Conjugation Extension and Halochromic Behaviors of S-Fused Polycyclic Aromatic Hydrocarbons Bearing Cyclopenta[b]thiopyran Moieties,Chemistry - A European Journal

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Conjugation Extension and Halochromic Behaviors of S-Fused Polycyclic Aromatic Hydrocarbons Bearing Cyclopenta[b]thiopyran Moieties
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2022-11-14 , DOI: 10.1002/chem.202203238
Weinan Chen ₁ , Si Liu ₁ , Yingjian Ren ₁ , Shoudong Xie ₁ , Chuan Yan ₁ , Zhanglang Zhou ₁ , Gang Zhou ₁

Affiliation

Three S-fused polycyclic aromatic hydrocarbons bearing cyclopenta[b]thiopyran moieties show intriguing halochromic properties in both solution and solid states. Upon alternative treatments by trifluoroacetic acid and triethylamine, the absorption and the fluorescence can be reversibly switched. It is revealed that the introduced proton is on the cyclopentadiene ring while the positive charge is localized on the thiopyrylium ring.

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