Abstract
Triarylboryl appended perylenediimide (PDI-TAB) is designed and synthesized. The incorporation of triarylboranes (TABs) decreases self-aggregation and increases the solubility of PDI-TAB in common organic solvents. Fluorescence emission colors ranging from red, yellow and green are realized by judiciously modulating the concentration of PDI-TAB in solution. The morphology and dimensions of the self-assemblies formed by PDI-TAB can be controlled by changing the experimental conditions. For example, PDI-TAB forms fibers of finite length when bulk powder is dispersed in methanol; it shows flexible lengthy 1D fibers when dichloromethane solution of PDI-TAB is injected into methanol solvent. PXRD analysis indicates that the molecular organization remains the same in both cases. PDI-TAB functions as a selective fluorogenic sensor for toxic fluoride anions; the sensing mechanism is explained by using theoretical calculations.
Original language | English |
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Pages (from-to) | 7218-7226 |
Number of pages | 9 |
Journal | Dalton Transactions |
Volume | 48 |
Issue number | 21 |
DOIs | |
State | Published - 28 May 2019 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2019 The Royal Society of Chemistry.
Funding
P. T. and P. S. thank the Science and Engineering Research Board (SERB), New Delhi, India and IISc, Bangalore, for financial support and K. K. N. thanks IISc, Bangalore, India for a research fellowship.
Funders | Funder number |
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Science and Engineering Research Board |