133826-41-2Relevant articles and documents
Synthesis of pure blue emissive poly(2,7-carbazole)s anchored by electron donor pendant
Inada, Takashi,Shinnai, Toshinobu,Kijima, Masashi
, p. 2526 - 2534 (2019)
Three novel poly(2,7-carbazole)s having hole injection and transporting pendent moieties of carbazole and triphenylamine at the N-position were synthesized for achieving pure blue electroluminescence. The N-pendants in the polymers correspond to N-phenylcarbazol-2-yl (P1), N,N-diphenylamino-N-phenylcarabazol-2-yl (P2), and 4-phenyl having a hydrocarbon chain with a triphenylamine terminal (P3), respectively. Electronic, optical, and electroluminescence properties of these polymers were compared with those of a poly(2,7-carbazole) directly connected with triphenylamine at the N-position (P0) having an aggregation-induced emissive property. The photoluminescence (PL) spectra suggested that they could emit in the region of blue light in the film state. Especially, P2 that has the fixed and large diphenylaminocarbazolyl pendant showed a deep-blue fluorescence with CIE(x, y) = (0.15, 0.07). The P0, P2, and P3 based light emitting diode devices showed maximum electroluminescence wavelengths in the range of 430–450 nm. The P2 device showed pure blue emission (CIE[x, y] = [0.18, 0.16]), high luminance (1130 cd/m2) and current density (628 mA/cm2) at 8 V, whereas low-energy emissions around 500–600 nm were emerged at higher than 9 V. The P0 and P3 devices also showed a blue electroluminescence in the range of 8–11 V, but their luminance and efficiency were low.
Indolo[3,2-b]carbazole-based thin-film transistors with high mobility and stability
Wu, Yiliang,Li, Yuning,Gardner, Sandra,Ong, Beng S.
, p. 614 - 618 (2005)
Proper functionalization of indolo[3,2-b]carbazole led to a new class of high-performance organic semiconductors suitable for organic thin-film transistor (OTFT) applications. While 5,11-diaryl-substituted indolo[3,2-b]carbazoles without long alkyl side chains provided amorphous thin films upon vacuum deposition, those with sufficiently long alkyl side chains such as 5,11-bis(4-octylphenyl)indolo[3,2-b]carbazole self-organized readily into highly crystalline layered structures under similar conditions. OTFTs using channel semiconductors of this nature exhibited excellent field-effect properties, with mobility up to 0.12 cm2 V-1 s -1 and current on/off ratio to 107. As this class of organic semiconductors has relatively low HOMO levels and large band gaps, they also displayed good environmental stability even with prolonged exposure to amber light, an appealing characteristic for OTFT applications.
Flexible and enantioselective access to jaspine B and biologically active chain-modified analogues thereof
Salma, Yahya,Ballereau, Stephanietlse,Maaliki, Carine,Ladeira, Sonia,Andrieu-Abadie, Nathalie,Genisson, Yves
experimental part, p. 3227 - 3243 (2010/08/21)
Whereas the all-cis tetrahydrofuran framework of the cytotoxic anhydrophytosphingosine jaspine B is considered as a relevant pharmacophore, little is known about the influence of the aliphatic chain of this amphiphilic molecule on its activity. We develop
S1P RECEPTORS MODULATORS AND THEIR USE THEREOF
-
Page/Page column 54, (2010/04/30)
The invention relates to novel compounds that have S1P receptor modulating activity. Further, the invention relates to a pharmaceutical comprising at least one compound of the invention for the treatment of diseases and/or conditions caused by or associated with inappropriate S1P receptor modulating activity or expression, for example, autoimmune response. A further aspect of the invention relates to the use of a pharmaceutical comprising at least one compound of the invention for the manufacture of a medicament for the treatment of diseases and/or conditions caused by or associated with inappropriate S1P receptor modulating activity or expression such as autoimmune response.
