Functionalization of Metal–Organic Frameworks To Achieve Controllable Wettability
摘要:
The overall versatility of a material can be immensely expanded by the ability to controllably tune its hydrophobicity. Herein we took advantage of steric bias to demonstrate that tricarboxylate metal organic frameworks (MOFs) can undergo covalent post synthetic modification to confer various degrees of hydrophobicity. MOF copper 2-aminobenzeue-1,3,5-tricarboxylate was modified with varying-length aliphatic carbon chains. Unmodified Cu-3(NH2BTC)(2) degrades in minutes upon contact with water, whereas modification as low as 14% results in powders that show significantly enhanced hydrophobic character with contact angles up to 147 degrees. The modified material is capable of withstanding direct contact with water for 30 min with no visual evidence of altered surface characteristics. A linear relationship was observed between the length of the tethered chain and the water contact angle. These results reveal a predictable method for achieving a range of desirable sorption rates and highly controllable hydrophobic character. This work thereby expands the possibilities of rationally modifying MOFs for a plethora of target-specific applications.
[EN] METAL ORGANIC FRAMEWORK (MOF) YELLOW PHOSPHORS AND THEIR APPLICATIONS IN WHITE LIGHT EMITTING DEVICES<br/>[FR] PHOSPHORES JAUNES DE RÉSEAU ORGANO-MÉTALLIQUE (MOF) ET LEURS APPLICATIONS DANS DES DISPOSITIFS ÉMETTANT DE LA LUMIÈRE BLANCHE
申请人:UNIV RUTGERS
公开号:WO2015164784A1
公开(公告)日:2015-10-29
The present application discloses the first rare-earth-free metal organic framework (MOF) yellow phosphors that can be effectively excited by blue light and assembled in a white light emission (WLED) device with a blue chip. The compounds of the present invention exhibit significantly enhanced emission intensity compared to the constituent ligand and high quantum yield and high thermal and moisture stability and photoluminescence. The invention also includes light emitting devices comprising any of these MOF yellow phosphors and methods of preparing these compounds and devices.
Amino substituted Cu3(btc)2: a new metal–organic framework with a versatile functionality
作者:Katharina Peikert、Frank Hoffmann、Michael Fröba
DOI:10.1039/c2cc36220a
日期:——
A new amino substituted tricarboxylate linker and the new metalâorganic framework Cu3(NH2btc)2 have been synthesised. The new MOF shows good adsorption properties and is suitable for postsynthetic modification to form an amide functionalised framework.
phthalocyanine photosensitizer. In addition, this nanosphere is also applied as a drug delivery system to load the chemical drug doxorubicin. Electron microscopy, powder X-ray diffraction and infraredspectometry demonstrated the formation of these multifunctional nanospheres (DOX). Our nanospheres kept the high singlet oxygen quantum yield of zinc phthalocyanine. Additionally, Cell viability experiments
A non-luminescent NH2-MOF-76(Eu) exhibits selective fluorescence recovery for sensing anthrax biomarker DPA through a single-crystal to single-crystal phase transition.
Multifunctional Lanthanide Metal–Organic Frameworks Based on –NH<sub>2</sub> Modified Ligand: Fluorescent Ratio Probe, CrO<sub>4</sub><sup>2–</sup> Ions Adsorption, and Photocatalytic Property
作者:Xueyi Chen、Xun Feng、Zongxin Zhang、Xiangru Deng、Fei Dai、Lilei Zhang、Seik Weng Ng
DOI:10.1021/acs.inorgchem.3c02448
日期:2023.10.2
performance as a fluorescentprobe for detecting Fe3+ and CrO42–/Cr2O72– ions in aqueous solutions, while also serving as a ratiometric fluorescentprobe for the detection of Cr3+, offering rapid response, high sensitivity, selectivity, and recoverability advantages in application. Moreover, 1-Tb exhibits excellent detection capabilities and displays effective adsorption of CrO42– ions, with a maximum