Synthesis and Polymerisation of Novel Methacrylates with Carbazolyl and Benzofuranyl Pendant Groups for Photovoltaic Applications
摘要:
This article reports properties of photovoltaic devices containing new donor materials - copolymers referred as PCEMB, composed of 2-(carbazol-9-yl)ethyl methacrylate (CEM) and benzofuran-2-carboxylic acid 2-(2-methylacryloyloxy)ethyl ester (MB). Manufactured photovoltaic cells consisted of donor and acceptor (PBT or P3OT) layers sandwiched between ITO covered glass and evaporated aluminum electrode. Performance of the cell was optimized for a copolymer composed of 8% CEM and 92% MB. The efficiency, found equal c.a. eta = 0,03%, was low comparing to other photovoltaic cells reported in the literature. However, following the observed tendencies, it can be supposed that there exists a large reserve for the enhancement of the open circuit voltage through further chemical modifications of the chromophore.In the case of the PDT containing cells, measured Uoc was substantially lower. This fact may be attributed to difference in carrier mobility between this polymer and PCEMB. Simultaneously, the larger sizes of the MB molecule may favor separation of the charges and leads to enhancement of the corresponding voltage.
Preparation of Cyan Dyes from 6-Diethylaminobenzo[b]furan-2-carboxaldehyde
摘要:
6-Diethylaminobenzo[b]furan-2-carboxaldehyde was synthesized in four steps and 48% overall yield starting from 4-diethylaminosalicylaldehyde. Five cyan dyes were made from this aldehyde using malononitrile dimer and 2-dicyanomethylene-3-cyano-4,5,5-trimethyl-2,5-dihydrofuran. The crystal structures of two dyes are included.
Synthesis of a novel class of substituted benzothiophene or benzofuran derivatives as BMP-2 up-regulators and evaluation of the BMP-2-up-regulating effects in vitro and the effects on glucocorticoid-induced osteoporosis in rats
作者:Si-tu Xue、Hui-fang Guo、Mei-jie Liu、Jie Jin、Da-hong Ju、Zong-ying Liu、Zhuo-rong Li
DOI:10.1016/j.ejmech.2015.04.016
日期:2015.5
therapeutic agents for the treatment of low bone mass. To enrich our understanding of SAR and based on our previously concluded structure–effect relationship, 23 derivatives were prepared in this work. The synthesis, up-regulating activities on BMP-2 expression, and bone loss prevention efficacies of these compounds in rats with glucocorticoid-induced osteoporosis are presented. The bone histology of
Microwave-Assisted Preparation of Benzo[b]furans under Solventless Phase-Transfer Catalytic Conditions
作者:Dariusz Bogdal、Marek Warzala
DOI:10.1016/s0040-4020(00)00818-8
日期:2000.10
salicylaldehyde and its derivatives with various esters of chloroacetic acids in the presence of tetrabutylammonium bromide (TBAB) leads to the synthesis of benzo[b]furans by a solventless phase-transfer catalytic (PTC) reaction under microwave irradiation.
A benzofuran compound of the formula ##SPC1## Where X.sup.- denotes HSO.sub.4.sup.- , CH.sub.3 SO.sub.4.sup.- , Cl.sup.-, Br.sup.-, 1/2 2ZnCl.sub. 4.sup.-.sup.- or CH.sub.3 COO.sup.-. The said compounds are dyes for synthetic textile material.
[EN] BENZO 5-MEMBERED UNSATURATED HETEROCYCLIC COMPOUNDS AND PREPARATION METHODS THEREOF<br/>[FR] COMPOSÉS DE BENZO HÉTÉROCYCLIQUES INSATURÉS À 5 ÉLÉMENTS ET PROCÉDÉS POUR LES PRÉPARER
申请人:INST MED BIOTECHNOLOGY CAMS
公开号:WO2012068702A1
公开(公告)日:2012-05-31
Disclosed are benzo 5-membered unsaturated heterocyclic compounds represented by formula I and their pharmaceutically acceptable salts, preparation methods and uses thereof in the preparation of the drugs for treating osteoporosis, wherein each substituent of formula (I) is defined as the description.