- Extrinsic vs. Intrinsic luminescence and their interplay with spin crossover in 3D Hofmann-type coordination polymers
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The research of new multifunctional materials, as those undergoing spin crossover (SCO) and luminescent properties, is extremely important in the development of further optical and electronic switching devices. As a new step towards this ambitious aim, the coupling of SCO and fluorescence is presented here following two main strategies: whether the fluorescent agent is integrated as a part of the main structure of a 3D SCO coordination polymer {FeII(bpan)[MI(CN)2]2} (bpan = bis(4-pyridyl)anthracene, MI = Ag (FebpanAg), Au (FebpanAu)) or is a guest molecule inserted within the cavities of the 3D switchable framework {FeII(bpb)[MI(CN)2]2}·pyrene (bpb = bis(4-pyridyl)butadiyne, MI = Ag (FebpbAg·Pyr), Au (FebpbAu·Pyr)). The magnetic, calorimetric, structural, UV-Vis absorption and fluorescent characterizations were performed confirming the occurrence of a SCO-fluorescence interplay in the studied compounds. Moreover, the relevance of the intrinsic or extrinsic nature of the luminescence on the efficiency of the interplay is discussed on the basis of the available information.
- Meneses-Sánchez, Manuel,Pi?eiro-López, Lucía,Delgado, Teresa,Bartual-Murgui, Carlos,Mu?oz, M. Carmen,Chakraborty, Pradip,Real, José Antonio
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- Trapping and Releasing of Oxygen in Liquid by Metal–Organic Framework with Light and Heat
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Nanoporous materials can adsorb small molecules into their nanospaces. However, the trapping of light gas molecules dissolved in solvents suffers from low concentration and poor adsorption affinity. Here, the reversible trapping and releasing of dissolved oxygen are shown through integrating photosensitization and chemical capturing abilities into a metal–organic framework (MOF), MOMF-1. 9,10-Di(4-pyridyl)anthracene (dpa) ligands in MOMF-1 generates singlet oxygen from triplet oxygen under photoirradiation without additional photosensitizers, and successively reacts with it to produce anthracene endoperoxide, forming MOMF-2, which is proved crystallographically. The reverse reaction also proceeds quantitatively by heating MOMF-2. Moreover, MOMF-1 exhibits excellent water resistance, and completely removes oxygen of ppm order concentrations in water. The new material shown in this report allows controlling of the amount of dissolved oxygen, which can be applicable in various fields relating to numerous oxidation phenomena.
- Fujimura, Masashi,Kusaka, Shinpei,Masuda, Ayaka,Hori, Akihiro,Hijikata, Yuh,Pirillo, Jenny,Ma, Yunsheng,Matsuda, Ryotaro
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- A Water-Stable Luminescent ZnII Metal-Organic Framework as Chemosensor for High-Efficiency Detection of CrVI-Anions (Cr2O72? and CrO42?) in Aqueous Solution
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A new luminescent ZnII-MOF with 1D triangular channels along the b axis, namely NUM-5, has been successfully assembled and well characterized, which features good stability, especially in aqueous solution. Interestingly, this compound exhibits
- Yao, Zhao-Quan,Li, Guang-Yu,Xu, Jian,Hu, Tong-Liang,Bu, Xian-He
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- Anion-Induced Structural Diversity of Zn and Cd Coordination Polymers Based on Bis-9,10-(pyridine-4-yl)-anthracene, Their Luminescent Properties, and Highly Efficient Sensing of Nitro Derivatives and Herbicides
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Luminescent coordination polymers (CPs) of Zn2+ or Cd2+ and bis-9,10-(pyridine-4-yl)-anthracene (BA) show different 1D and 2D topologies depending on the anion used in the precursor. Compounds {[Zn(μ2-BA)(MeOH)2
- Vasylevskyi, Serhii I.,Bassani, Dario M.,Fromm, Katharina M.
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- Three coordination polymers based on 9,10-di(pyridine-4-yl)anthracene ligand: Syntheses, structures and fluorescent properties
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Three new mixed-ligand divalent coordination polymers (CPs) {[Zn3(L)(1,4-bdc)3]·2DMF}n (1), {[Zn2(L)(2,6-ndc)2]·3DMF}n (2) and {[Cd2(L)3(2,6-ndc)2]}n (3) [L?=?9,10-di(pyridine-4-yl)anthracene, 1,4-H2bdc?=?1,4-benzenedicarboxylic acid, 2,6-H2ndc?=?2,6-naphthalenedicarboxylic acid] have been prepared and well characterized by elemental analyses, infrared spectroscopy, single-crystal X-ray diffraction techniques, powder X-ray diffraction patterns and thermogravimetric analyses. The crystal structure analyses of coordination polymers (CPs) reveal that all the complexes 1–3 have the three-dimensional (3D) coordination networks. The structure of 1 can be simplified as a sqc3 3D 8-connected framework with the point symbol of (424·64). Particularly, in the presence of the linear 2,6-H2ndc auxiliary ligand, a double-deck interpenetrating pcu 3D network of 2 is assembled by 6-connecting framework with the point symbol of (412·63). Complex 3 exhibits a ttd 3D 5-connected net with a point symbol of (46·64). Further, the solid-state luminescent properties of the complexes 1–3 were measured and studied at room temperature.
- Dong, Jun-Liang,Wang, Duo-Zhi,Jia, Yan-Yuan,Wang, Dan-Hong
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- Mixed matrix membranes containing fluorescent coordination polymers for detecting Cr2O72?with high sensitivity, stability and recyclability
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Three coordination polymers (CPs) were synthesized by using CdII, fluorescent 9,10-di(4-pyridyl)anthracene (dpa), and cyclohexane-1,4-dicarboxylic acid (H2cda), and they are [Cd2(dpa)2(cda)Cl2]n(1), [Cd(dpa)2(cda)]n(2) and [Cd(dpa)(cda)(H2O)]n(3). Both1and2are fluorescent and contain nonporous layers.3is an isomer of2and contains a porous diamondoid network. Fluorescent mixed matrix membranes were prepared by dispersing the particles of1or2within the matrix of polymethyl methacrylate, and showed high sensitivity and selectivity for detecting Cr2O72?in water. Both stability and recyclability of the MMMs were remarkably higher than those of the CP powders.
- Dong, Wei,Huang, Wei,Liu, Xing-Gui,Lu, Zhen-Zhong,Meng, Mei-Mei,Wang, Li-Fei,Xi, Ji-Ming,Xu, Yong-Kai,Zhang, Rui,Zheng, He-Gen,Zhu, Rui
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supporting information
p. 7944 - 7948
(2021/06/21)
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- An anthracene extended viologen-incorporated ionic porous organic polymer for efficient aerobic photocatalysis and antibacterial activity
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A new conjugated ionic porous organic polymer (AN-POP), incorporated with anthracene-extended viologen, has been rationally designed and prepared to explore its dual functions in photocatalytic oxidation and bacterial killing. Compared with its anthracene
- Liu, Lu,Qu, Wei-Dong,Dong, Kai-Xun,Qi, Ye,Gong, Wei-Tao,Ning, Gui-Ling,Cui, Jing-Nan
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supporting information
p. 3339 - 3342
(2021/04/07)
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- Quantitative Supramolecular Heterodimerization for Efficient Energy Transfer
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The challenge of quantitatively forming self-assembled heterodimers without other equilibrium by-products is overcome through self-sorting favored by the introduction of designed shape-complementary moieties. Such a supramolecular strategy based on cucurb
- Huang, Zehuan,Scherman, Oren A.,Wu, Guanglu
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supporting information
p. 15963 - 15967
(2020/07/15)
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- Synthesis of Pyridylanthracenes and Their Reversible Reaction with Singlet Oxygen to Endoperoxides
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The ortho, meta, and para isomers of 9,10-dipyridylanthracene 1 have been synthesized and converted into their endoperoxides 1-O2 upon oxidation with singlet oxygen. The kinetics of this reaction can be controlled by the substitution pattern an
- Fudickar, Werner,Linker, Torsten
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p. 9258 - 9262
(2017/09/11)
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- Heteroarylation of anthraquinone-triflate by Suzuki cross-coupling
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The reactivity of the 4-pyridylboronate 5a for PdCl2(dppf)catalysed cross-coupling reaction with an anthraquinone triflate is presented, and compared with its 2-thienyl- and phenylboronic analogues. Best results have been obtained on a small sc
- Coudret, Christophe,Mazenc, Valerie
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p. 5293 - 5296
(2007/10/03)
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