Effect of electron-donating groups on the excited state spectroscopy and dynamics of 2′-hydroxychalcone derivatives

Raid J. Abdel-Jalil, A. Ramadan Ibrahim, Osama K. Abou-Zied*

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةArticleمراجعة النظراء

1 اقتباس (Scopus)

ملخص

We investigated the effect of different electron-donating groups on the intramolecular charge transfer (ICT) process in three hydroxychalcone derivatives. More efficient ICT was observed when replacing N(Me)2 by pyrrolidine due to less hydrogen bonding with solvent. Adding NH2 to the structure caused more planarity that was detected as a larger fluorescence quantum yield and narrower fluorescence peak. This was confirmed by femtosecond transient absorption in which the intramolecular twisting process, observed in the other derivatives, was absent in the presence of NH2. This work should be a useful step toward understanding and tailoring the excited state spectroscopy of chalcone derivatives.

اللغة الأصليةEnglish
رقم المقال140299
دوريةChemical Physics Letters
مستوى الصوت813
المعرِّفات الرقمية للأشياء
حالة النشرPublished - فبراير 1 2023
منشور خارجيًانعم

ASJC Scopus subject areas

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