57743-47-2Relevant academic research and scientific papers
Synthesis and Characterization of 1-Hydroxy-4,5-arene-Fused Tropylium Derivatives
Kodama, Takuya,Kawashima, Yuki,Uchida, Kenta,Deng, Zhirong,Tobisu, Mamoru
, p. 13800 - 13807 (2021/10/01)
The properties of 1-hydroxy-4,5-arene-fused tropyliums were assessed based on experimental and theoretical investigations. An X-ray crystallographic analysis revealed a decrease of bond alternation in the seven-membered ring of 1-hydroxy-4,5-benzotropylium derivatives compared with that of the parent 4,5-benzotropones, which is indicative of an increase in aromaticity upon protonation. NICS and AICD calculations also supported the increased aromaticity of 1-hydroxy-4,5-arene-fused tropylium. The pKa values for a series of 1-hydroxy-4,5-arene-fused tropylium derivatives were also determined.
Synthesis and characterization of phenanthrene-substituted fullerene derivatives as electron acceptors for P3HT-based polymer solar cells
Mi, Dongbo,Park, Jong Baek,Xu, Fei,Kim, Hee Un,Kim, Ji-Hoon,Hwang, Do-Hoon
, p. 1647 - 1653 (2014/07/07)
9,10-Bis(bromomethyl)phenanthrene reacted with fullerenes via a Diels-Alder reaction to give phenanthrene-substituted fullerene mono-adducts (PCMA) and bis-adducts (PCBA) as electron acceptors for organic photovoltaic cells (OPVs). The syntheses of the fullerene derivatives were confirmed by 1H 13C NMR spectroscopy and MALDI-TOF mass spectrometry. PCMA and PCBA showed better light absorption in the UV-visible region than PC61BM. Their electrochemical properties were measured using cyclic voltammetry. Accordingly, the lowest unoccupied molecular orbital (LUMO) energy levels of PCMA and PCBA were -3.66 and -3.57 eV, respectively. Photovoltaic cells were fabricated with a ITO/PEDOT:PSS/poly(3-hexylthiophene)( P3HT):acceptor/LiF/Al configuration, where P3HT and PCBA are the electron donors and acceptors, respectively. The polymer solar cell fabricated using the P3HT:PCBA active layer showed a maximum power conversion efficiency of 0.71%.
Synthesis of linearly and angularly fused indane-based constrained α-amino acid derivatives
Kotha, Sambasivarao,Krishna, Nimita Gopal,Misra, Shilpi,Khedkar, Priti
, p. 2945 - 2950 (2011/10/19)
The benzocyclobutene-based α-amino acid derivative, ethyl 5-acetamido-2,4,5,6-tetrahydro-1H-cyclobuta[f]indene-5-carboxylate is synthesized via coupling of a benzocyclobutene-derived dibromide with ethyl isocyanoacetate as the key step, followed by hydrolysis and subsequent acetylation. This methodology is generalized in order to prepare various linearly and angularly fused indane-based α-amino acid derivatives. Georg Thieme Verlag Stuttgart - New York.
Synthesis of Benzophenanthrocyclooctene
Cheng, Samuel K.T.,Wong, Henry N.C.
, p. 3053 - 3061 (2007/10/02)
A phenanthrene-fused cyclooctatetraene, namely benzophenanthrocyclooctene has been synthesized by employing the "Reich-Paquette" procedure.
Studies on the Chemistry of Isoindoles and Isoindolenines, XXVII. - 2-Alkyl-2H-dibenzisoindoles; Synthesis, Properties, Reactions
Kreher, Richard P.,Hildebrand, Thomas
, p. 81 - 88 (2007/10/02)
The tetracyclic hetarenes 6 are easily accessible via N-oxide route starting with 9,10-bis(bromomethyl)phenanthrene (3) in a three-step procedure.The twofold annelation reduces the diene reactivity of the central 2H-isoindole system.Cycloaddition occurs a
