Photochemistry Driven by Excited-State Aromaticity Gain or Antiaromaticity Relief
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F23%3A00569687" target="_blank" >RIV/61388963:_____/23:00569687 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1002/chem.202203748" target="_blank" >https://doi.org/10.1002/chem.202203748</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/chem.202203748" target="_blank" >10.1002/chem.202203748</a>
Alternative languages
Result language
angličtina
Original language name
Photochemistry Driven by Excited-State Aromaticity Gain or Antiaromaticity Relief
Original language description
Gain of aromaticity or relief of antiaromaticity along a reaction path are important factors to consider in mechanism studies. Analysis of such changes along potential energy surfaces has historically focused on reactions in the electronic ground state (S0), but can also be used for excited states. In the lowest ππ* states, the electron counts for aromaticity and antiaromaticity follow Baird's rule where 4n π-electrons indicate aromaticity and 4n+2 π-electrons antiaromaticity. Yet, there are also cases where Hückel's rule plays a role in the excited state. The electron count reversals of Baird's rule compared to Hückel's rule explain many altered physicochemical properties upon excitation of (hetero)annulene derivatives. Here we illustrate how the gain of excited-state aromaticity (ESA) and relief of excited-state antiaromaticity (ESAA) have an impact on photoreactivity and photostability. Emphasis is placed on recent findings supported by the results of quantum chemical calculations, and photoreactions in a wide variety of areas are covered.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10401 - Organic chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemistry - A European Journal
ISSN
0947-6539
e-ISSN
1521-3765
Volume of the periodical
29
Issue of the periodical within the volume
19
Country of publishing house
DE - GERMANY
Number of pages
30
Pages from-to
e202203748
UT code for WoS article
000937908600001
EID of the result in the Scopus database
2-s2.0-85148621163