Results 11 to 20 of about 94,849 (289)

Ab-Initio Calculation of Molecular Aggregation Effects: a Coumarin-343 Case Study [PDF]

, 2013
We present time-dependent density functional theory (TDDFT) calculations for single and dimerized Coumarin-343 molecules in order to investigate the quantum mechanical effects of chromophore aggregation in extended systems designed to function as a new ...
Agranovich V., Agranovich V. M., Blankenship R. E., Cao J., Cheng Y.-C., Clark T., Collini E., Cossi M., Curutchet C., Davydov A. S., Didraga C., Didraga C., Ditchfield R., Donghyun Lee, Dreuw A., Endo M., Engel G. S., Fink R. F., Fink R. F., Frisch M. J., Gross E., Hariharan P., Hehre W. J., Howard I. A., Hsu C.-P., Ivanic J., K. Birgitta Whaley, Kasha M., Klug A., Knoester J., Kowalski K., Krishnan R., Krueger B. P., Liu W., Loren Greenman, Löwdin P.-O., Ma Y.-Z., Madjet M. E., Madjet M. E., Miller R. A., Mohan Sarovar, Muh F., Mulliken R. S., Muñoz Losa A., Nam Y. S., Novoderezhkin V. I., Pan F., Perdew J. P., Perdew J. P., Peverati R., Peverati R., Piecuch P., Runge E., Sarovar M., Sarovar M., Schmidt M. W., Scholes G. D., Scholes G. D., Scholes G. D., Scholes G. D., Scholes G. D., Scholes G. D., Scholes G. D., Shao Y., Sinnokrot M. O., Stephens P. J., Tawada Y., van Amerongen H., Witus L. S., Wloch M., Zhao H. M., Zhao Y.   +71 more
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Effects of Coumarin on Amylase Activity, Electrolyte Leakage and Growth of Wheat (Triticum aestivum L.), Barley (Hordeum vulgare L.) and Sesame (Sesamum indicium L.) [PDF]

Agrotechniques in Industrial Crops
Coumarin as a secondary metabolite widely found in plant species. Coumarin with a strong inhibitory effect on germination will be a good alternative for weed control. The mechanism of inhibition effects of coumarin has not yet been well understood.
Masoud Haidarizadeh, Vahed Lotfi, Bahman Fazeli-Nasab   +2 more
doaj   +1 more source

Coumarin – benzimidazole hybrids: A review on diverse synthetic strategies

Results in Chemistry, 2022
Benzimidazole and coumarin are highly significant pharmacophores in medicinal chemistry due to their numerous and compelling biological activities. It has been found that combining two or more pharmacophores in a single moiety can improve the efficiency ...
C.G. Arya, Munugala Chandrakanth, K. Fabitha, Neethu Mariam Thomas, Rakendu N. Pramod, Ramesh Gondru, Janardhan Banothu   +6 more
doaj   +1 more source

Microwave-Assisted Synthesis and Evaluation of Antimicrobial Activity of 3-{3-(s-Aryl and s-Heteroaromatic)acryloyl}-2Hchromen-2-one Derivatives [PDF]

, 2010
The exploration of potential utilization of microwaves as an energy source for heterocyclic synthesis was herein investigated using condensation of 3-acetylcoumarin (1) with aromatic and heteroaromatic aldehydes to afford the corresponding aromatic ...
Ajani, Al-Soud, Anderson, Anzari, Curir, DekicÌ, Devi, Gaber, Govori, Gürsoy, Hayes, Hwu, Jayashree, Kontogiorgis, Kostova, Kotali, Lacy, Larsen, Lee, Lewis, Lisgarten, Luszcski, Lévai, Majumdar, Mashelkar, Meteeva, Montagner Souza, Mouri, Neyts, Pivonka, Ragitha, Raviraj, Roma, Russell, Satyanarayana, Saxena, Schobert, Siddiqui, Son, Srinivas, Tamilvanan, Tassies, Tosun, Tran, Venugopala, Yamamoto, Yenjai, Yun   +47 more
core   +1 more source

Coumarin–Tetrapyrrolic Macrocycle Conjugates: Synthesis and Applications

Molecules, 2017
This review covers the synthesis of coumarin–porphyrin, coumarin–phthalocyanine and coumarin–corrole conjugates and their potential applications. While coumarin–phthalocyanine conjugates were obtained almost exclusively by tetramerization of coumarin ...
Ana F. R. Cerqueira, Vítor A. S. Almodôvar, Maria G. P. M. S. Neves, Augusto C. Tomé   +3 more
doaj   +1 more source

Structure and mechanical properties of artificial protein hydrogels assembled through aggregation of leucine zipper peptide domains [PDF]

, 2007
Artificial protein hydrogels made from a triblock protein (designated AC10A, where A is an acidic zipper domain and C10 comprises 10 repeats of the nonapeptide sequence exhibit normalized plateau storage moduli (G/nkT) less than 0.13 at all ...
Kornfield, Julia A., Shen, Wei, Tirrell, David A.   +2 more
core   +1 more source

Development auxiliaries for dyeing polyester with disperse dyes at low temperatures [PDF]

, 2017
High-molecular weight organic compounds known as carriers are widely used to expedite polyester dyeing at atmospheric pressure at 100 °C. However, carriers are usually poorly biodegradable and can partially plasticize fibres. Also, dyeing at temperatures
Carrión Fité, Francisco Javier, Radei, Shahram   +1 more
core   +1 more source

A single chemosensor for multiple analytes: fluorogenic and ratiometric absorbance detection of Zn²⁺, Mg²⁺ and F⁻, and its cell imaging [PDF]

, 2015
A simple coumarin based sensor 1 has been synthesized from the condensation reaction of 7-hydroxycoumarin and ethylenediamine via the intermediate 7-hydroxy-8-aldehyde-coumarin.
Gang, Wei, Lan, Mu, Li, Li, Redshaw, Carl, Xi, Zeng, Yuan-Hui, Zhao, Yun, Shen   +6 more
core   +2 more sources

Strain sensing based on radiative emission-absorption mechanism using dye-doped polymer optical fiber [PDF]

, 2017
A stress sensor based on a dye-doped polymeric optical fiber is able to detect stress by simple comparison of two luminescence peaks from a pair of energy transfer organic dyes. Coumarin 540A (donor) and Rhodamine 6G (acceptor) were doped in the core and
R. Furukawa, S. Kamimura
core   +2 more sources

Coumarin Derivatives Inhibit ADP-Induced Platelet Activation and Aggregation

Molecules, 2022
Coumarin was first discovered in Tonka bean and then widely in other plants. Coumarin has an anticoagulant effect, and its derivative, warfarin, is a vitamin K analogue that inhibits the synthesis of clotting factors and is more widely used in the ...
Ping-Hsun Lu, Tzu-Hsien Liao, Yau-Hung Chen, Yeng-Ling Hsu, Chan-Yen Kuo, Chuan-Chi Chan, Lu-Kai Wang, Ching-Yuh Chern, Fu-Ming Tsai   +8 more
doaj   +1 more source