نتایج جستجو برای: phenylene terephthalamide

تعداد نتایج: 2167  

2016
Stanimir Manolov Iliyan Ivanov

The compound named in the title was prepared from N1,N4-diphenethylterephthalamide 1. The resulting bis terephthalamide was subjected to an intramolecular α-amidoalkylation reaction with paraformaldehyde in the presence of heterogeneous catalyst TfOH/SiO2 to obtain 1,4-phenylenebis[(6,7-dimethoxy-3,4-dihydroisoquinolin-2(1H)-yl)methanone]. The structure of the newly synthesized compound was det...

Journal: :Materials advances 2021

Phenylene–ethynylene–anthracene copolymer was used as the emitter in triplet–triplet annihilation upconversion outperforming well-known poly(phenylene–vinylene)s.

Journal: :Chemical communications 2009
Gustavo Fernández Fátima García Fátima Aparicio Emilio Matesanz Luis Sánchez

Nanographite-like lamellae are obtained by the self-assembly of rectangular OPE amphiphiles peripherally decorated with polar and paraffinic chains.

Journal: :Chemical communications 2015
Darpan N Pandya Sylvie Pailloux David Tatum Darren Magda Thaddeus J Wadas

The development of bifunctional chelators (BFCs) which can stably chelate zirconium-89 ((89)Zr) while being conjugated to targeting molecules is an area of active research. Herein we report the first octadentate terephthalamide ligands, which are easily radiolabeled with (89)Zr and are highly stable in vitro. They represent a novel class of chelators, which are worthy of further development as ...

2011
Ji-lin Lu Xue-wen Liu Lin Li Yuan-dao Chen Guang-yu Shen

In the title compound, C(18)H(14)N(4)O(2)·C(8)H(6)O(4), both types of mol-ecule lie on inversion centers. In the N,N'-bis-(pyridin-3-yl)terephthalamide mol-ecule, the pyridine ring forms a dihedral angle of 11.33 (9)° with the central benzene ring. In the crystal, N-H⋯O and O-H⋯N hydrogen bonds connect the components into a three-dimensional network.

Journal: :Journal of Porphyrins and Phthalocyanines 2021

Increasing the number of meso-methine carbons porphyrin has led to a creation series vinylogous expanded porphyrins, while introduction an ortho-phenylene-unit as pyrrole-connecting two-carbon bridge usually leads prevention effective macrocyclic conjugation. Cyclopentene can serve conjugative increase conjugation owing its cis-geometry. In this work, ortho-phenylene-cyclopentene-bridged tetrap...

Journal: :Inorganic chemistry 2004
Marlon K Thompson Dan M J Doble Luke S Tso Serena Barra Mauro Botta Silvio Aime Kenneth N Raymond

The synthesis and relaxometric properties of hetero-tripodal hydroxypyridonate-terephthalamide gadolinium (Gd(3+)) chelates with differing structural features for probing human serum albumin (HSA) interactions are reported. The Gd(3+) complexes are divided into two series. The first series (3-5) features a benzyl derivative connected to the hydroxypyridonate (HOPO) moiety. The second series of ...

Journal: :Molecules 2012
Nadia A Mohamed Mohammad H Sammour Ali M Elshafai

Twelve novel intrinsically colored wholly aromatic azopolyamide-hydrazides containing various proportions of para- and meta-phenylene units were successfully synthesized by a low temperature (-10 °C) solution polycondensation reaction of either 4-amino-3-hydroxybenzhydrazide (4A3HBH) or 3-amino-4-hydroxybenzhydrazide (3A4HBH) with an equimolar amount of either 4,4'-azodibenzoyl chloride (4,4'AD...

Journal: :Chemical communications 2012
Sissel S Andersen Morten Jensen Anne Sørensen Eigo Miyazaki Kazuo Takimiya Bo W Laursen Amar H Flood Jan O Jeppesen

Binding studies between the electron accepting host cyclobis(paraquat-p-phenylene) and a series of electron donors in the presence of differently sized counteranions reveal that both the nature and the concentration of the anion have a large impact on the association strength of the resulting host-guest complex.

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