Results 41 to 50 of about 312,846 (164)

Organic Molecules in the Icy Bodies of Planetary Systems – Accepted Notions and New Ideas

Open Astronomy, 2018
Cometary bodies are acknowledged to contain some of the most pristine matter in the Solar System, including ices and minerals. Certain number of previously unidentified spectral emission features detected in comets can be explained as emission by ...
Simonia Irakli, Cruikshank Dale P.
doaj   +1 more source

Understanding of complex spin up-conversion processes in charge-transfer-type organic molecules

Nature Communications
Despite significant progress made over the past decade in thermally activated delayed fluorescence (TADF) molecules as a material paradigm for enhancing the performance of organic light-emitting diodes, the underlying spin-flip mechanism in these charge ...
Hyung Suk Kim, Sang Hoon Lee, Seunghyup Yoo, Chihaya Adachi   +3 more
doaj   +1 more source

Hunting for Complex Organic Molecules in the Interstellar Medium: The Role of Accurate Low-Cost Theoretical Geometries and Rotational Constants. [PDF]

J Phys Chem A, 2023
Barone V, Lazzari F.
europepmc   +1 more source

Gas-Phase vs. Grain-Surface Formation of Interstellar Complex Organic Molecules: A Comprehensive Quantum-Chemical Study. [PDF]

Int J Mol Sci, 2023
Martínez-Bachs B, Rimola A.
europepmc   +1 more source

First Interstellar Detection of Methyl Carbamate: A New Observational Anchor for Glycine Chemistry

The Astrophysical Journal Letters
Glycine—the simplest amino acid—has remained undetected in the interstellar medium despite decades of sensitive searches, motivating alternative approaches to constrain its astrochemical origin.
Chunguo Duan, Fengwei Xu, Jun Kang, Qian Gou, Xuefang Xu, Laurent Pagani, Jiaxin Du, Xi Chen   +7 more
doaj   +1 more source

Methyl Isocyanate Formation from Oxygen Insertion in Methyl Cyanide Ices

The Astrophysical Journal
In cold molecular clouds, UV photolysis of icy grain mantles generates radicals that lead to new molecule formation. When radical diffusion is limited by low temperatures, oxygen atom addition and insertion reactions, enabled by photolysis of common ice ...
Michelle R. Brann, Mahesh Rajappan, Karin I. Öberg   +2 more
doaj   +1 more source

The Cell and the Sum of Its Parts: Patterns of Complexity in Biosignatures as Revealed by Deep UV Raman Spectroscopy

Frontiers in Microbiology, 2019
The next NASA-led Mars mission (Mars 2020) will carry a suite of instrumentation dedicated to investigating Martian history and the in situ detection of potential biosignatures. SHERLOC, a deep UV Raman/Fluorescence spectrometer has the ability to detect
Haley M. Sapers, Haley M. Sapers, Haley M. Sapers, Joseph Razzell Hollis, Rohit Bhartia, Luther W. Beegle, Victoria J. Orphan, Jan P. Amend, Jan P. Amend   +8 more
doaj   +1 more source

O-bearing complex organic molecules at the cyanopolyyne peak of TMC-1: detection of C₂H₃CHO, C₂H₃OH, HCOOCH₃, and CH₃OCH₃. [PDF]

Astron Astrophys, 2021
Agúndez M, Marcelino N, Tercero B, Cabezas C, de Vicente P, Cernicharo J.   +5 more
europepmc   +1 more source

ALMA Spectral Survey of an Eruptive Young Star, V883 Ori (ASSAY). II. Freshly Sublimated Complex Organic Molecules in the Keplerian Disk

The Astrophysical Journal Supplement Series
We present an investigation of complex organic molecules (COMs) in the spatially resolved Keplerian disk around V883 Ori, an eruptive young star, based on a spectral survey carried out with the Atacama Large Millimeter/submillimeter Array in Band 6 (220 ...
Jae-Hong Jeong, Jeong-Eun Lee, Seonjae Lee, Giseon Baek, Ji-Hyun Kang, Seokho Lee, Chul-Hwan Kim, Hyeong-Sik Yun, Yuri Aikawa, Gregory J. Herczeg, Doug Johnstone, Lucas Cieza   +11 more
doaj   +1 more source

Synthetic strategies for complex molecules in organic chemistry

, 2023
Within this thesis, three synthetic procedures are discussed. Here different approaches were pursued to synthesize complex molecules. In the first chapter, an oxidative method is described to achieve C–C bond cleavage and thus target the transformations of the backbone structure of a molecule leading to late-stage manipulations.
openaire   +2 more sources