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A new imidazolium acridine derivative as fluorescent chemosensor for pyrophosphate and dihydrogen phosphate |
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| Authors: | Sook Kyung Kim Su Jung Han In-Ja Lee Kap Duk Lee Juyoung Yoon |
| Institution: | a Division of Nano Science (BK21) and Department of Chemistry, Ewha Womans University, 11-1 Daehyon-Dong, Sodaemun-Ku, Seoul 120-750, Republic of Korea b Department of Chemistry, Dongguk University, Kyungju, Kyungbuk 780-714, Republic of Korea |
| Abstract: | A new acridine derivative bearing two imidazolium groups has been synthesized. This chemosensor displayed a large fluorescent quenching effect with pyrophosphate and a unique fluorescent enhancement with H2PO4−. The strong (C-H)+?X− hydrogen bonding between the imidazolium moieties and anions is the key interaction for the recognition. The association constant of 1 with pyrophosphate was calculated as 4.9×107 M−1. |
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