36711-69-0Relevant articles and documents
Rational design, facile synthesis, and linear/nonlinear optical properties of novel two-photon absorption stilbene derivatives with different configurations
Cai, Zhi-Bin,Dai, Huan,Li, Sheng-Li,Lou, Qiao-Xian,Tian, Yu-Peng
, (2021/08/18)
Four novel two-photon absorption compounds (1MOBI, 2MOHA, 3BrBI, and 4BrHA), which have assembled stilbene π-bridge, different electron acceptors and donors, were synthesized conveniently via the one-step Horner-Wadsworth-Emmons reaction. Their configurations are A-π-D-π-A, D′-π-D-π-D′, A′-π-A-π-A′, and D-π-A-π-D, respectively. Their linear and nonlinear optical properties including linear absorption, one-photon excited fluorescence, two-photon absorption, and two-photon excited fluorescence, were systematically investigated in various solvents. The results demonstrate that the compounds with dihexylamino donors exhibit good optical properties. 2MOHA and 4BrHA exhibit large two-photon absorption cross-sections (2183 and 1737 GM) in DMF, which are larger than those of many known stilbene derivatives. The relationships between the structures and the optical properties were studied aided with the time-dependent density functional theory calculations.
ANTHRADITHIOPHENE DERIVATIVES, PROCESS FOR THE PREPARATION THEREOF AND POLYMERS THAT CONTAIN THEM
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Page/Page column 34; 35, (2019/10/04)
Anthradithiophene derivative having general formula (I). Said anthradithiophene derivative can be advantageously used in the synthesis of electron donor polymers, said polymers being further subject matter of the present invention. Said polymers can be advantageously used in the construction of photovoltaic devices (or solar devices) such as, for example, photovoltaic cells (or solar cells), photovoltaic modules (or solar modules), either on a rigid support or on a flexible support. Furthermore, said polymers can be advantageously used in the construction of Organic Thin Film Transistors (OTFTs), or Organic Field Effect Transistors (OFETs), or Organic Light-Emitting Diodes (OLEDs).
A Strategy To Obtain o-Naphthoquinone Methides: Ag(I)-Catalyzed Cyclization of Enynones for the Synthesis of Benzo[ h]chromanes and Naphthopyryliums
Wu, Feng,Zhu, Shifa
supporting information, (2019/03/08)
A new strategy to obtain o-NQM intermediates through a ring-formation strategy by Ag(I)-catalyzed cyclization of 2-alkenylphenyl alkynyl ketones and its [4 + 2] annulations with styrenes has been developed. This reaction features high efficiency, mild reaction conditions, as well as flexible substitutions and atom economy. The obtained benzo[h]chromane products were further oxidized to naphthopyryliums, which displayed tunable photophysical properties.
Ultrahigh volatile iodine uptake by hollow microspheres formed from a heteropore covalent organic framework
Yin, Zhi-Jian,Xu, Shun-Qi,Zhan, Tian-Guang,Qi, Qiao-Yan,Wu, Zong-Quan,Zhao, Xin
supporting information, p. 7266 - 7269 (2017/07/11)
We herein report the construction of a new heteropore COF which consists of two different kinds of micropores with unprecedented shapes. It exists as hollow microspheres and exhibits an extremely high volatile iodine uptake (up to 481 wt%) by encapsulating iodine in the inner cavities and porous shells of the microspheres.
Efficient Synthesis of Bis(dibromomethyl)arenes as Important Precursors of Synthetically Useful Dialdehydes
Bodzioch, Agnieszka,Owsianik, Krzysztof,Skalik, Joanna,Kowalska, Emilia,Stasiak, Anna,Ró?ycka-Soko?owska, Ewa,Marciniak, Bernard,Ba?czewski, Piotr
, p. 3509 - 3514 (2016/10/17)
This work presents an efficient synthesis of bis(dibromomethyl)benzenes and a bis(dibromomethyl)thiophene as precursors of aromatic dialdehydes by bromination of dimethyl-substituted arenes under various reaction conditions (yields up to 99%). Several new variants of this reaction, including the use of N-bromosuccinimide (NBS) and bromine, and various solvents to replace carbon tetrachloride, benzene and carbon disulfide, were also tested. In the optimised protocols, the inconvenient solvents were replaced by 1,2-dichloroethane (DCE) and/or acetonitrile. In the DCE protocols, we reduced reaction times 24-32-fold, reduced the amount of NBS a fewfold and lowered power consumption relative to the literature protocols. The procedures also allowed elimination of long-lasting incandescent irradiation (100-500 W). The replacement of NBS by bromine led to a further reduction in the amount of brominating agent. The obtained bromo derivatives were efficiently converted into the corresponding dialdehydes (90-96%), which in turn are useful in materials chemistry.
Heptagon-embedded pentacene: Synthesis, structures, and thin-film transistors of dibenzo[d,d′]benzo[1,2-a:4,5-a′]dicycloheptenes
Yang, Xuejin,Liu, Danqing,Miao, Qian
, p. 6786 - 6790 (2014/07/08)
This study presents a new class of conjugated polycyclic molecules that contain seven-membered rings, detailing their synthesis, crystal structures and semiconductor properties. These molecules have a nearly flat C 6-C7-C6-C7-C6 polycyclic framework with a p-quinodimethane core. With field-effect mobilities of up to 0.76cm2V-1s-1 as measured from solution-processed thin-film transistors, these molecules are alternatives to the well-studied pentacene analogues for applications in organic electronic devices. All sixes and sevens: A new class of conjugated polycyclic molecules have a nearly flat C6-C7-C6-C 7-C6 polycyclic framework with a p-quinodimethane core. With a field-effect mobility of up to 0.76cm2V-1s -1 as measured from solution-processed thin-film transistors, these molecules are alternatives to the pentacene analogues for application in organic electronic devices.
Synthesis and characterizations of novel spindle-like terphenyl-type chromophores for non-linear optical materials
Shi, Zuosen,Zhang, Xiaolong,Yang, Guochun,Su, Zhongmin,Cui, Zhanchen
scheme or table, p. 4110 - 4117 (2011/06/24)
A series of novel spindle-like terphenyl-type chromophores, based on 2,5-diphenyl-1,4-distyrylbenzene π-conjugating bridge, N,N-dimethyl and triphenyl amino donors, and Tricyanovinyldihydrofuran(TCF), 1,3,3-trimethyl-5- dicyanovinyl-1-cyclohexene (TDC) acceptors, have been synthesized successfully for the first time. And the non-linear optical properties were evaluated by using the finite-field (FF) method. The results show that, the first-order hyperpolarizability of the chromophores increase with the increase of the withdraw ability of the substituent group on the π-conjugating bridge.
