Results 11 to 20 of about 9,110 (204)

Rotational-state-selected Carbon Astrochemistry

CHIMIA
The addition of individual quanta of rotational excitation to a molecule has been shown to markedly change its reactivity by significantly modifying the intermolecular interactions. So far, it has only been possible to observe these rotational effects in
Jutta Toscano
doaj   +4 more sources

Enhanced Resolution in EPR Spectroscopy Using para-Hydrogen Matrices. [PDF]

Angew Chem Int Ed Engl
We demonstrate the advantageous properties of solid para‐hydrogen (p‐H2) matrices for electron paramagnetic resonance (EPR) spectroscopy by investigating the 2,2,6,6‐tetramethylpiperidinyloxyl (TEMPO) radical and an in situ generated P‐centered mono‐radical.
Portela-González A, Sander W, Eckhardt AK.   +2 more
europepmc   +2 more sources

Editorial: Refractory Astrochemistry [PDF]

Frontiers in Astronomy and Space Sciences, 2022
Ryan C. Fortenberry, Stefan T. Bromley, Stefan T. Bromley   +2 more
doaj   +2 more sources

Astrochemistry: overview and challenges [PDF]

, 2017
This paper provides a brief overview of the journey of molecules through the Cosmos, from local diffuse interstellar clouds and PDRs to distant galaxies, and from cold dark clouds to hot star-forming cores, protoplanetary disks, planetesimals and ...
van Dishoeck, Ewine F.
core   +3 more sources

Influences on Infrared Spectra of Benzene Ices for Titan, Comets, and Beyond: Annealings, Artifacts, and Isosbestic Points

The Planetary Science Journal, 2023
Infrared (IR) spectra are needed for both laboratory and observational studies of extraterrestrial ices, both within the solar system, such as for trans-Neptunian objects, comets, and Titan, and in the interstellar medium.
Reggie L. Hudson, Perry A. Gerakines
doaj   +1 more source

Gas-phase Ortho-to-para Ratio of Formaldehyde Formed at Low Temperatures in Laboratory Ices

The Astrophysical Journal Letters, 2023
The ortho-to-para ratio (OPR) of formaldehyde (H _2 CO) has been used as a probe to estimate the formation temperature of molecules in interstellar, circumstellar, and cometary environments, relying on the assumption that nuclear spin conversion is ...
K. M. Yocum, O. H. Wilkins, J. C. Bardwell, S. N. Milam, P. A. Gerakines   +4 more
doaj   +1 more source

Aromatic Hydrocarbons, Diamonds, and Fullerenes in Interstellar Space: Puzzles to be Solved by Laboratory and Theoretical Astrochemistry [PDF]

, 2000
New research is presented, and previous research is reviewed, on the emission and absorption of interstellar aromatic hydrocarbons. Emission from aromatic hydrocarbons dominate the mid-infrared emission of many galaxies, including our own Milky Way ...
Allamandola, Allamandola, Allamandola, Allamandola, Anders, Andriesse, Bakes, Bakes, Becker, Beintema, Bettens, Blanco, Borghesi, Boulanger, Brooke, Brooke, Cesarsky, Cesarsky, Chiar, Chiar, Cohen, Cohen, Cohen, Cook, Dartois, de Frees, Draine, Duley, Duley, Foing, Foing, Fulara, Gillett, Goeres, Graham, Harvey, Herbig, Heymann, Hudgins, Hudgins, Joblin, K. Sellgren, Kroto, Kroto, Langhoff, Lewis, Léger, Mattila, Merrill, Moutou, Onaka, Oudmaijer, Papoular, Pauzat, Pauzat, Pendleton, Platt, Puget, Puget, Roche, Roche, Russell, Sakata, Sakata, Salama, Salama, Schutte, Schutte, Scott, Sellgren, Sellgren, Sellgren, Sellgren, Sellgren, Sellgren, Sellgren, Sellgren, Snow, Somerville, Szczepanski, Uchida, Uchida, Whitcomb   +82 more
core   +2 more sources

Astrochemistry of Sub-Millimeter Sources in Orion: Studying the Variations of Molecular Tracers with Changing Physical Conditions [PDF]

, 2003
Cornerstone molecules (CO, H_2CO, CH_3OH, HCN, HNC, CN, CS, SO) were observed toward seven sub-millimeter bright sources in the Orion molecular cloud in order to quantify the range of conditions for which individual molecular line tracers provide ...
A. M. S. Boonman, Aso, Bachiller, Bachiller, Bacmann, Bally, Bally, Bergin, Blake, Blake, Blake, Blake, Boonman, Boonman, Boonman, Buckle, Castets, Ceccarelli, Charnley, Charnley, Chernin, Chini, Collings, D. Johnstone, Dartois, Doty, E. F. van Dishoeck, Flower, Fraser, Gibb, Green, Green, Harvey, Hatchell, Helmich, Henriksen, Hillenbrand, Hillenbrand, Hogerheijde, Hurt, Jansen, Jansen, Johnson, Johnstone, Johnstone, Jørgensen, Keane, Keane, Lahuis, Leen, Lees, Li, Lis, MacDonald, Mangum, Mangum, Mezger, Mitchell, Motte, Rawlings, Reipurth, Reipurth, Reipurth, Rodgers, Schilke, Schinke, Schreyer, Schöier, Serabyn, Shu, Thronson, Tielens, van der Tak, van der Tak, van Dishoeck, van Dishoeck, van Dishoeck, van Dishoeck, Wilson, Wolstencroft, Yu, Yu   +81 more
core   +3 more sources

An Efficient Synthesis of Oxygen-Bridged Spirooxindoles via Microwave-Promoted Multicomponent Reaction

Molecules, 2023
A microwave-promoted multicomponent reaction of isatins, α-amino acids and 1,4-dihydro-1,4-epoxynaphthalene is achieved under environmentally friendly conditions, delivering oxygen-bridged spirooxindoles within 15 min in good to excellent yields.
Yaojing Shi, Hua Zhao, Yufen Zhao
doaj   +1 more source

Exploring outer space biophysical phenomena via SpaceLID

Scientific Reports, 2023
Extensive investigations in outer space have revealed not only how life adapts to the space environment, but also that interesting biophysical phenomena occur. These phenomena affect human health and other life forms (animals, plants, bacteria, and fungi)
Shanshan Wang, Tao Wang, Xian Zeng, Xinyi Chu, Dongzhi Zhuoma, Yufen Zhao, Yu Zong Chen   +6 more
doaj   +1 more source