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Updated: Jan 24, 2026

Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
Structural transformation caused by pyridine carboxylate in rosebengal-modified metal framework: Synthesis and
Jianjun Li1, Yue Wu1, JianYe Zhuo1
1College of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, China.
Abstract:
In this paper, luminescent metal-organic framework was modified with a rosebengal dye. This resulting composite structure was confirmed with XRD, IR, TGA/DTG and photophysical spectroscopy. Detailed analysis suggested that it was responsive towards pyridine carboxylate (PC), a bio-indicator. Two responsive modes were found, which are absorption-based sensing (named colorimetric one) and emission-based sensing (named fluorescent ratiometric one), respectively. The sensing nature was explored as rosebengal structural transformation triggered by PC and energy transfer between metal framework and PC. These two responsive modes both obey linear performance against PC concentration, showing detection limit of 2.4 μM. Especially, fluorescent ratiometric sensing rendered high selectivity. Their practical sensing performance was discussed as well.
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