Details

Autor(en) / Beteiligte

• Geng, Yu-Han
• Xin, Yu
• Du, Jing
• Cui, Ming-Yi
• Liu, Yuan-Yuan
• Zhang, Le-Xi
• Ding, Bin

Titel

Yolk-shell composite optical sensors with chiral L-histidine/Rhodamine 6G for high-sensitivity “turn-on” detection of L-proline

Ist Teil von

• Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 2024-01, Vol.305, p.123468, Article 123468

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• [Display omitted] •A unique yolk-shell chiral composite optical sensor designated as L-His&R6G@ZIF-8 (1) can be successfully prepared.•1 can effectively and sensitively detect L-Proline (L-Pro) using a "turn-on" detection strategy.•Further 1-based flexible mixed-matrix membrane has been prepared. Chirality is a ubiquitous phenomenon in nature and has attracted wide attention in the biomedicine, pharmaceutics and biosensing research fields. Enantiomeric recognition of chiral compounds, especially chiral drugs and chiral amino acids, is important for human health and nutrition. In this work, through the encapsulation of L-His&R6G (L-His = L-Histidine; R6G = Rhodamine 6G) into MOF@MOF framework ZIF-67@ZIF-8, composited material L-His&R6G@ZIF-67@ZIF-8 can be obtained. Additionally, through the etching process, a unique yolk-shell ZIF-8 chiral composite optical sensors L-His&R6G@ZIF-8 (1) can be successfully prepared. Photo-luminescent (PL) experiment also reveals that 1 can highly sensitively detect L-Proline (L-Pro) through the “turn-on” detection strategy (KBH = 1.22 × 104 M−1 and detection limit 1.9 μM). Further yolk-shell L-His&R6G@ZIF-8-based fabricate flexible mixed-matrix membranes has been prepared using doctor-blading technique, which show significant fluorescence enhancement effect under ultraviolet lamp. This work also provides the unique example of preparing chiral yolk-shell framework composite sensors, which have broad application in chiral sensing area.