An observation concerning electronically excited retinal
نویسندگان
چکیده
منابع مشابه
Performance with an electronically excited didgeridoo
The didgeridoo is a wind instrument composed of a single large tube often used as drone instrument for backing up the mids and lows of an ensemble. A didgeridoo is played by buzzing the lips and blowing air into the didgeridoo. To play a didgeridoo continously one can employ circular breathing but the volume of air required poses a real challenge to novice players. In this paper we replace the ...
متن کاملElectronically Excited States of Interstellar Anions
In the search for carriers of the diffuse interstellar bands (DIBs), a nearly ubiquitous, as-of-yet unattributed interstellar absorption spectrum, new theories are being proffered to explain this astronomical phenomenon. One of these is that rarely occurring excited states of anions may be responsible for some of these features. Using state-of-the-art quantum chemical techniques we examine near...
متن کاملOn the electronically excited states of uracil.
Vertical excitation energies in uracil in the gas phase and in water solution are investigated by the equation-of-motion coupled-cluster and multireference configuration interaction methods. Basis set effects are found to be important for converged results. The analysis of electronic wave functions reveals that the lowest singlet states are predominantly of a singly excited character and are th...
متن کاملPhotodecarbonylation of Diphenylcyclopropenone – a Direct Pathway to Electronically Excited Diphenylacetylene?
A comparison of combined IR and UV/Vis pump-probe measurements of diphenylcyclopropenone (DPCP) and diphenylacetylene (DPA) provides clear evidence that the photodecarbonylation of DPCP following excitation to its S2-state proceeds non-adiabatically to the electronic ground state of DPA. It is shown that transient absorption of electronically excited DPA is caused exclusively by photoexcitation...
متن کاملTheoretical studies on the electronically excited states of helium clusters
The vertical excited states of small helium clusters were calculated using configuration interaction singles (CIS) and the character of the states was determined from studying the attachment and detachment densities [2]. It was found that in the n=2 manifold of excited states the cluster excitations could be interpreted in terms of superpositions of atomic like states and good agreement with ex...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1977
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.74.8.3375