1449686-76-3

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• 111-83-1 1-bromo-octane 
• 106-41-2 4-bromo-phenol 
• 3096-56-8 2-bromofluoren-9-one 
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• 1449686-79-6 9',9''''-([2,2'-bithiophene]-5,5'-diyl)bis(9,9',9''-tris(4-(octyloxy)phenyl)-[2,2':7',2''-terfluorene]-9,9''-diol) 
• 1449686-77-4 9-(4-(octyloxy)phenyl)-2-(4,4,5,5,-teramethyl-1,3,2-dioxaborolan-2-yl)-9H-fluoren-9-ol 

Relevant academic research and scientific papers

Iodide ion receptors: shape-persistent macrocycles ofsyn/anticonfigurations

This article reports a pair of rigid iodide ion macrocyclic receptors ofsyn/anticonfigurations. Single crystal X-ray analysis confirms the structure of thesyn-isomers, and1H Nuclear Magnetic Resonance (1H NMR) titration and ultraviolet-visible (UV-Vis) absorption are used to study the binding affinity of the isomers to halogen ions. Both the isomers show colorimetric and fluorescence recognition towards iodide anions in dichloromethane solution. By solving the association constants, it can be concluded that the interaction between theanti-isomer and iodide ions is relatively weaker than that in thesyn-isomer, and thesyn-isomer has much better recognition selectivity for I?in CH2Cl2than theanti-isomer. The results of the theoretical calculations show thatsyn/anticonfigurations bring about different orientations of the alkyl chains, leading to the larger steric hindrance of theanti-isomer to hinder the combination with iodide ions, and thesynconfigurations with relatively smaller steric hindrance can enhance the binding between the isomers and the iodide anions. A shape persistent macrocycle with a bound conformation can be looked at as a special case of conformational selection, and the results of this study indicate a local induced fit mechanism following a conformational selection in the recognition of iodide anions, and we anticipate that this work will help to understand these two dominant binding mechanisms in molecular recognition and have a certain reference value for designing better anion receptors.

A-D-A type nano-corner lattice with thermal activation delayed fluorescence properties and preparation method and application thereof

The invention discloses an A-D-A type nano-corner lattice with thermal activation delayed fluorescence properties and a preparation method and the application of the A-D-A type nano-corner lattice with the thermal activation delayed fluorescence properties. The nano-corner lattice is based on fluorene or diazafluorene and has a rigid geometric structure. A-D-A type nano-corner lattice molecules exhibit cyclic characteristics and unique and excellent TADF characteristics; the A-D-A type nano-corner lattice is cheap in raw materials, easy in preparation, mild in reaction conditions and unique inperformances and high in thermal and electrochemical stability and spectral stability; the materials are novel in structure and excellent in performances and can be synthesized by an aromatic nucleophilic substitution reaction, the synthesis method is simple and the yield is high; an organic electroluminescent device can be prepared by a solution processing method and taken as a light-emitting layer material, so that the A-D-A type nano-corner lattice has the advantages of high luminous efficiency, low efficiency roll-off and capability of effectively reducing the turn-on voltage and the like. The A-D-A type nano-corner lattice disclosed by the invention is expected to become a new generation of new practical organic molecular optoelectronic materials, and has a very good application prospect in the fields of the organic electroluminescent device and the like.

Donor-acceptor type fluorenyl nanometer grid material, preparation method and application thereof

The invention discloses a donor-acceptor type fluorenyl nanometer grid material, a preparation method and application thereof. The nanometer grid material is of a square-ring-shaped rigid structure formed through alternative arrangement of fluorenyl ramification regarded as electron donor units and electron acceptor units. The preparation method comprises the following steps that a precursor with tertiary alcohol and aromatic nucleus terminal based hydrogen inhibitor dual binding sites is dissolved in organic solvent; at the room temperature, a catalyst is added, and stirring and reacting are conducted; and the reaction is conducted for 5 min-12 h, and products are obtained through chromatogram column separation. The donor-acceptor type fluorenyl nanometer grid material has the advantages that the compounding method is modularized, extensibility and stability of thermology, electrochemistry and photology are high; dependency of thin film solvent is reduced; large-area soluble processing is achieved; the size of apertures is accurately regulated and controlled; and accurate regulation an control of band gaps and energy level arrangement are achieved. The donor-acceptor type fluorenyl nanometer grid material has potential application prospects in the fields of photoelectric function materials of organic solar cells, storage and memory resistor, sensing, detecting and the like.