70207-46-4Relevant academic research and scientific papers
Synthesis and properties of dioxa[3.3](3,6)carbazolophane
Tani, Keita,Tohda, Yasuo,Hisada, Kenji,Yamamoto, Masahide
, p. 145 - 146 (1996)
Dioxa[3.3](3,6)carbazolophane 1 has been synthesized by the cyclization reaction between 3,6-bis(hydroxymethyl)carbazole and corresponding dibromide. The transannular π-π electronic properties of 1 in solution were examined by absorption and emission spectra. The structure of 1 was confirmed by X-ray crystal analysis.
Butterfly-Shaped Thiophene-Pyridine Hybrids: Green Electroluminescence and Large Third-Order Optical Nonlinearities
Chandrasekharan, Keloth,Dalimba, Udaya Kumar,Darshan, Vibhu,Gangadharappa, Sathish Chatnahalli,Kakekochi, Viprabha,Narayanan Unni, K. N.,Nikhil, P. P.
, p. 1762 - 1777 (2020/09/02)
A set of four symmetric, butterfly-shaped 4-(4-(decyloxy)phenyl)-2,6-di(thiophen-2-yl)pyridine (TPY) derivatives 2TPA-TPY (TPY center and triphenylamine end groups), 2CBZ-TPY (TPY center and N-ethyl carbazole end groups), 2TPY-TPA (triphenylamine center and TPY at the periphery) and 2TPY-CBZ (N-ethyl carbazole center and TPY at the periphery) was synthesized. The molecules show reverse saturable absorption (RSA) which is consistent with two-photon absorption (2PA) associated with excited-state absorption (ESA) when excited using a 532 nm laser beam. The molecules 2TPA-TPY and 2TPY-TPA possess extremely low limiting thresholds of 1.73 and 2.68 J cm?2, respectively. An organic light-emitting diode (OLED) fabricated from 2TPA-TPY exhibits green emission with a maximum luminance of 207 cd m?2, a current efficiency (ηCE) of 1.51cd A?1, a maximum power efficiency (ηPmax) of 0.46 lm W?1 and an external quantum efficiency (ηEQE) of 0.48 % at 100 cd m?2.
Synthesis of carbazole-derived ligands and their metal complexes: characterization, thermal, catalytic, and electrochemical features
Bal, Selma,K?ytepe, Süleyman,Connolly, Joseph D.
, p. 2061 - 2071 (2016/11/17)
Abstract: Heading from N-ethylcarbazole, two novel carbazole-derived imine compounds and their copper, cobalt, and nickel complexes have been synthesized. Their open structures have been proposed on the basis of various spectroscopic analyses. All the synthesized compounds have also been examined for their catalytic, thermal, and electronic features. Good or moderate results have been obtained for the catalytic activities of the synthesized complexes. Thermal features showed that the coordination compounds can be used in many organic reactions like oxidation reactions depending on high temperatures. Electronic features of these newly synthesized compounds have also been reported for the first time with this paper. Graphical abstract: [Figure not available: see fulltext.]
Facile synthesis and photo-physical properties of cyano-substituted styryl derivatives based on carbazole/phenothiazine
Lu, Mingzhu,Zhu, Yulan,Ma, Kuirong,Cao, Li,Wang, Kun
scheme or table, p. 128 - 134 (2012/07/27)
Four new cyano-substituted styryl derivatives based on carbazole and phenothiazine were facilely synthesized by conventional Knoevenagel condensation and well characterized. The UV-vis spectra of these dyes showed the lowest-energy absorption bands were mainly caused by the HOMO-LUMO one-electron promotion as conformed by TD-DFT calculations. The thermogravimetric analysis showed these dyes were thermally stable up to 350 °C. The UV-vis absorption and fluorescence emission spectra were also studied in solvents of different polarity, these dyes exhibited unusual large Stokes shift.
The synthesis of trianglimines: On the scope and limitations of the [3 + 3] cyclocondensation reaction between (1R,2R)-diaminocyclohexane and aromatic dicarboxaldehydes
Kuhnert, Nikolai,Rossignolo, Giulia M.,Lopez-Periago, Ana
, p. 1157 - 1170 (2007/10/03)
The synthesis of aromatic dicarboxaldehydes, using dilithiation methodology is described along with their reactivity, in the [3 + 3] cyclocondensation reaction, with (1R,2R)-diaminocyclohexane to give trianglimine macrocycles. The scope and limitations of the cyclocondensation reaction are studied and some comments on the properties of the novel macrocycles are made such as their conformation in solution and temperature dependent dynamic NMR behaviour.
