Sutar, Papri ; Maji, Tapas Kumar (2017) Coordination polymer gels with modular nanomorphologies, tunable emissions, and stimuli-responsive behavior based on an amphiphilic tripodal gelator Inorganic Chemistry, 56 (16). pp. 9417-9425. ISSN 0020-1669
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Official URL: https://pubs.acs.org/doi/abs/10.1021/acs.inorgchem...
Related URL: http://dx.doi.org/10.1021/acs.inorgchem.7b01002
Abstract
The recent upsurge in research on coordination polymer gels (CPGs) stems from their synthetic modularity, nanoscale processability, and versatile functionalities. Here we report self-assembly of an amphiphilic, tripodal low-molecular weight gelator (L) that consists of 4,4′,4-[1,3,5-phenyl-tri(methoxy)]-tris-benzene core and 2,2′:6′,2″-terpyridyl termini, with different metal ions toward the formation of CPGs that show controllable nanomorphologies, tunable emission, and stimuli–responsive behaviors. L can also act as a selective chemosensor for ZnII with very low limit of detection (0.18 ppm) in aqueous medium. Coordination-driven self-assembly of L with ZnII in H2O/MeOH solvent mixture results in a coordination polymer hydrogel (ZnL) that exhibits sheet like morphology and charge-transfer emission. On the other hand, coordination of L with TbIII and EuIII in CHCl3/tetrahydrofuran solvent mixture results in green- and red-emissive CPGs, respectively, with nanotubular morphology. Moreover, precise stoichiometric control of L/EuIII/TbIII ratio leads to the formation of bimetallic CPGs that show emissions over a broad spectral range, including white-light-emission. We also explore the multistimuli responsive properties of the white-light-emitting CPG by exploiting the dynamics of LnIII-tpy coordination.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Chemical Society. |
ID Code: | 113007 |
Deposited On: | 29 May 2018 11:18 |
Last Modified: | 29 May 2018 11:18 |
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