DERIVATIVE OF NOVEL POLYHYDROXY AROMATIC COMPOUND AND USE THEREOF
申请人:RNS CO.,LTD.
公开号:US20150283051A1
公开(公告)日:2015-10-08
Provided is a skin whitening composition with excellent whitening effects, specifically, a derivative or a polyhydroxy cyclic compound represented by Formula I or a pharmacologically acceptable salt thereof, comprising;
wherein
is derived from an aromatic cyclic compound, C
n
, C
n+1
and C
n+2
are three neighboring carbon atoms present in the aromatic cyclic compound, wherein n is a positive integer, R
1
and R
2
are each a saturated or unsaturated straight or branched alkyl or acyl group having 3 to 12 carbon atoms, and R
3
, R
4
, R
5
and R
6
are each independently at least one substituent selected from hydrogen, alkyl, alkoxy, acyloxy, acyloxymethyl, oxo, hydroxy, vinyl, nitrile, carboxaldehyde, carbonitrile and aldehyde.
Synthesis and properties of fully conjugated macrocycles composed of m -diethynylene-phenylene-bridged two dibenzofuran, dibenzothiophene and carbazole units
Fullyconjugated macrocycles 1a−1c composed of m-diethynylene-phenylene-bridged two dibenzofuran, dibenzothiophene and carbazole units were synthesized via Sonogashira cross coupling reactions under high-diluted condition. These conjugated macrocycles were fully characterized by 1H NMR, 13C NMR, FT-IR, Mass spectroscopies and elemental analysis. Photophysical and redox properties of 1a−1c were investigated
完全共轭的大环化合物1A - 1C组成的米-diethynylene亚苯基桥连的2二苯并呋喃,二苯并噻吩和咔唑单元被通过高稀释条件下的Sonogashira交叉偶联反应来合成。这些共轭的大环化合物通过1 H NMR,13 C NMR,FT-IR,质谱和元素分析进行了全面表征。分别通过紫外可见/荧光光谱和循环伏安法研究了1a - 1c的光物理性质和氧化还原性质,并将这些特征与相应的线性苯基乙炔基二苯并杂酚11a - 11c进行了比较。。此外,在理论上以B3LYP / cc-pVDZ // B3LYP / 6-31G(d)的水平通过理论计算研究了它们的结构和电子见解。
Efficient dye-sensitized solar cell based on a new porphyrin complex as an inorganic photosensitizer
work, the synthesis of a new Zn-porphyrin complex, that has a good spectral and electrochemical characteristic, is reported. Then, this complex is used as a dye in dye-sensitized solarcells, using titanium dioxide as a semiconductor. The application of this complex in a dye-sensitized nanocrystalline TiO2 solarcell has indicated a short circuit density of 11.60 mA, an open circuit potential of 0.65
The effect of different alkyl chains on the photovoltaic performance of D–π–A porphyrin-sensitized solar cells
作者:Jiangzhao Chen、Songguk Ko、Linfeng Liu、Yusong Sheng、Hongwei Han、Xiong Li
DOI:10.1039/c4nj02263g
日期:——
Compared to the DSSCs based on WH-C1 and YD20 with short alkyl chains, the device sensitized by WH-C2 with the hexyloxy group shows a significantly enhanced Voc, Jsc and power conversion efficiency (η).
The effect of porphyrins suspended with different electronegative moieties on the photovoltaic performance of monolithic porphyrin-sensitized solar cells with carbon counter electrodes
作者:Jiangzhao Chen、Songguk Ko、Linfeng Liu、Yusong Sheng、Hongwei Han、Xiong Li
DOI:10.1039/c4nj02186j
日期:——
Compared with WH-C3 and WH-C4, the WH-C5-sensitized device shows a significantly enhanced Voc, Jsc and power conversion efficiency (η).