57103-16-9Relevant academic research and scientific papers
Pure Organic Persistent Room-Temperature Phosphorescence at both Crystalline and Amorphous States
Zhang, Tingting,Wang, Xuan,An, Zhongfu,Fang, Zhiwei,Zhang, Yongming,Yuan, Wang Zhang
, p. 2389 - 2396 (2018)
Persistent room-temperature phosphorescence (p-RTP) of pure organic materials is attracting increasing attention. The design of efficient phosphors and understanding the origin of p-RTP, however, remain challenging. Herein, to gain further insights into p
Designing Efficient and Ultralong Pure Organic Room-Temperature Phosphorescent Materials by Structural Isomerism
Xiong, Yu,Zhao, Zheng,Zhao, Weijun,Ma, Huili,Peng, Qian,He, Zikai,Zhang, Xuepeng,Chen, Yuncong,He, Xuewen,Lam, Jacky W. Y.,Tang, Ben Zhong
, p. 7997 - 8001 (2018)
Pure organic materials with ultralong room-temperature phosphorescence (RTP) are attractive alternatives to inorganic phosphors. However, they generally show inefficient intersystem crossing (ISC) owing to weak spin–orbit coupling (SOC). A design principl
Palladium-catalyzed C-H bond activation for the assembly of: N -aryl carbazoles with aromatic amines as nitrogen sources
Liu, Xiaobing,Sheng, Heyun,Zhou, Yao,Song, Qiuling
supporting information, p. 1665 - 1668 (2020/02/18)
A convenient and efficient palladium-catalyzed C-H bond activation for the assembly of N-aryl carbazole is reported, in which two C-N bonds were formed under one set of conditions. The desired carbazoles were achieved in decent yields with a wide substrate scope by utilizing readily available 2-iodo biphenyls and aromatic amines as starting materials.
Palladium-catalyzed synthesis of N-arylated carbazoles using anilines and cyclic diaryliodonium salts
Riedmueller, Stefan,Nachtsheim, Boris J.
, p. 1202 - 1209 (2013/07/26)
The direct synthesis of N-arylated carbazoles through a palladium-catalyzed amination of cyclic iodonium salts with anilines is described. In particular, electron-poor aniline derivatives reacted smoothly with only 5 mol % of Pd(OAc)2 as catalyst to give the desired products in up to 71% yield. Furthermore, the reactivity of cyclic iodonium salts is compared with the reactivity of the corresponding cyclic bromonium analogues.
Palladium catalysed aryl amination reactions in supercritical carbon dioxide
Smith, Catherine J.,Tsang, Melanie W.S.,Holmes, Andrew B.,Danheiser, Rick L.,Tester, Jefferson W.
, p. 3767 - 3781 (2007/10/03)
Palladium catalysed C-N bond formation in supercritical carbon dioxide has been accomplished. Carbamic acid formation is avoided in part through the use of an N-silylamine as the coupling partner. Employing a catalyst system of Pd 2dba3 (1 mol%) and 2-dicyclohexylphosphino-2′, 4′,6′-triisopropyl-1,1′-biphenyl (X-Phos) (2 mol%) enabled the catalytic amination of aryl bromides and chlorides with N-silylanilines to be realised in excellent yield. Extension of the methodology to the N-arylation of N-silyldiarylamines, N-silylazoles and N-silylsulfonamides is reported. The Royal Society of Chemistry 2005.
Water-soluble receptors for cyclic-AMP and their use for evaluating phosphate-guanidinium interactions
Kato, Yoko,Conn, M. Morgan,Rebek Jr., Julius
, p. 3279 - 3284 (2007/10/02)
A water-soluble receptor for adenosine derivatives was synthesized for the study of molecular recognition in aqueous solution. The modular receptor makes use of hydrophobic interactions, Watson-Crick and Hoogsteen hydrogen-bonding, and a phosphate-guanidinium electrostatic interaction to bind cyclic adenosine monophosphates. Measured binding affinities of 2′,3′-cAMP are-3.65 and -3.26 kcal/mol at 51 and 501 mM ionic strength, respectively (H2O/D2O solution at 10 °C, pH 6.0). The phosphate-guanidinium interaction in this system is estimated to contribute on average 0.6 kcal/mol (51 mM ionic strength) and 0.3 kcal/mol (501 mM ionic strength) to binding. The maximum value of a phosphate-guanidinium electrostatic interaction is estimated to be 2.4 kcal/mol in water.
