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Vinod SM, Murugan Sreedevi S, Krishnan A, Perumal T, Chinnadurai R, Rajendran K. Interaction of an Aldose Sugar with Photoinduced Electron Transfer (PET) and Non-PET Based Acridinedione Dyes in Water: Hydrogen-bonding Evidences from Fluorescence Spectral Techniques Assisted by Molecular Docking Approach. J Fluoresc 2023; 33:471-486. [PMID: 36445509 DOI: 10.1007/s10895-022-03062-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 10/27/2022] [Indexed: 11/30/2022]
Abstract
Fluorescence spectral techniques aided by molecular docking (Mol.Doc) approach were employed in probing the molecular interactions existing between D-glucose and resorcinol based acridinedione (ADR) dyes. ADR dyes has been classified into PET and non-PET dyes based on the substitution in the 9th position of acridinedione ring structure. Addition of glucose to PET dye (ADR1) resulted in a decrease in the absorbance whereas to that of ADR2 dye (non-PET character in aqueous medium) resulted in a significant increase in the absorbance. The formation of an isosbestic point reveals the existence of a ground state interaction existing between the dye and sugar molecule. Addition of glucose to PET dye resulted in a drastic increase in the fluorescent enhancement (FE) and subsequent addition resulted in a marked decrease in the fluorescent intensity with no apparent shift of emission maximum. Interestingly, neither characteristic shift nor variation in emission intensity was observed in the case of ADR2 dye. Fluorescence lifetime studies of ADR1 dye in the presence of glucose illustrate the existence of multiple distinguishable micro environments of dye. Mol.Doc studies authenticate the co-existence of hydrogen bonding (HB) and hydrophobic interaction wherein the dye and sugar molecule acts as HB donor and acceptor resulting in a stable conformer. These conformers are governed predominantly by HB interactions. The nature of interaction of a simple sugar with ADR dyes are explored in depth by fluorescent techniques in coordination with docking studies is imparted in the present study.
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Affiliation(s)
- Seba Merin Vinod
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous)(University of Madras)Tamil Nadu, Gokul Bagh, E.V.R.Periyar Road, 833, Arumbakkam, Chennai, India
| | - Sangeetha Murugan Sreedevi
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous)(University of Madras)Tamil Nadu, Gokul Bagh, E.V.R.Periyar Road, 833, Arumbakkam, Chennai, India
| | - Anju Krishnan
- Department of Chemistry, Sathyabama Institute of Science and Technology, Tamil Nadu, Kamaraj Nagar, Semmancheri, Chennai, 600119, India
| | - Tamizhdurai Perumal
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous)(University of Madras)Tamil Nadu, Gokul Bagh, E.V.R.Periyar Road, 833, Arumbakkam, Chennai, India
| | - Raghupathi Chinnadurai
- Department of Chemistry, Sriram College of Arts and Science, Tamil Nadu, Perumalpattu, Tiruvallur, 602024, India
| | - Kumaran Rajendran
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous)(University of Madras)Tamil Nadu, Gokul Bagh, E.V.R.Periyar Road, 833, Arumbakkam, Chennai, India.
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