Results 91 to 100 of about 10,794 (262)

Mellitic Acid as a Stable Abiotic Precursor for Liquid‐Liquid Phase Separation: An RNA‐Independent Pathway for Prebiotic Compartmentalization

Chemistry – A European Journal, Volume 31, Issue 52, September 16, 2025.
Evidence is presented that prebiotically accessible mellitic (benzenehexacarboxylic) acid (MAc) is forming liquid droplets with short poly‐L‐lysine. The capacity of MAc to induce liquid‐liquid phase separation with short oligocations, along with abiotic synthesis routes, makes MAc a viable candidate for an ingredient of early prebiotic membraneless ...
Robert Dec, Michel W Jaworek, Matylda Wacławska, Wojciech Dzwolak, Roland Winter   +4 more
wiley   +1 more source

Spectroscopy: Aromatic astrochemistry [PDF]

Nature Reviews Chemistry, 2018
The first detection of rotational features of benzonitrile offers the opportunity to undesrtand the origin of PAHs in space.
openaire   +1 more source

Ion Source Complementarity for Characterization of Complex Organic Mixtures Using Fourier Transform Mass Spectrometry: A Review

Mass Spectrometry Reviews, Volume 44, Issue 5, Page 808-829, September/October 2025.
ABSTRACT Complex organic mixtures are found in many areas of research, such as energy, environment, health, planetology, and cultural heritage, to name but a few. However, due to their complex chemical composition, which holds an extensive potential of information at the molecular level, their molecular characterization is challenging.
Charlotte Mase, Maxime Sueur, Hélène Lavanant, Christopher Paul Rüger, Pierre Giusti, Carlos Afonso   +5 more
wiley   +1 more source

Redefining proton affinity for heteronuclear molecular species: quantum chemical insights

Discover Chemistry
One of the main problems with experimental methods for detecting proton affinity (PA) is that they cannot perform site-specific protonation. For heteronuclear molecular species that have two or more protonation sites, the experimental PA measurement only
E. E. Etim, J. P. Shinggu, H. S. Samuel, B. Bako, D. K. Sahoo, L. Mweene, S. Kaya   +6 more
doaj   +1 more source

Search of amino group in the Universe: 2-aminopyridine [PDF]

Serbian Astronomical Journal, 2015
In search for life in the Universe, scientists are interested in identification of molecules having amino (-NH2) group in the interstellar space. The aminoacetonitrile (NH2CH2CN), which is precursor of the simplest amino acid glycine (NH2CH2COOH)
Sharma M.K., Sharma M., Sharma A.K., Chandra S.   +3 more
doaj   +1 more source

Efficient calculation of van der Waals dispersion coefficients with time-dependent density functional theory in real time: application to polycyclic aromatic hydrocarbons

, 2007
The van der Waals dispersion coefficients of a set of polycyclic aromatic hydrocarbons, ranging in size from the single-cycle benzene to circumovalene (C66H20), are calculated with a real-time propagation approach to time-dependent density functional ...
Alberto Castro, Flower D. R., Giacomo Mulas, Giuliano Malloci, London F., Mahanty J., Miguel A. L. Marques, Parsegian V. A., Siegel G. J., Silvana Botti   +9 more
core   +3 more sources

Lack of PAH emission toward low-mass embedded young stellar objects [PDF]

, 2008
PAHs have been detected toward molecular clouds and some young stars with disks, but have not yet been associated with embedded young stars. We present a sensitive mid-IR spectroscopic survey of PAH features toward a sample of low-mass embedded YSOs. The
A. Crapsi, Acke, Allamandola, Arce, Basri, Bernstein, Bernstein, Boogert, C. P. Dullemond, Calvet, Chiang, Crapsi, Draine, Dullemond, Dullemond, E. F. van Dishoeck, Ehrenfreund, Evans, F. Lahuis, G. A. Blake, Geers, Geers, Geers, Gudipati, Habart, Habart, Hartmann, Helling, Hogerheijde, Jonkheid, Jørgensen, K. M. Pontoppidan, Kraus, Lahuis, Luhman, Manske, Mattioda, Peeters, Pontoppidan, Pontoppidan, Pontoppidan, Ressler, Siebenmorgen, Terada, Thi, Ulrich, V. C. Geers, van Dishoeck, van Dishoeck, Van Kerckhoven, Verstraete, Visser, Weingartner, Whitney   +53 more
core   +2 more sources

Network Analysis Reveals Spatial Clustering and Annotation of Complex Chemical Spaces: Application to Astrochemistry

Analytical Chemistry, 2022
How are molecules linked to each other in complex systems? In a proof-of-concept study, we have developed the method mol2net (https://zenodo.org/record/7025094) to generate and analyze the molecular network of complex astrochemical data (from high ...
A. Ruf, G. Danger
semanticscholar   +1 more source

The Genuine Carbene Conundrum

Chemistry – A European Journal, Volume 31, Issue 44, August 7, 2025.
From fleeting intermediates to well‐defined molecular structures, carbenes (neutral divalent carbon) remind us that the most reactive ideas often make a large impact. Despite their wide‐ranging applications, the direct characterization of these reactive species remains a persistent experimental challenge.
Bethany Sawyer, Jesse. L. Peltier, Rodolphe Jazzar   +2 more
wiley   +1 more source

Astrochemical Pathways to Complex Organic and Prebiotic Molecules: Experimental Perspectives for In Situ Solid-State Studies

Life, 2021
A deep understanding of the origin of life requires the physical, chemical, and biological study of prebiotic systems and the comprehension of the mechanisms underlying their evolutionary steps.
Daniele Fulvio, Alexey Potapov, Jiao He, Thomas Henning   +3 more
doaj   +1 more source