Results 61 to 70 of about 978 (179)

Photoschaltbare Peptide als molekulare Werkzeuge zur Kodierung von Strukturordnung und ‐Unordnung in intrazellulären Aggregaten

open access: yesAngewandte Chemie, Volume 138, Issue 3, 16 January 2026.
Wir präsentieren ein photoschaltbares Peptid‐Konjugat, das eine isomerabhängige Selbstassemblierung aufweist: Das planare trans‐Isomer bildet geordnete Nanofibrillen, während das nicht‐planare cis‐Isomer ungeordnete Aggregate ausbildet.
Julian Link   +6 more
wiley   +1 more source

Long-range photoinduced charge separation in tröger bases D/A dyads [PDF]

open access: yes, 2019
Tröger´s base (and its derivatives) are compounds comprised of two aromatic (or polyaromatic) rings bridged by a diazocine aliphatic cycle. We report herein the photophysical properties of two series of novel Tröger´s bases (TB) asymmetrically ...
Chesta, Carlos Alberto   +7 more
core   +1 more source

Photoswitchable Peptides as Molecular Tools to Encode Structural Order and Disorder in Intracellular Assemblies

open access: yesAngewandte Chemie International Edition, Volume 65, Issue 3, 16 January 2026.
We present a photoswitchable peptide conjugate which exhibits isomerism‐dependent self‐assembly: the planar trans‐isomer assembles into well‐ordered nanofibers while the non‐planar cis‐isomer yields disordered aggregates. Our study offers a direct visualization on the effects of structure formation inside living cells.
Julian Link   +6 more
wiley   +1 more source

Racemic 1,2,3,4,7,8,9,10-octafluoro-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine: an octafluorinated analogue of Tröger's base

open access: yesActa Crystallographica Section E, 2008
The title compound, C15H6F8N2, possesses a non-crystallographic twofold axis. The dihedral angle between the two benzene rings is 98.4 (2)°. The crystal structure involves intermolecular C—H...F hydrogen bonds.
Sergey Sergeyev   +3 more
doaj   +1 more source

Simple dissymmetrical and asymmetrical Tröger's bases: Photophysical and structural characterization [PDF]

open access: yes, 2020
Despite their continuously growing preparation and applications in the last decades, the photophysical properties of Tröger’s bases (TBs) with small substituents have not been analyzed.
Barja, Beatriz Carmen   +2 more
core   +1 more source

The Pyrolysis of 1,2,3,4,6,7-Hexathia-5,8-diazocine [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1990
Abstract Crystals of 1,2,3,4,6,7-hexathia-5,8-diazocine (1,4-S6(NH)2) were transformed around 363 K with a molar enthalpy change of the transformation of 2.40±0.07 kJ mol−1. Crystal systems of the two forms of 1,4-S6(NH)2 were identified to be orthorhombic (α-form) and monoclinic (β-form) below and above this temperature.
Yoshiyuki Kudo   +2 more
openaire   +1 more source

Ion mobility spectrometry-mass spectrometry (IMS-MS) of small molecules: separating and assigning structures to ions [PDF]

open access: yes, 2013
The phenomenon of ion mobility (IM), the movement/transport of charged particles under the influence of an electric field, was first observed in the early 20th Century and harnessed later in ion mobility spectrometry (IMS). There have been rapid advances
Agbonkonkon   +207 more
core   +1 more source

Long-range anisotropic effects in a V–shaped Tröger's base diformanilide: Conformational study by NMR assignment and DFT calculations [PDF]

open access: yes, 2018
Herein we describe the synthesis and conformational analysis of a Tröger's base diformanilide whose distinctive NMR spectra was fully assigned via DFT calculations.
Barja, Beatriz Carmen   +4 more
core   +4 more sources

Photopharmacology beyond azobenzene photoswitches

open access: yesResponsive Materials, Volume 3, Issue 4, November 2025.
Photopharmacology is advancing beyond traditional azobenzene photoswitches by developing new photoresponsive molecules with improved thermal stability, efficiency, and long‐wavelength activation, enhancing their potential for precise biomedical applications.
Huichao Guo   +5 more
wiley   +1 more source

Crystal structure of 1,1′-diformyl-4,4′-(6H,12H-5,11-methano-dibenzo[b,f][11,5]diazocine-2,8-diyl)dibenzene, C29H22N2O2

open access: yesZeitschrift für Kristallographie - New Crystal Structures, 2016
C29H22N2O2, triclinic, P1̅ (no. 2), a = 22.4995(6) Å, b = 9.9370(3) Å, c = 21.6466(6) Å, β = 115.941(1)°, V = 4352.1(2) Å3, Z = 4, Rgt(F) = 0.0487, wRref(F2) = 0.1473, T = 296 K.
Qiu Feng   +8 more
doaj   +1 more source

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