Results 91 to 100 of about 145,964 (267)
Metal‐Free Covalent Organic Frameworks for Photocatalytic CO2 Reduction
ChemistryEurope, EarlyView.This review presents an environmentally sustainable strategy to address the critical issue of escalating atmospheric CO2 levels. It explores the application of metal‐free covalent organic frameworks in a photocatalytic approach, offering a green and efficient strategy for carbon dioxide reduction and contributing to climate change mitigation.
Supriti Dutta +3 more
wiley +1 more source
Strategies for producing biochars with minimum PAH contamination [PDF]
With the aim to develop initial recommendations for production of biochars with minimal contamination with polycyclic aromatic hydrocarbons (PAHs), we analysed a systematic set of 46 biochars produced under highly controlled pyrolysis conditions.
Buss, Wolfram +3 more
core +1 more source
Carbon Energy, EarlyView.Atomic‐scale design principles for LOHC dehydrogenation: Tailoring geometric and electronic effects in metal catalysts to bridge the molecular structure of LOHC and dehydrogenation performance. ABSTRACT The advancement of hydrogen‐based energy systems necessitates innovative solutions for safe, efficient hydrogen storage and transportation.
Yongxiao Tuo +8 more
wiley +1 more source
Polycyclic aromatic hydrocarbons
, 2007 Polycyclic aromatic hydrocarbons (PAH) are a group of structurally related chemical compounds that are frequently produced during incomplete combustion of organic matter and are among the most widespread environmental pollutants. This chapter enumerates common sources of environmental PAH that contribute to human exposures including air and water ...
Stellman, Steven D., Guidotti, Tee L.
openaire +2 more sources
Polycyclic Aromatic Hydrocarbons [PDF]
Journal of Chemical Education, 2004 The Featured Molecules for the month of February are a number of polycyclic aromatic hydrocarbons (PAHs) discussed in the article “Fluorescence, Absorption, and Excitation Spectra of Polycyclic Aro...
openaire +1 more source
Identification of polycyclic aromatic hydrocarbons [PDF]
The nature of the Very Small Grains evidenced by K. Sellgren (1985) is discussed. Thsir stability suggests that they are graphitic material and specifically Polycyclic Aromatic Hydrocarbons (PAHs).
Dhendecourt, L., Leger, A.
core +1 more source
Chemistry – A European Journal, EarlyView.Chiral octaazaperopyrenedioxide (OAPPDO) fluorophores were obtained by functionalizing with BINOL and related fragments bridging the bay position. They possess conformational flexibility but remarkable thermal stability with respect to racemization of the central chromophore, which allowed the study of their chiroptical properties, including circular ...
Bastian Rojas‐Deij +8 more
wiley +1 more source
Twisted 1‐ and 2‐Azaperopyrenes: Synthesis, Structure, and Properties
Chemistry – A European Journal, EarlyView.ABSTRACT A synthesis of hitherto unknown 1‐ and 2‐azaperopyrenes, twisted nitrogen‐doped peropyrenes, is reported. The synthesis is based on a Brønsted acid‐mediated benzannulation of alkynes. Key alkyne intermediates are synthesized via two complementary routes, including a Pd/C‐catalyzed, copper‐ and amine‐free Sonogashira‐type coupling of (hetero ...
Ricardo Molenda +4 more
wiley +1 more source
Risk assessment of chemical substances of safety concern generated in processed meats
Food Science and Human Wellness, 2019 This manuscript is reviewing the presence of substances of safety concern that may be generated in different types of meat products. Such substances include N-nitrosamines that can be generated under certain conditions when using nitrite as preservative,
Mónica Flores +3 more
doaj +1 more source
Chemistry – A European Journal, EarlyView.ABSTRACT Molecules that violate Hund's rule by exhibiting an inverted singlet–triplet gap (STG), where the first excited singlet (S1${\rm S}_1$) lies below the triplet (T1${\rm T}_1$), are rare but hold great promise as efficient fifth‐generation light emitters.
Atreyee Majumdar +1 more
wiley +1 more source