Flat conjugated polymers combining a relatively low HOMO energy level and band gap: polyselenophenes versus polythiophenes

2012 ◽  
Vol 22 (29) ◽  
pp. 14645 ◽  
Author(s):  
Elena Poverenov ◽  
Yana Sheynin ◽  
Natalia Zamoshchik ◽  
Asit Patra ◽  
Gregory Leitus ◽  
...  
Keyword(s):  
Energy Level ◽  
Conjugated Polymers ◽  
Band Gap ◽  
Homo Energy ◽  
Homo Energy Level

New –(D–A1–D–A2)n– type conjugated polymers for photovoltaic applications: consensus between low band-gap and low HOMO energy level

Tetrahedron ◽  
2013 ◽  
Vol 69 (16) ◽  
pp. 3419-3424 ◽  
Author(s):  
Xiaolian Hu ◽  
Weifei Fu ◽  
Lijian Zuo ◽  
Hangqi Shi ◽  
Meirong Chen ◽  
...  
Keyword(s):  
Energy Level ◽  
Conjugated Polymers ◽  
Band Gap ◽  
Homo Energy ◽  
Low Band Gap ◽  
Photovoltaic Applications ◽  
Homo Energy Level

Ladder-like conjugated polymers used as hole-transporting materials for high-efficiency perovskite solar cells

2019 ◽  
Vol 7 (24) ◽  
pp. 14473-14477 ◽  
Author(s):  
Liren Zhang ◽  
Jionghua Wu ◽  
Dongmei Li ◽  
Wenhua Li ◽  
Qingbo Meng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Conjugated Polymers ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Hole Mobility ◽  
Homo Energy ◽  
Hole Transporting ◽  
Hole Transporting Materials ◽  
Homo Energy Level

Intramolecular S–O interactions were adopted for designing HTMs with high hole mobility and a suitable HOMO energy level in PVSK.

Radical Cation and Neutral Radical of Aza-thia[7]helicene with SOMO–HOMO Energy Level Inversion

2016 ◽  
Vol 138 (23) ◽  
pp. 7298-7304 ◽  
Author(s):  
Ying Wang ◽  
Hui Zhang ◽  
Maren Pink ◽  
Arnon Olankitwanit ◽  
Suchada Rajca ◽  
...  
Keyword(s):  
Energy Level ◽  
Radical Cation ◽  
Homo Energy ◽  
Neutral Radical ◽  
Level Inversion ◽  
Homo Energy Level

Syntheses of PCDTBT containing tetrafluorobenzene as electron-withdrawing group with deep HOMO energy level and applications for photovoltaics

Polymer ◽  
2016 ◽  
Vol 102 ◽  
pp. 84-91 ◽  
Author(s):  
Juae Kim ◽  
Nam Hee Kim ◽  
Seyeong Song ◽  
Song Yi Park ◽  
Sangmin Chae ◽  
...  
Keyword(s):  
Energy Level ◽  
Homo Energy ◽  
Electron Withdrawing Group ◽  
Homo Energy Level

Dendron engineering in self-host blue iridium dendrimers towards low-voltage-driving and power-efficient nondoped electrophosphorescent devices

2017 ◽  
Vol 53 (1) ◽  
pp. 180-183 ◽  
Author(s):  
Yang Wang ◽  
Shumeng Wang ◽  
Junqiao Ding ◽  
Lixiang Wang ◽  
Xiabin Jing ◽  
...  
Keyword(s):  
Energy Level ◽  
Low Voltage ◽  
Hole Injection ◽  
Homo Energy ◽  
Power Efficient ◽  
Homo Energy Level

Low-voltage-driving and power-efficient nondoped electrophosphorescent devices have been realized by increasing the dendron's HOMO energy level to favor effective hole injection and promote exciton formation.

The effect of alkylthio side chains in oligothiophene-based donor materials for organic solar cells

2018 ◽  
Vol 3 (1) ◽  
pp. 131-141 ◽  
Author(s):  
Yan Zou ◽  
Yue Wu ◽  
Hang Yang ◽  
Yingying Dong ◽  
Chaohua Cui ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Solar Cells ◽  
Energy Level ◽  
Small Molecules ◽  
Organic Solar Cells ◽  
Side Chains ◽  
Homo Energy ◽  
Backbone Conformation ◽  
Molecular Backbone ◽  
Homo Energy Level

The engineering of alkylthio side chains in the molecular conjugated backbone of small molecules is in favor of achieving a linear molecular backbone conformation, slightly red-shifting the absorption spectrum, and down-shifting the HOMO energy level of the resulting molecule.

Discotic liquid crystals of transition metal complexes, 55: Novel chlorine-substituted phthalocyanine derivatives showing mesomorphism and low HOMO energy level

2018 ◽  
Vol 22 (01n03) ◽  
pp. 32-45 ◽  
Author(s):  
Masashi Yatabe ◽  
Akio Kajitani ◽  
Mikio Yasutake ◽  
Kazuchika Ohta
Keyword(s):  
Energy Level ◽  
Near Infrared ◽  
Infrared Region ◽  
Optical Microscope ◽  
The Other ◽  
Homo Energy ◽  
Chlorine Atoms ◽  
Other Hand ◽  
Temperature Variable ◽  
Homo Energy Level

We have synthesized a series of novel phthalocyaninato copper(II) (abbreviated as PcCu) compounds, 1,4,8,11,15,18,22,25-octakisalkoxy-2,3,9,10,16,17,23,24-octachloro-phthalocyaninato copper(II) (abbreviated as ([Formula: see text]-C[Formula: see text]O)[Formula: see text]-Cl)[Formula: see text]PcCu (4a–4d): [Formula: see text] 6 (a), 8 (b), 10 (c) and 12 (d)) and, for comparison, another series of PcCu compounds, 1,4,8,11,15,18,22,25-octakisalkoxyphthalocyaninato copper(II) (abbreviated as ([Formula: see text]-C[Formula: see text]O)[Formula: see text]PcCu (1a–1d)). The PcCu derivatives 1a–1d are substituted by alkoxy chains only at the [Formula: see text] positions (1,4,8,11,15,18,22,25). On the other hand, the PcCu derivatives 4a–4d are substituted by alkoxy chains at the [Formula: see text] positions and chlorine atoms at the [Formula: see text] positions (2,3,9,10,16,17,23,24). We have investigated the influence of chlorine atoms substituted at the [Formula: see text] positions of the Pc ring on mesomorphism, spectroscopic and electronic properties for these two series of PcCu derivatives 1 and 4 by using a polarizing optical microscope, DSC, temperature-variable small angle X-ray diffractometer, a UV-Vis spectrophotometer and cyclic voltammetry. Each of the derivatives 1a–1d is crystalline without showing mesomorphism. On the other hand, each of the chlorine-substituted PcCu derivatives 4a–4d shows plural phase transitions, and the longer chain-substituted PcCu derivatives 4c–4d show a rectangular ordered columnar [Col[Formula: see text](P2m)] mesophase. Furthermore, we have revealed that each of the PcCu derivatives 4a–4d shows a Q-band in the near-infrared region and a lower HOMO energy level than conventional phthalocyanine derivatives.

Cyclization of TEMPO Radicals Bound to Metalladithiolene Induced by SOMO–HOMO Energy-Level Conversion

2010 ◽  
Vol 122 (3) ◽  
pp. 539-541 ◽  
Author(s):  
Tetsuro Kusamoto ◽  
Shoko Kume ◽  
Hiroshi Nishihara
Keyword(s):  
Energy Level ◽  
Homo Energy ◽  
Homo Energy Level
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