50469-71-1Relevant articles and documents
Coordination Polymer Framework Based On-Chip Micro-Supercapacitors with AC Line-Filtering Performance
Yang, Chongqing,Schellhammer, Karl Sebastian,Ortmann, Frank,Sun, Sai,Dong, Renhao,Karakus, Melike,Mics, Zoltán,L?ffler, Markus,Zhang, Fan,Zhuang, Xiaodong,Cánovas, Enrique,Cuniberti, Gianaurelio,Bonn, Mischa,Feng, Xinliang
, p. 3920 - 3924 (2017)
On-chip micro-supercapacitors (MSCs) are important Si-compatible power-source backups for miniaturized electronics. Despite their tremendous advantages, current on-chip MSCs require harsh processing conditions and typically perform like resistors when filtering ripples from alternating current (AC). Herein, we demonstrated a facile layer-by-layer method towards on-chip MSCs based on an azulene-bridged coordination polymer framework (PiCBA). Owing to the good carrier mobility (5×10?3 cm2 V?1 s?1) of PiCBA, the permanent dipole moment of azulene skeleton, and ultralow band gap of PiCBA, the fabricated MSCs delivered high specific capacitances of up to 34.1 F cm?3 at 50 mV s?1 and a high volumetric power density of 1323 W cm?3. Most importantly, such MCSs exhibited AC line-filtering performance (?73° at 120 Hz) with a short resistance–capacitance constant of circa 0.83 ms.
Configuration-dependent optical properties and acid susceptibility of azulene compounds
Tang, Tao,Lin, Tingting,Erden, Fuat,Wang, Fu Ke,He, Chaobin
, p. 5153 - 5160 (2018)
We report the unique optical and protonation characteristics of azulene compounds with different molecular configurations and demonstrate their potential application as acid sensor materials. The unique characteristic of azulene compounds is its large dipole moment. Azulene derivatives with conjugation either along or orthogonal to the dipole direction of azulene were synthesized, and their electronic and optical properties were studied. Our results show that azulene with conjugation orthogonal to the dipole direction exhibits significant change in optical properties upon protonation due to strong intermolecular charge transfer. The low band gap absorption can reach up to mid-IR range, albeit at high acid doping concentration. On the other hand, conjugated azulenes along the dipole direction could be easily protonated even at very low acid concentration (ppm level), which is attributed to the formation of co-planar structures upon protonation and to their high proton affinity. Mechanisms behind the discrepancy between the two configurations are elucidated and further supported by computer simulation. The application of azulene chromophores as a chemical sensor with sensitivity at ppm level was also demonstrated in this work.
Syntheses and properties of linear π-conjugated molecules composed of 1-azaazulene and azulene
Ohtsu, Keito,Hayami, Ryohei,Sagawa, Takuya,Tsukada, Satoru,Yamamoto, Kazuki,Gunji, Takahiro
, (2019/10/14)
Two compounds, 6-(1-azaazulen-2-yl)ethynylazulene (8) and 6-(2-azulenyl)ethynylazulene (10), were synthesized using the Sonogashira-Hagihara cross-coupling reaction followed by decarboxylation with concentrated phosphoric acid. Compounds 8 and 10 were cha
