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|a 10.1021/acs.langmuir.3c03426
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|a eng
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|a Umesh
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|a Thermo-Chemical Cues-Mediated Strategy to Control Peptide Self-Assembly and Charge Transfer Complexation
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|c 2024
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|a Text
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|a ƒaComputermedien
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|a Date Completed 07.02.2024
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|a Date Revised 15.02.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Peptide amphiphiles (PAs) are known for their remarkable ability to undergo molecular self-assembly, a process that is highly responsive to the local microenvironment. Herein, we design a pyrene tethered peptide amphiphile Py-VFFAKK, 1 that exhibits pathway-driven self-assembly from metastable nanoparticles to kinetically controlled nanofibers and thermodynamically stable twisted bundles upon modulations in pH, temperature, and chemical cues. The presence of the pyrene moiety ensures donation of the electron to an electron acceptor, namely, 7,7,8,8-tetracyanoquinodimethane (TCNQ), to form a supramolecular charge transfer complex in aqueous solution that was studied in detail with microscopic and spectroscopic techniques. Excitation of the donor species in its excimer state facilitates electron donation to the acceptor moiety, paving away a long-lived charge-separated state that persists for over a nanosecond, as ascertained through transient absorption spectroscopy. Finally, the self-assembled charge transfer complex is explored toward antimicrobial properties with Escherichia coli while maintaining biocompatibility toward L929 mice fibroblast cells
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Peptides
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|a Pyrenes
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|a Ralhan, Jahanvi
|e verfasserin
|4 aut
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|a Kumar, Vikas
|e verfasserin
|4 aut
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|a Bhatt, Himanshu
|e verfasserin
|4 aut
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|a Nath, Debasish
|e verfasserin
|4 aut
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|a Mavlankar, Nimisha A
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|a Ghosh, Hirendra N
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|a Pal, Asish
|e verfasserin
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 40(2024), 5 vom: 06. Feb., Seite 2754-2763
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|g volume:40
|g year:2024
|g number:5
|g day:06
|g month:02
|g pages:2754-2763
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