Temperature- and Conformation-Dependent Luminescence of Benzanilides was written by Lewis, Frederick D.;Liu, Weizhong. And the article was included in Journal of Physical Chemistry A in 2002.Reference of 5388-42-1 This article mentions the following:
The luminescence of benzanilide, N-methylbenzanilide, and two cyclic analogs has been investigated as a function of temperature both in microcrystals and in the glass-forming solvent methyltetrahydrofuran. Potential energy surfaces for small-amplitude geometric relaxation of the excited states and large amplitude twisting about the amide bond in the ground and excited states have been explored using AM1 and RCIS calculations, resp. ZINDO calculations have been used to probe the electronic configuration of the planar and twisted singlet and triplet states. Correlation of the spectroscopic and computational results indicates that at 77 K benzanilide phosphorescence occurs from a planar 蟺,蟺* triplet state whereas fluorescence occurs from a singlet state with partially relaxed geometry. At higher temperatures, large-amplitude geometric relaxation results in the formation of an intramol. charge-transfer (TICT) state that is twisted about the amide C-N bond. This TICT state is responsible for the weak Stokes-shifted fluorescence observed from benzanilide and N-methylbenzanilide in fluid solution Inhibition of amide twisting in cyclic derivatives precludes observation of TICT fluorescence. In the experiment, the researchers used many compounds, for example, 2-Phenylisoindolin-1-one (cas: 5388-42-1Reference of 5388-42-1).
2-Phenylisoindolin-1-one (cas: 5388-42-1) belongs to indole derivatives. Indole produced by Proteus, Pseudomonas, Escherichia and other species was shown to be a growth promoting factor in Arabidopsis thaliana. Moreover, it is known that it controls biofilm formation. However, the role of indole in the cell has not been fully elucidated.Reference of 5388-42-1
Referemce:
Indole alkaloid derivatives as building blocks of natural products from聽Bacillus thuringiensis聽and聽Bacillus velezensis聽and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles