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@ARTICLE{Singh:1040655,
      author       = {Singh, Pijush and Yadav, Manju Siyaram and Kuila, Soumen
                      and Paul, Amit Kumar and Ray, Debes and Misra, Souvik and
                      Naskar, Jishu and Aswal, Vinod Kumar and Nanda, Jayanta},
      title        = {{S}upramolecular {G}elation {B}ased on {N}ative {A}mino
                      {A}cid {T}yrosine and {I}ts {C}harge-{T}ransfer {C}omplex
                      {F}ormation},
      journal      = {Langmuir},
      volume       = {41},
      number       = {3},
      issn         = {0743-7463},
      address      = {Washington, DC},
      publisher    = {ACS Publ.},
      reportid     = {FZJ-2025-01989},
      pages        = {1639 - 1650},
      year         = {2025},
      abstract     = {Self-assembly of amino acids and short-peptide derivatives
                      attracted significant curiosity worldwide due to their
                      unique self-assembly process and wide variety of
                      applications. Amino acid is considered one of the important
                      synthons in supramolecular chemistry. Self-assembly
                      processes and applications of unfunctionalized native amino
                      acids have been less reported in the literature. In this
                      article, we are first-time reporting the self-assembly
                      process of tyrosine (Tyr), an aromatic amino acid, in
                      dimethyl sulfoxide (DMSO) solvent. Most of the studies
                      related to Tyr self-assembly were reported in different
                      aqueous solutions. In our work, we studied the self-assembly
                      in several common organic solvents and found that Tyr could
                      self-assemble into a supramolecular gel in dimethyl
                      sulfoxide (DMSO) solvent. The self-assembly process was
                      investigated by several techniques, such as UV–vis,
                      fluorescence, FTIR, and NMR spectroscopy. Morphological
                      features on the nanoscale were investigated through scanning
                      electron microscopy (SEM). SEM images indicated the
                      formation of nanofibrils with high aspect ratios. The
                      supramolecular gel property was investigated by different
                      rheological experiments. Computational study on the
                      self-assembly process of Tyr in DMSO medium suggested that
                      noncovalent interactions like hydrogen bonding and π–π
                      stacking among the Tyr molecules played a prominent role.
                      Finally, the charge-transfer complex formation ability of
                      electron-rich Tyr with electron-deficient
                      2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) was studied.
                      In the presence of DDQ due to the charge-transfer complex
                      formation, the supramolecular gel converted into a reddish
                      color solution, and their fibrillar nanoscale morphologies
                      collapsed.},
      cin          = {IBI-4},
      ddc          = {540},
      cid          = {I:(DE-Juel1)IBI-4-20200312},
      pnm          = {5241 - Molecular Information Processing in Cellular Systems
                      (POF4-524)},
      pid          = {G:(DE-HGF)POF4-5241},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {39811922},
      UT           = {WOS:001396621200001},
      doi          = {10.1021/acs.langmuir.4c03708},
      url          = {https://juser.fz-juelich.de/record/1040655},
}