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Duan H, Cheng Z, Xue Y, Zhao J, Yang M, Cui Z, Gao W, Wang S. Influences of nano-effect on the thermodynamic properties of solid–liquid interfaces: theoretical and experimental researches. CrystEngComm 2021. [DOI: 10.1039/d1ce00906k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Nano-effect has a significant influence on the interfacial properties of nanoparticles. When r < 10 nm, the relationships between the interfacial thermodynamic properties and the reciprocal of radius deviate from linear behavior.
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Affiliation(s)
- Huijuan Duan
- Basic Department, Shanxi Agricultural University, Taigu 030801, China
| | - Zuohui Cheng
- Basic Department, Shanxi Agricultural University, Taigu 030801, China
| | - Yongqiang Xue
- Department of Chemistry, Taiyuan University of Technology, Taiyuan 030024, China
| | - Jinzhong Zhao
- Basic Department, Shanxi Agricultural University, Taigu 030801, China
| | - Meihong Yang
- Basic Department, Shanxi Agricultural University, Taigu 030801, China
| | - Zixiang Cui
- Department of Chemistry, Taiyuan University of Technology, Taiyuan 030024, China
| | - Wenmei Gao
- Basic Department, Shanxi Agricultural University, Taigu 030801, China
| | - Shiyao Wang
- Basic Department, Shanxi Agricultural University, Taigu 030801, China
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Hu FL, Qin Z, Wang MF, Kang XW, Qin YL, Wang Y, Chen SL, Young DJ, Mi Y. Modulating the regioselectivity of solid-state photodimerization in coordination polymer crystals. Dalton Trans 2020; 49:10858-10865. [PMID: 32716469 DOI: 10.1039/d0dt02038a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Coordination polymers [Cd(1,4-bpeb)(L1)] (1), [Zn2(1,4-bpeb)2(L2)2(SO42-)2] (2) and [Cd(1,4-bpeb)(L3)] (H2O) (3) (H2L1, 3-[2-(3-hydroxy-phenoxymethyl)-benzyloxy]-benzoic acid; HL2, 1H-Indazole-3-carboxylic acid; H3L3, benzene-1,2,3-tricarboxylic acid; 1,4-bpeb, 1,4-bis[2-(4-pyridyl)vinyl]benzene have been synthesized under solvothermal conditions. Complexes 1-3 underwent photodimerization in the solid-state to give quantitative yields of single isomeric products. The choice of carboxyl ligands L and metal center determined the arrangement of 1,4-bpeb ligands, which in turn directed the regiochemistry of the final photoproducts. The solid-state network structures of cadmium based 1 and 3 had 1,4-bpeb pairs aligned face-to-face with both C[double bond, length as m-dash]C centres in each ligand at an appropriate distance and alignment for photodimerization to give the corresponding para-[2.2]cyclophane (pCP) exclusively. By contrast, compound 2 possessed dinuclear (ZnSO4)2 metallocycles that positioned the 1,4-bpeb "arms" face-to-face, but with C[double bond, length as m-dash]C centres offset at an appropriate distance for only one pair to undergo [2 + 2] cycloaddition to yield a single stereoisomer of the monocyclobutane photo-product bpbpvpcb. This work highlights crystal engineering design principles that can be used to facilitate regio- and stereospecificity in solid-state transformations.
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Affiliation(s)
- Fei-Long Hu
- Guangxi Key laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning, 530006, P.R. China. and Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, P.R. China
| | - Zhen Qin
- Guangxi Key laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning, 530006, P.R. China.
| | - Meng-Fan Wang
- Guangxi Key laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning, 530006, P.R. China.
| | - Xue Wan Kang
- Guangxi Key laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning, 530006, P.R. China.
| | - Yong-Li Qin
- Guangxi Key laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning, 530006, P.R. China.
| | - Yong Wang
- Guangxi Key laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning, 530006, P.R. China.
| | - Shu-Li Chen
- Guangxi Key laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning, 530006, P.R. China.
| | - David James Young
- College of Engineering, IT and Environment, Charles Darwin University, Darwin, NT 0909, Australia
| | - Yan Mi
- Guangxi Key laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning, 530006, P.R. China.
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Ploetz E, Zimpel A, Cauda V, Bauer D, Lamb DC, Haisch C, Zahler S, Vollmar AM, Wuttke S, Engelke H. Metal-Organic Framework Nanoparticles Induce Pyroptosis in Cells Controlled by the Extracellular pH. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1907267. [PMID: 32182391 DOI: 10.1002/adfm.201909062] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 03/01/2020] [Accepted: 03/02/2020] [Indexed: 05/23/2023]
Abstract
Ion homeostasis is essential for cellular survival, and elevated concentrations of specific ions are used to start distinct forms of programmed cell death. However, investigating the influence of certain ions on cells in a controlled way has been hampered due to the tight regulation of ion import by cells. Here, it is shown that lipid-coated iron-based metal-organic framework nanoparticles are able to deliver and release high amounts of iron ions into cells. While high concentrations of iron often trigger ferroptosis, here, the released iron induces pyroptosis, a form of cell death involving the immune system. The iron release occurs only in slightly acidic extracellular environments restricting cell death to cells in acidic microenvironments and allowing for external control. The release mechanism is based on endocytosis facilitated by the lipid-coating followed by degradation of the nanoparticle in the lysosome via cysteine-mediated reduction, which is enhanced in slightly acidic extracellular environment. Thus, a new functionality of hybrid nanoparticles is demonstrated, which uses their nanoarchitecture to facilitate controlled ion delivery into cells. Based on the selectivity for acidic microenvironments, the described nanoparticles may also be used for immunotherapy: the nanoparticles may directly affect the primary tumor and the induced pyroptosis activates the immune system.
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Affiliation(s)
- Evelyn Ploetz
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, Munich, 81377, Germany
- Nanosystems Initiative Munich (NIM), LMU Munich, Munich, 81377, Germany
- Center for Integrated Protein Science Munich (CiPSM), LMU Munich, Munich, 81377, Germany
| | - Andreas Zimpel
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, Munich, 81377, Germany
| | - Valentina Cauda
- Department of Applied Science and Technology, Politecnico di Torino, Torino, 10129, Italy
| | - David Bauer
- Department of Chemistry, TU Munich, Munich, 81377, Germany
| | - Don C Lamb
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, Munich, 81377, Germany
- Nanosystems Initiative Munich (NIM), LMU Munich, Munich, 81377, Germany
- Center for Integrated Protein Science Munich (CiPSM), LMU Munich, Munich, 81377, Germany
| | | | - Stefan Zahler
- Department of Pharmacy, LMU Munich, Munich, 81377, Germany
| | | | - Stefan Wuttke
- BCMaterials, Basque Center for Materials, UPV/EHU Science Park, Leioa, 48940, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, 48013, Spain
| | - Hanna Engelke
- Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, Munich, 81377, Germany
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