38186-51-5Relevant academic research and scientific papers
A multifunctional luminescent network film electrochemically deposited from a new AIEE emitter for OLEDs and explosive detection
Hao, Hongmin,Luo, Haiyuan,Yi, Aihua,Liu, Cong,Xu, Bingjia,Shi, Guang,Chi, Zhenguo
, p. 281 - 288 (2019)
Electrochemical polymerization (EP) has attracted considerable attention because of its high material utilization, simple process and low cost. In this work, a new AIEE-active blue-emitting molecule, TCzDPAn, was synthesized. The multifunctional luminesce
Synthesis of α-Aryldiazophosphonates via a Diazo Transfer Reaction
Beletskaya, Irina P.,Titanyuk, Igor D.
, p. 2748 - 2757 (2022/03/14)
The simple synthetic procedure for preparation of α-aryl-α-diazophosphonates via a diazo transfer reaction is proposed. Benzylphosphonates reacted with tosyl azide (TsN3) in the presence of potassium tert-butoxide (KOtBu) to afford diazophosphonates in a yield up to 79%. The proposed method is general. The reaction uses easily available starting materials, tolerates various functional groups, and may be applied for multi-gram scale synthesis.
A new insight into the push-pull effect of substituents via the stilbene-like model compounds
Cao, Chaotun,Cao, Chenzhong,Zeng, Zhao
, (2022/02/01)
In this paper, authors report on 1-pyridyl-2-arylethenes, 1-furyl-2-arylethylenes, 1,2-diphenylpropylenes and substituted cinnamyl anilines as stilbene-like model compounds to investigate the factors dominating the push-pull effect of substituents via usi
Nickel-Catalyzed N, N-Diarylation of 8-Aminoquinoline with Large Steric Aryl Bromides and Fluorescence of Products
Yan, Mingpan,Zhu, Longzhi,Zhang, Xingxing,Yin, Shuang-Feng,Kambe, Nobuaki,Qiu, Renhua
supporting information, p. 2514 - 2520 (2021/04/13)
A simple and efficient methodology for the synthesis of large sterically hindered triarylamines in a single step was developed. A direct N,N-diarylation of 8-aminoquinoline with sterically hindered bromides, making use of inexpensive nickel as a catalyst and simple sodium salt as a base, gives the products in good to excellent yields. Various bromides and substituted 8-aminoquinolines are tolerated. Preliminary fluorescence results indicate that these sterically hindered and conjugated triarylamines may have some potential in material chemistry.
Selective esterification of phosphonic acids
Brodzka, Anna,Koszelewski, Dominik,Ostaszewski, Ryszard,Trzepizur, Damian
, (2021/09/27)
Here, we report straightforward and selective synthetic procedures for mono-and diesteri-fication of phosphonic acids. A series of alkoxy group donors were studied and triethyl orthoacetate was found to be the best reagent as well as a solvent for the performed transformations. An important temperature effect on the reaction course was discovered. Depending on the reaction temperature, mono-or diethyl esters of phosphonic acid were obtained exclusively with decent yields. The sub-strate scope of the proposed methodology was verified on aromatic as well as aliphatic phosphonic acids. The designed method can be successfully applied for small-and large-scale experiments without significant loss of selectivity or reaction yield. Several devoted experiments were performed to give insight into the reaction mechanism. At 30?C, monoesters are formed via an intermediate (1,1-diethoxyethyl ester of phosphonic acid). At higher temperatures, similar intermediate forms give diesters or stable and detectable pyrophosphonates which were also consumed to give diesters.31P NMR spectroscopy was used to assign the structure of pyrophosphonate as well as to monitor the reaction course. No need for additional reagents and good accessibility and straightforward purification are the important aspects of the developed protocols.
Selective hydrolysis of phosphorus(v) compounds to form organophosphorus monoacids
Ash, Jeffrey,Cordero, Paula,Huang, Hai,Kang, Jun Yong
, p. 6007 - 6014 (2021/07/21)
An azide and transition metal-free method for the synthesis of elusive phosphonic, phosphinic, and phosphoric monoacids has been developed. Inert pentavalent P(v)-compounds (phosphonate, phosphinate, and phosphate) are activated by triflate anhydride (Tf2O)/pyridine system to form a highly reactive phosphoryl pyridinium intermediate that undergoes nucleophilic substitution with H2O to selectively deprotect one alkoxy group and form organophosphorus monoacids.
Determination and application of the excited-state substituent constants of pyridyl and substituted phenyl groups
Cao, Chao-Tun,Yan, Lu,Cao, Chenzhong
, (2021/05/21)
Thirty six 1-pyridyl-2-arylethenes XCH=CHArY (abbreviated XAEY) were synthesized, in which, X is 2-pyridyl, 3-pyridyl and 4-pyridyl and Y is OMe, Me, H, Br, Cl, F, CF3, and CN. Their ultraviolet absorption spectra were measured in anhydrous ethanol, and their wavelengths of absorption maximum λmax were recorded. Also, the 234 λmax values of 1-substituted phenyl-2-arylethylene compounds (XAEY, where X is substituted phenyl) were collected. The excited-state substituent constants (Formula presented.) of three pyridyl groups and 23 substituted phenyl groups (total of 26) were obtained by means of curve-fitting method. Taking the λmax values of 358 samples of bi-arylethene derivatives as a data set and 126 samples of bi-aryl Schiff bases (including nine compounds synthesized by this work) as another data set, quantitative correlation analyses were performed by employing the obtained (Formula presented.) as a parameter, and good results were obtained for the two data sets. The reliability of the obtained (Formula presented.) values was verified. The results of this paper can provide excited-state substituent constants for the study and application of optical properties of conjugated organic compounds containing aryl groups.
Aggregation-induced light-emitting compound and preparation method and application thereof
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Paragraph 0049-0050; 0053-0054; 0069, (2020/05/05)
The invention discloses an aggregation-induced light-emitting compound as well as a preparation method and application thereof. The compound is a carbazole derivative of spirobifluorene and is formedby connecting a triphenylethylene derivative and a spiro
Effects of incorporating regioisomers and flexible rotors to direct aggregation induced emission to achieve stimuli-responsive luminogens, security inks and chemical warfare agent sensors
Adil, Laxmi Raman,Iyer, Parameswar Krishnan
supporting information, p. 7633 - 7636 (2020/07/21)
Efficient transformation of ACQ materials to AIE luminogens using simple design principles of positional isomerization and C-C bond exclusion is presented here. Consequently, the bond link, position and packing influence the photophysical properties that can be utilized in erasable secret inks, pressure sensors and chemical warfare sensors.
Novel phenanthrene compounds, a method of making the same and organic electronic devices using the same
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Page/Page column 21; 22; 29; 30; 31; 35; 37, (2019/10/22)
The present invention relates to novel phenanthrene compounds having excellent luminous efficiency and lifespan, a manufacturing method thereof, and an organic electronic device including the novel phenanthrene compounds. The novel phenanthrene compounds according to the present invention can form steric conformation, can improve performance through improvement of electronic density, also can improve performance by regulating the molecular weight and position of a functional group because the molecular weight of the compounds is low, and can minutely regulate luminous wavelength and improve performance according to types of the functional groups. As the result, the organic electronic device including the novel phenanthrene compounds has high brightness, excellent thermal resistance, long lifespan, and high efficiency.
