Fluorescent OFF–ON polymer chemosensor bonded alternatively with 1,4-dioctyloxybenzene and (R,R)-salen for cascade Zn2+ and chiral recognition

Sakthivel, Sekarpandi ; Punniyamurthy, Tharmalingam (2012) Fluorescent OFF–ON polymer chemosensor bonded alternatively with 1,4-dioctyloxybenzene and (R,R)-salen for cascade Zn2+ and chiral recognition Tetrahedron: Asymmetry, 23 (8). pp. 570-576. ISSN 0957-4166

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.tetasy.2012.04.015

Abstract

The synthesis of the chiral main chain polymers 1a–b bonded alternatively with (R,R)-salen and 1,4-dioctyloxybenzene has been described employing a palladium-catalyzed C–C cross-coupling reaction as the key step. They are soluble in common organic solvents and act as a highly selective ‘OFF–ON’ fluorescent chemosensors toward Zn2+. The resultant Zn(II)-polymer complexes exhibit significant chiral recognition toward (R)- and (S)-1-phenyl-N-[(pyridin-2-yl)methylene]ethanamines 9 under ambient conditions.

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