Bright blue emissions with temperature-dependent quantum yields from microporous metal–organic frameworks

2012 ◽  
Vol 48 (4) ◽  
pp. 531-533 ◽  
Author(s):  
Qilong Zhu ◽  
Chaojun Shen ◽  
Chunhong Tan ◽  
Tianlu Sheng ◽  
Shengmin Hu ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Quantum Yields ◽  
Temperature Dependent ◽  
Metal Organic ◽  
Bright Blue

Temperature-Dependent Synthesis of Metal-Organic Frameworks Based on a Flexible Tetradentate Ligand with Bidirectional Coordination Donors

2007 ◽  
Vol 129 (15) ◽  
pp. 4520-4521 ◽  
Author(s):  
Yu-Bin Dong ◽  
You-Yun Jiang ◽  
Jie Li ◽  
Jian-Ping Ma ◽  
Feng-Ling Liu ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Tetradentate Ligand ◽  
Temperature Dependent ◽  
Metal Organic

scholarly journals Cinnamal Sensing and Luminescence Color Tuning in a Series of Rare-Earth Metal−Organic Frameworks with Trans-1,4-cyclohexanedicarboxylate

Molecules ◽  
2021 ◽  
Vol 26 (17) ◽  
pp. 5145
Author(s):  
Pavel A. Demakov ◽  
Alena A. Vasileva ◽  
Sergey S. Volynkin ◽  
Alexey A. Ryadun ◽  
Denis G. Samsonenko ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Earth Metal ◽  
Quantum Yields ◽  
Accessible Volume ◽  
Emission Color ◽  
Metal Organic ◽  
Cyclohexanedicarboxylic Acid ◽  
Bright Luminescence ◽  
Luminescence Color ◽  
Tunable Emission

Three isostructural metal–organic frameworks ([Ln2(phen)2(NO3)2(chdc)2]·2DMF (Ln3+ = Y3+ for 1, Eu3+ for 2 or Tb3+ for 3; phen = 1,10-phenanthroline; H2chdc = trans-1,4-cyclohexanedicarboxylic acid) were synthesized and characterized. The compounds are based on a binuclear block {M2(phen)2(NO3)2(OOCR)4} assembled into a two-dime nsional square-grid network containing tetragonal channels with 26% total solvent-accessible volume. Yttrium (1)-, europium (2)- and terbium (3)-based structures emit in the blue, red and green regions, respectively, representing the basic colors of the standard RGB matrix. A doping of Eu3+ and/or Tb3+ centers into the Y3+-based phase led to mixed-metal compositions with tunable emission color and high quantum yields (QY) up to 84%. The bright luminescence of a suspension of microcrystalline 3 in DMF (QY = 78%) is effectively quenched by diluted cinnamaldehyde (cinnamal) solutions at millimolar concentrations, suggesting a convenient and analytically viable sensing method for this important chemical.

Temperature-Dependent Structures of Lanthanide Metal–Organic Frameworks Based on Furan-2,5-Dicarboxylate and Oxalate

2012 ◽  
Vol 12 (6) ◽  
pp. 3263-3270 ◽  
Author(s):  
Hao Wang ◽  
Sui-Jun Liu ◽  
Dan Tian ◽  
Ji-Min Jia ◽  
Tong-Liang Hu
Keyword(s):  
Metal Organic Frameworks ◽  
Temperature Dependent ◽  
Metal Organic ◽  
Lanthanide Metal

Thermo-sensitive luminescence of lanthanide complexes, clusters, coordination polymers and metal–organic frameworks with organic photosensitizers

2019 ◽  
Vol 7 (25) ◽  
pp. 7494-7511 ◽  
Author(s):  
Yasuchika Hasegawa ◽  
Yuichi Kitagawa
Keyword(s):  
Coordination Polymers ◽  
Lanthanide Complexes ◽  
Metal Organic Frameworks ◽  
Temperature Dependent ◽  
Mononuclear Complexes ◽  
Recent Advances ◽  
Metal Organic ◽  
Polynuclear Clusters

Historical and recent advances of lanthanide mononuclear complexes, polynuclear clusters, coordination polymers (CPs) and metal–organic frameworks (MOFs) with temperature-dependent luminescence are reviewed for future thermo-sensitive paints.

scholarly journals Framework disorder and its effect on selective hysteretic sorption of a T-shaped azole-based metal–organic framework

IUCrJ ◽  
2019 ◽  
Vol 6 (1) ◽  
pp. 85-95 ◽  
Author(s):  
Sujuan Wang ◽  
Zhang-Wen Wei ◽  
Jianyong Zhang ◽  
Long Jiang ◽  
Dingxin Liu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Structural Disorder ◽  
Gas Sorption ◽  
Temperature Dependent ◽  
Disordered Structure ◽  
Metal Organic ◽  
First Time ◽  
Organic Framework

Metal–organic frameworks with highly ordered porosity have been studied extensively. In this paper, the effect of framework (pore) disorder on the gas sorption of azole-based isoreticular Cu(II) MOFs with rtl topology and characteristic 1D tubular pore channels is investigated for the first time. In contrast to other isoreticular rtl metal–organic frameworks, the Cu(II) metal–organic framework based on 5-(1H-imidazol-1-yl)isophthalate acid has a crystallographically identifiable disordered framework without open N-donor sites. The framework provides a unique example for investigating the effect of pore disorder on gas sorption that can be systematically evaluated. It exhibits remarkable temperature-dependent hysteretic CO2 sorption up to room temperature, and shows selectivity of CO2 over H2, CH4 and N2 at ambient temperature. The unique property of the framework is its disordered structure featuring distorted 1D tubular channels and DMF-guest-remediated defects. The results imply that structural disorder (defects) may play an important role in the modification of the performance of the material.

Tunable Solid-State Multicolor Emission in Substitutional Solid Solutions of Metal-Organic Frameworks

2019 ◽  
Author(s):  
Wesley Newsome ◽  
Suliman Ayad ◽  
Jesus Cordova ◽  
Eric Reinheimer ◽  
Andres Campiglia ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Solutions ◽  
Hydrolytic Stability ◽  
Metal Organic Frameworks ◽  
Substitutional Solid Solution ◽  
Quantum Yields ◽  
Ambient Conditions ◽  
Excited State Proton Transfer ◽  
Substitutional Solid Solutions ◽  
Metal Organic

Realization of organic-based substitutional solid solutions will facilitate the preparation of solid-state materials with properties that arise from phenomena only displayed by molecules in solution. We demonstrate that multivariate metal-organic frameworks, MOFs, exhibit organic-based substitutional solid solution behavior by tuning their fluorescence, dictated exclusively by predetermined ratios of multivariate organic links. By combining non-fluorescent links with dilute mixtures of red, green, and blue fluorescent links we prepared zirconia-type MOFs that exhibit features of solution-like fluorescence. Our study found that MOFs with fluorophore link concentration of around 1 %mol exhibit fluorescence with decreased inner filtering demonstrated by changes in spectra profiles, quantum yields, and lifetime dynamics expected for excited state proton transfer emitters. Our findings enabled us to prepare organic-based substitutional solid solutions with tunable chromaticity. These materials emit multicolor and white light with high quantum yields, long shelf life, and superb hydrolytic stability at ambient conditions.

Multifunctional luminescence properties of co-doped lanthanide metal organic frameworks

2015 ◽  
Vol 44 (20) ◽  
pp. 9588-9595 ◽  
Author(s):  
Shanghua Xing ◽  
Guang Zeng ◽  
Xiaomin Liu ◽  
Fen Yang ◽  
Zhiqiang Hao ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Luminescent Materials ◽  
Temperature Dependent ◽  
Light Emitting ◽  
Co Doping ◽  
Wide Range ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Co Doped ◽  
Luminescence Behavior

Multifunctional luminescent materials of six Ln-MOFs have been designed and synthesized by the co-doping strategy. Thus a wide range of light emitting spectra and different temperature-dependent luminescence behavior were displayed.

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