Donor-acceptor substituted polyenes : orientation in mono- and multilayers [PDF]
, 2010 Large molecules containing different chemical units whose interactions within the molecule result in new macroscopically observable effects, have become increasingly important.The organization of molecules of this type in ordered structures leads to ...
Bubeck, Christoph +5 more
core +1 more source
Energetics and Dynamics of the Low-Lying Electronic States of Constrained Polyenes: Implications for Infinite Polyenes [PDF]
, 2016 Steady-state and ultrafast transient absorption spectra were obtained for a series of conformationally constrained, isomerically pure polyenes with 5–23 conjugated double bonds (N). These data and fluorescence spectra of the shorter polyenes reveal the N
Nicole L. Wagner (1309209) +8 more
core +1 more source
Reversing the Bond Length Alternation Order in Conjugated Polyenes by Substituent Effects. [PDF]
, 2023 We have synthesised several push-pull substituted conjugated polyenes and determined their accurate C-C bond lengths and charge-density distribution by utilising quantum crystallographic techniques.
Yanai, Hikaru +9 more
core +1 more source
Novel linear and cyclic polyenes with dramatic aggregation-induced enhancements in photoresponsiveness [PDF]
, 2006 A series of new linear and cyclic polyenes including siloles, butadienes, cyclcobutenes, fulvenes, and 4H-pyrans are designed and synthesized. When molecularly dissolved in common organic solvents, all the polyenes are practically nonemissive.
Li, Zhen +6 more
core +1 more source
Chemistry & Biology, 1996 Polyenes are important for vision in all sighted species. The visual pigments (the rhodopsins) all use 11-cis-retinal as the chromophore; some possible reasons for the importance of this isomer are now emerging. New results on the involvement of xanthophils in the maintenance of the retina are also discussed.
openaire +2 more sources
Energetics and Dynamics of the Low-Lying Electronic States of Constrained Polyenes: Implications for Infinite Polyenes [PDF]
, 2013 Steady-state and ultrafast transient absorption spectra were obtained for a series of conformationally constrained, isomerically pure polyenes with 5–23 conjugated double bonds (N). These data and fluorescence spectra of the shorter polyenes reveal the N
Miriam M. Enriquez +17 more
core +1 more source
Terminally substituted conjugated polyenes : synthesis and energy transfer properties [PDF]
, 2010 The present publication summarizes the results of our investigations on conjugated polyenes with different end groups. The spectroscopic data reveal the possibi~ity of a selective electronic end group excitation in the conjugated systems influenced by ...
Effenberger, Franz, Wolf, Hans Christoph
core +1 more source
Efficient Screening of Organic Singlet Fission Molecules Using Graph Neural Networks
Advanced Science, EarlyView.A high‐throughput screening framework based on graph neural networks (GNNs) and multi‐level validation facilitates the identification of singlet fission (SF) candidates. By efficiently predicting excitation energies across 20 million molecules, and integrating TDDFT calculations, synthetic accessibility assessments, and GW+BSE calculations, this ...
Li Fu +5 more
wiley +1 more source
Aromatic Stabilities of Bridged Polyenes [PDF]
, 1986 The aromatic stabilities of bridged polyenes have been studied by means of the topological (graph-theoretical) resonance energy (TRE) model developed by the Zagreb Group a decade ago.
Trinajstić, Nenad +5 more
core +1 more source
Infrared spectroscopy of phytochrome and model pigments [PDF]
, 1990 Fourier-transform infrared difference spectra between the red-absorbing and far-red-absorbing forms of oat phytochrome have been measured in H2O and 2H2O. The difference spectra are compared with infrared spectra of model compounds, i.e. the (5Z,10Z,15Z)-
Gabriele Schmidt +9 more
core +1 more source