TY - JOUR
T1 - MCM-41 supported imidazole-based dithienylethene
T2 - Efficient and recyclable fluorescent chemosensor for Fe3+ ions in aqueous media
AU - Alenazi, Maha H.
AU - Al-Betar, Abdulrahman F.
AU - Alshehri, Salimah
AU - AL-Zahrani, Asla A.
AU - Al-Ghamdi, Azza
AU - Abboud, Mohamed
N1 - Publisher Copyright:
© 2025 Elsevier B.V.
PY - 2025/4
Y1 - 2025/4
N2 - An imidazole-based dithienylethene (DTE) was successfully synthesised and immobilized into MCM-41 mesoporous silica surface to prepare efficient and recyclable Fe3+ ions fluorescent chemosensors. In this work, DTE was immobilized into commercial MCM-41 and amino-functionalized MCM-41 (N-MCM-41) via physical method to afford DTE@MCM-41 and DTE@N-MCM-41 materials, respectively. DTE was also incorporated into MCM-41 through chemical bonding after reaction between iodopropyl-functionalized MCM-41 (I-MCM-41) and DTE to form DTE-MCM-41 material. The obtained materials were fully characterized and evaluated as Fe3+ ions selective fluorescent chemosensors in aqueous media over various metal ions. The fluorescence intensity of MCM-41 supported DTE was quenched immediately after the addition of Fe3+ ions. In addition, the detection limit (DL) of MCM-41 supported DTE (DTE-MCM-41) was found to be 1.42 nM. Furthermore, the reusability of these three materials was also investigated during four successive cycles. Materials DTE-MCM-41 and DTE@N-MCM-41 exhibited higher stability than DTE@MCM-41.
AB - An imidazole-based dithienylethene (DTE) was successfully synthesised and immobilized into MCM-41 mesoporous silica surface to prepare efficient and recyclable Fe3+ ions fluorescent chemosensors. In this work, DTE was immobilized into commercial MCM-41 and amino-functionalized MCM-41 (N-MCM-41) via physical method to afford DTE@MCM-41 and DTE@N-MCM-41 materials, respectively. DTE was also incorporated into MCM-41 through chemical bonding after reaction between iodopropyl-functionalized MCM-41 (I-MCM-41) and DTE to form DTE-MCM-41 material. The obtained materials were fully characterized and evaluated as Fe3+ ions selective fluorescent chemosensors in aqueous media over various metal ions. The fluorescence intensity of MCM-41 supported DTE was quenched immediately after the addition of Fe3+ ions. In addition, the detection limit (DL) of MCM-41 supported DTE (DTE-MCM-41) was found to be 1.42 nM. Furthermore, the reusability of these three materials was also investigated during four successive cycles. Materials DTE-MCM-41 and DTE@N-MCM-41 exhibited higher stability than DTE@MCM-41.
KW - Fe ions detection
KW - Imidazole-based dithienylethene
KW - Mesoporous organosilica
KW - Recyclable fluorescent chemosensor
UR - https://www.scopus.com/pages/publications/85217819440
U2 - 10.1016/j.inoche.2025.114082
DO - 10.1016/j.inoche.2025.114082
M3 - Article
AN - SCOPUS:85217819440
SN - 1387-7003
VL - 174
JO - Inorganic Chemistry Communications
JF - Inorganic Chemistry Communications
M1 - 114082
ER -