F. RAMIREZ
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View article: Giant Borderline Mucinous Ovarian Tumor: Report of an Unusual Clinical Case
Giant Borderline Mucinous Ovarian Tumor: Report of an Unusual Clinical Case Open
Borderline mucinous ovarian tumors represent a neoplastic entity with low malignant potential, accounting for approximately 15-20% of mucinous ovarian tumors. Although they are generally diagnosed at early stages and in younger patients, p…
View article: Chiroptical Signature and Absolute Configuration of Tröger’s Base-Based Triangular Macrocycles
Chiroptical Signature and Absolute Configuration of Tröger’s Base-Based Triangular Macrocycles Open
Chiral macrocycles are an attractive subject in supramolecular chemistry because of their proven relevance in appealing applications such as asymmetric catalysis, selective absorption, or chiral recognition. Taking into account the strong …
View article: Oxidation of [3]naphthylenes to cations and dications converts local paratropicity into global diatropicity
Oxidation of [3]naphthylenes to cations and dications converts local paratropicity into global diatropicity Open
Oxidized states of polycyclic aromatic hydrocarbons are of importance as they represent charged conductive species in organic semiconductor substrates. In this work, we investigated the properties of radical cations and dications of linear…
View article: CCDC 2233479: Experimental Crystal Structure Determination
CCDC 2233479: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2233478: Experimental Crystal Structure Determination
CCDC 2233478: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Helical Bilayer Nanographenes: Impact of the Helicene Length on the Structural, Electrochemical, Photophysical, and Chiroptical Properties
Helical Bilayer Nanographenes: Impact of the Helicene Length on the Structural, Electrochemical, Photophysical, and Chiroptical Properties Open
Helical bilayer nanographenes (HBNGs) are chiral π-extended aromatic compounds consisting of two π-π stacked hexabenzocoronenes (HBCs) joined by a helicene, thus resembling van der Waals layered 2D materials. Herein, we compare [9]HBNG, [1…
View article: Simultaneous Detection of Circularly Polarized Luminescence and Raman Optical Activity in an Organic Molecular Lemniscate
Simultaneous Detection of Circularly Polarized Luminescence and Raman Optical Activity in an Organic Molecular Lemniscate Open
Circularly polarized luminescence (CPL) and Raman optical activity (ROA) were observed in a single spectroscopic experiment for a purely organic molecule, an event that had so far been limited to lanthanide‐based complexes. The present obs…
View article: Simultaneous Detection of Circularly Polarized Luminescence and Raman Optical Activity in an Organic Molecular Lemniscate
Simultaneous Detection of Circularly Polarized Luminescence and Raman Optical Activity in an Organic Molecular Lemniscate Open
Circularly polarized luminescence (CPL) and Raman optical activity (ROA) were observed in a single spectroscopic experiment for a purely organic molecule, an event that had so far been limited to lanthanide‐based complexes. The present obs…
View article: Raman and ROA analyses of twisted anthracenes: connecting vibrational and electronic/photonic structures
Raman and ROA analyses of twisted anthracenes: connecting vibrational and electronic/photonic structures Open
In this article the Raman and Raman Optical Activity (ROA) spectra of a series of enantiomeric twisted anthracenes are presented.
View article: Atmospheric water triggers supramolecular gel formation of novel low molecular weight maslinic and oleanolic triterpenic derivatives
Atmospheric water triggers supramolecular gel formation of novel low molecular weight maslinic and oleanolic triterpenic derivatives Open
Novel maslinic and oleanolic triterpenic derivatives behave as supramolecular gelators. These compounds have the capacity to gelify DMSO and DMF by slowly capturing atmospheric water.
View article: Cover Feature: [All]‐<i>S</i>,<i>S</i>‐dioxide Oligo‐Thienylenevinylenes: Synthesis and Structural/Electronic Shapes from Their Molecular Force Fields (Chem. Eur. J. 2/2019)
Cover Feature: [All]‐<i>S</i>,<i>S</i>‐dioxide Oligo‐Thienylenevinylenes: Synthesis and Structural/Electronic Shapes from Their Molecular Force Fields (Chem. Eur. J. 2/2019) Open
Making more electron-deficient oligothiophene vinylenes (OTVs) by selective oxidation of the sulfur atoms converts them into significantly more π-conjugated molecules, with enhanced inter-ring/exocyclic π-conjugation and, concomitantly, wi…
View article: [All]‐<i>S</i>,<i>S</i>‐dioxide Oligo‐Thienylenevinylenes: Synthesis and Structural/Electronic Shapes from Their Molecular Force Fields
[All]‐<i>S</i>,<i>S</i>‐dioxide Oligo‐Thienylenevinylenes: Synthesis and Structural/Electronic Shapes from Their Molecular Force Fields Open
Oligo‐ S , S ‐dioxothienylenevinylenes have been prepared by transferring oxygen atoms to the sulfur atoms using the HOF ⋅ CH 3 CN complex. Their photophysical properties are presented in comparison with their thiophenevinylene congeners. …
View article: SEQUENTIAL INDUCTION OF CHIRALITY IN POLY(PHENYLACETYLENE)S
SEQUENTIAL INDUCTION OF CHIRALITY IN POLY(PHENYLACETYLENE)S Open
Several hierarchical levels of chirality have been detected in functionalized poly(phenylacetylene)s (PPA).1 In this work we have studied the chirality induction throughout these levels in PPA functionalized with phenylglycine methyl ester…
View article: Redox‐Active Chiroptical Switching in Mono‐ and Bis‐Iron Ethynylcarbo[6]helicenes Studied by Electronic and Vibrational Circular Dichroism and Resonance Raman Optical Activity
Redox‐Active Chiroptical Switching in Mono‐ and Bis‐Iron Ethynylcarbo[6]helicenes Studied by Electronic and Vibrational Circular Dichroism and Resonance Raman Optical Activity Open
Introducing one or two alkynyl–iron moieties onto a carbo[6]helicene results in organometallic helicenes ( 2 a , b ) that display strong chiroptical activity combined with efficient redox‐triggered switching. The neutral and oxidized forms…
View article: Fingerprints of Through-Bond and Through-Space Exciton and Charge π-Electron Delocalization in Linearly Extended [2.2]Paracyclophanes
Fingerprints of Through-Bond and Through-Space Exciton and Charge π-Electron Delocalization in Linearly Extended [2.2]Paracyclophanes Open
New stilbenoid and thiophenic compounds terminally functionalized with donor-donor, acceptor-acceptor, or donor-acceptor moieties and possessing a central [2.2]paracyclophane unit have been prepared, and their properties interpreted in ter…
View article: Iron Alkynyl Helicenes: Redox‐Triggered Chiroptical Tuning in the IR and Near‐IR Spectral Regions and Suitable for Telecommunications Applications
Iron Alkynyl Helicenes: Redox‐Triggered Chiroptical Tuning in the IR and Near‐IR Spectral Regions and Suitable for Telecommunications Applications Open
The combination of a bis‐alkynyl‐helicene moiety with two iron centers leads to novel electroactive species displaying unprecedented redox‐triggered chiroptical switching. Upon oxidation, strong changes of vibrational modes (either local o…
View article: Chiroptical Spectroscopy of C3 Molecules
Chiroptical Spectroscopy of C3 Molecules Open
The relevance of molecules with C3 symmetry comes from the fact of many of them, upon assembling as columnar helical macromolecules, are ideal platform for electro-optical devices, for example as liquid crystals. The properties of these de…
View article: CCDC 941881: Experimental Crystal Structure Determination
CCDC 941881: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 945457: Experimental Crystal Structure Determination
CCDC 945457: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Understanding the Origin of the VCD Signals on the Basis of a Nonredundant Coordinate Definition
Understanding the Origin of the VCD Signals on the Basis of a Nonredundant Coordinate Definition Open
The relationships between the chiroptical activity and the vibrational normal modes of epichlorohydrin have been investigated on the basis of a nonredundant internal coordinate definition not reported until now. These coordinates were veri…
View article: On the handedness of helical aggregates of C<sub>3</sub> tricarboxamides: a multichiroptical characterization
On the handedness of helical aggregates of C<sub>3</sub> tricarboxamides: a multichiroptical characterization Open
A multichiroptical characterization of the supramolecular polymers formed by C3 tricarboxamides is performed using ECD, VCD, CPL and theoretical calculations.