24083-11-2Relevant academic research and scientific papers
Highly improved performance of ZnII tetraarylporphyrinates in DSSCs by the presence of octyloxy chains in the aryl rings
Orbelli Biroli,Tessore,Vece,Di Carlo,Mussini,Trifiletti,De Marco,Giannuzzi,Manca,Pizzotti
, p. 2954 - 2959 (2015)
Three new β-substituted ZnII-tetraarylporphyrinate dyes (1-3), bearing octyloxy chains at the o,o-, o,p- or o-positions of the four phenyl groups respectively, were synthesized, characterized and investigated as sensitizers for DSSCs. In particular, the alkoxy group position strongly influences their electronic absorption and electrochemical features. Improvements in power conversion efficiency ranging from 40% to 80% were obtained with respect to a reference dye (4) characterized by the presence of sterically bulky t-butyl groups at the m-positions.
Non-conjugated anthracene derivatives and their mechanofluorochromic properties
Liu, Shuai,Liu, Lixia,Liang, Cheng,Peng, Ying,Huang, Shuangping,Li, Xiaotong,Sun, Meng,Wang, Xiaoji
, p. 3923 - 3931 (2018)
A series of non-conjugated methylene–anthracene Schiff base derivatives (DNCAs) were designed and synthesized. Photoluminescence emission spectra indicated that DNCA-4 and DNCA-12 showed obviously mechanofluorochromic properties, and distinctive 26- and 3
Alkoxy substituted D-π-A dimethyl-4-pyrone derivatives: Aggregation induced emission enhancement, mechanochromic and solvatochromic properties
Cao, YuQi,Xi, Ye,Teng, XinYu,Li, Yang,Yan, Xilong,Chen, Ligong
, p. 75 - 83 (2016/10/25)
Three series of D-π-A 2,6-dimethyl-4-pyrone-cored derivatives were designed and synthesized. Evaluation by spectroscopic methods indicated that all the compounds exhibited aggregation-induced emission enhancement (AIEE) effect and solvatochromism. The experimental results revealed that the restriction of intramolecular rotation is the key element for showcasing the AIEE phenomenon. Moreover, all of the compounds presented red-shifted mechanochromic behavior, the extent of the red-shift was mainly dependent on the position and length of alkoxyl group. The PXRD and DSC profiles demonstrated a transformation from crystalline to amorphous state upon grinding. The D-A strategy introduced in this work could facilitate the development and application of ingenious mechanochromic materials.
Direct perfluoroalkylation of non-activated aromatic C-H bonds of phenols
Matsugi, Masato,Hasegawa, Masakazu,Hasebe, Shohei,Takai, Shohei,Suyama, Ryusuke,Wakita, Yusuke,Kudo, Kanako,Imamura, Hiromi,Hayashi, Toshiya,Haga, Seiichi
, p. 4189 - 4191 (2008/09/20)
A simple procedure for the perfluoroalkylation of the aromatic ring of phenols under mildly basic conditions is described. Treatment of a variety of phenols with perfluoroalkyl iodide in the presence of the radical initiator V-70L and Cs2CO3 provided the corresponding perfluoroalkylated products in moderate to good yields. Generally, the reaction proceeded smoothly at room temperature to yield regioselectively perfluoroalkylated products.
