26559-73-9Relevant academic research and scientific papers
4-(2-Aminoethylamino)-7H-benz[de]benzimidazo[2,1-a]isoquinoline-7-one as a highly sensitive fluorescent labeling reagent for carnitine
Nakaya, Ken-Ichi,Tanaka, Toshiyuki,Shirataki, Yoshiaki,Shiozaki, Hisayoshi,Funabiki, Kazumasa,Shibata, Katsuyoshi,Matsui, Masaki
, p. 173 - 177 (2001)
4-(2-Aminoethylamino)-7H-benz[de]benzimidazo[2,1-a]isoquinoline-7-one, synthesized and identified by a HMBC study, can be used as a fluorescent labeling reagent for carnitine. The excitation and emission maxima in acetonitrile were observed at λ 454 and 508 nm, respectively. This reagent smoothly reacted with camitine in the presence of l-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride to afford the corresponding amide under mild conditions. The detection limit (S/N > 3) of camitine was ca. 12 fmol.
Solid-State Fluorophore Based on π-Extended Heteroaromatic Acceptor: Polymorphism, Mechanochromic Luminescence, and Electroluminescence
Chen, Wen-Cheng,Dai, Gu,Feng, Yan,Gu, Xiaomin,Huang, Bin,Ji, Yigang,Jiang, Dawei,Lee, Chun-Sing,Zhang, Ying,Zhao, Qiang
, p. 2454 - 2461 (2020/04/28)
A novel light-emitting material 4-(4-diphenylaminophenyl)-benzo[d,e]benzo[4,5]imidazo[2,1-a]isoquinolin-7-one (4-TPA-BBI) is synthesized and characterized. 4-TPA-BBI exhibits excellent polymorphism, mechanochromic luminescence (MCL), and electroluminescence properties. It can form three different aggregate species: yellow rod-like crystal (Y-crystal), orange needle-like crystal (O-crystal), and red solid (R-solid). It is observed that the Y-crystal can be reversibly changed to R-solid upon external stimuli, while O-crystal can be irreversibly transformed to R-solid via sublimation under a vacuum. Crystallographic and photophysical studies indicate that the Y-crystal featuring loose molecular packing demonstrates a high photoluminescence quantum yield (φPL ≈ 1) and obvious MCL property, while the compactly packed O-crystal shows a lower φPL of 0.646 with negligible MCL. A nondoped light-emitting device based on 4-TPA-BBI as an emitter exhibits bright orange emission with a peak at 588 nm, a high external quantum efficiency of 4.4%, and a maximum luminance of 22470 cd m-2
Positional isomeric chemosensors: Fluorescent and colorimetric cyanide detection based on Si-O cleavage
Chen, Yayun,Zhao, Luting,Fu, Hanghai,Rao, Caihui,Li, Zheyao,Liu, Chuanxiang
, p. 8734 - 8738 (2017/08/29)
Highly selective and sensitive fluorescent and colorimetric cis/trans isomers 3 were rationally designed and investigated for the fast detection and visualization of cyanide ions (TBACN and NaCN) via CN-promoted Si-O cleavage in aqueous solution and in the solid state. The CN-promoted desilylation induced significant variations of the optical signals of cis- and trans-3, which mainly depend upon the steric arrangement of the Si-O group in relation to the π-extended system.
NOVEL COLOR CONVERTER
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Paragraph 0288; 0289; 0325; 0326; 0327, (2016/10/17)
Color converter comprising at least one polymer and at least one organic fluorescent dye comprising at least one structural unit of the formula (I) where the structural unit may be mono- or polysubstituted by identical or different substituents and where one or more CH groups of the six-membered ring of the benzimidazole structure shown may be replaced by nitrogen.
Anion binding modes in cis-trans-isomers of a binding site-fluorophore-π-extended system
Zhou, Min,Chen, Jinju,Liu, Chuanxiang,Fu, Hanghai,Zheng, Nan,Zhang, Chuanxiu,Chen, Yong,Cheng, Jiagao
supporting information, p. 14748 - 14751 (2014/12/11)
The cis- and trans-configurational isomers of 3 are designed and investigated as chemodosimeters for CN- ions for the first time. The cis-3 reveals a NIR absorbance at 717 nm (vs. trans-3, 620 nm), and such a configurational difference can be a
