applications in advanced optical anti-counterfeiting and information encryption. Moreover, a single-component white light-emitting diode is also fabricated, which shows a high color rendering index of 96.1. Therefore, the work provides a feasible scheme for designing organic Zr(IV) halides with fascinating optical properties.
研究领域:
材料科学
·
光学工程
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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）