1
|
Anupurath S, Krishnan A, Namasivayam D, Rajaraman V, Rajendran K. Competitive hydrogen bonding influences of fluorophore- urea-adenine system in water: Photophysical and photochemical approaches. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 237:118409. [PMID: 32361320 DOI: 10.1016/j.saa.2020.118409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 04/21/2020] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Abstract
Photophysical and photochemical investigation of photoinduced electron transfer (PET)-based acridinedione dye (ADR1) with urea in the presence of a nitrogenous base (adenine) were carried out in water. Urea suppresses the PET resulting in a fluorescence enhancement and the extent of binding is correlated and governed by the number of urea molecules surrounding the close vicinity of dye. On the contrary, adenine forms a true 1:2 complex with dye. Presence of adenine in dye-urea microenvironment results in the displacement of dye from the vicinity of urea molecules. The stability of dye-urea network in the presence of adenine reveals that the microenvironment of dye is governed and influenced by both urea and adenine. Introduction of adenine to dye-urea results in the formation of several hydrogen bonding assemblies that are competitive and influences the excited state characteristics of ADR1 dye. The micro assemblies comprise dye-urea (DU), dye-adenine (DA), urea-adenine (UA), urea-water (UW), urea-urea (UU), and adenine-water (AW) framework and the existence of several competitive hydrogen bonding results in a large variation in fluorescence properties of ADR1 dye. The presence of several assemblies also signifies that no confined phase selectively of DU or DA assemblies exist in any stoichiometric proportion in the aqueous phase. The binding constant, the variation in the fluorescence lifetime and its relative amplitude of DA in the presence of urea authenticate that the binding nature of dye-urea-adenine (DUA) is dependent on the several hydrogen bonding assemblies that coexist at any concentration. The extent of hydrogen bonding of DA is found to be entirely different from that of urea. Further, urea resulted in changes in the transient absorption peak of dye with a large variation in lifetime and shift of the transient absorption peaks. Fluorescence spectral techniques are used as an efficient tool in elucidating the binding nature of DU framework in the presence of non-fluorescent hydrogen-bonding solute like adenine.
Collapse
Affiliation(s)
- Sumita Anupurath
- Department of Chemistry, Anna Adarsh College for Women (Affiliated to University of Madras), Anna Nagar, Chennai 600 040, Tamil Nadu, India
| | - Anju Krishnan
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous) (Affiliated to University of Madras),833, GokulBagh, E.V.R.Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India
| | | | - Vasanthi Rajaraman
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous) (Affiliated to University of Madras),833, GokulBagh, E.V.R.Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India
| | - Kumaran Rajendran
- Department of Chemistry, Dwaraka Doss Goverdhan Doss Vaishnav College (Autonomous) (Affiliated to University of Madras),833, GokulBagh, E.V.R.Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India.
| |
Collapse
|
2
|
Anju K, Sumita A, Gayathri S, Vasanthi R, Rajendran K. Fluorescence Spectral Studies on the Interaction of Alanine and Valine with Resorcinol-Based Acridinedione Dyes in Aqueous Solution: A Comparative Study with Glycine. ACS OMEGA 2019; 4:12357-12365. [PMID: 31460353 PMCID: PMC6682030 DOI: 10.1021/acsomega.9b01011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 06/26/2019] [Indexed: 06/10/2023]
Abstract
Photophysical studies were carried out for simple amino acids like alanine and valine with resorcinol-based aqueous acridinedione (ADDR) dyes. ADDR dyes exhibit interesting excited-state characteristics on altering the substituents at the 9th and 10th sites (Scheme 1). The longest-wavelength absorption maxima remain the same on adding the amino acids to the fluorophore, whereas the excited-state behavior varies significantly mostly based on the nature of the substituent at the 9th position. The absence of fluorescence enhancement was observed with addition of β-alanine, l-alanine, and l-valine to ADDR1 dye (photoinduced electron transfer, PET), whereas addition of glycine exhibits enhancement accompanied with a shift toward a longer-wavelength region. Interestingly, the addition of amino acids to non-PET dyes results in a fluorescence quenching accompanied with a larger shift toward the shorter-wavelength region. The properties of fluorophore and nonfluorophore dyes in the presence of alanine or valine are found to be entirely different from those of glycine. The interaction of alanine with ADDR dyes is predominantly through H-bonding, but the structural aspects of H-bonding interactions of alanine and water are completely different from those of glycine and water. The time-correlated single-photon counting method portrays the existence of fluorophore in two distinguishable microenvironments in the presence of amino acids. The fluorescence spectral technique used as a tool in elucidating the mode of interaction of dye with neutral amino acids in aqueous solution is illustrated in the present study.
Collapse
Affiliation(s)
- Krishnan Anju
- Department
of Chemistry, Dwaraka Doss, Goverdhan Doss,
Vaishnav College (Autonomous), 833, Gokul Bagh, E.V.R. Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India
| | - Anupurath Sumita
- Department
of Chemistry, Anna Adarsh College for Women
College, Anna Nagar, Chennai 600040, Tamil Nadu, India
| | - Somasundaram Gayathri
- Department
of Chemistry, Dwaraka Doss, Goverdhan Doss,
Vaishnav College (Autonomous), 833, Gokul Bagh, E.V.R. Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India
| | - Rajaraman Vasanthi
- Department
of Chemistry, Dwaraka Doss, Goverdhan Doss,
Vaishnav College (Autonomous), 833, Gokul Bagh, E.V.R. Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India
| | - Kumaran Rajendran
- Department
of Chemistry, Dwaraka Doss, Goverdhan Doss,
Vaishnav College (Autonomous), 833, Gokul Bagh, E.V.R. Periyar Road, Arumbakkam, Chennai 600106, Tamil Nadu, India
| |
Collapse
|
3
|
Jia J, Wu A, Luan S. Spectrometry recognition of polyethyleneimine towards heavy metal ions. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.02.032] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
4
|
Subhasri A, Anbuselvan C, Rajendraprasad N. Twin applications of highly selective Cu2+ fluorescent chemosensor and cytotoxicity of 2-(2-phenylhydrazono)-1H-indene-1,3(2H)-dione and 2-(2-(4-methoxyphenyl)hydrazono)-1H-indene-1,3(2H)-dione: molecular docking and DFT studies. RSC Adv 2014. [DOI: 10.1039/c4ra11006d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Turn on chemosensor for paramagnetic Cu2+ have been developed based on indene 1,3-dione. Their ability to inhibit KB cell, molecular docking and DFT studies also carried out.
Collapse
|
5
|
Martinez Gomez SM, Alzate Sanchez DM, Rodríguez-Córdoba W, Sierra CA, Ochoa-Puentes C. Competitive One-Pot Reactions: Simultaneous Synthesis of Decahydroacridine-1,8-diones and 1,8-Dioxo-octahydroxanthenes and Photophysical Characterization. SYNTHETIC COMMUN 2013. [DOI: 10.1080/00397911.2013.831903] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
| | | | | | - Cesar A. Sierra
- a Departamento de Química , Universidad Nacional de Colombia , Bogotá , Colombia
| | | |
Collapse
|
6
|
Ashokkumar P, Ramakrishnan VT, Ramamurthy P. Photoinduced electron transfer (PET) based Zn2+ fluorescent probe: transformation of turn-on sensors into ratiometric ones with dual emission in acetonitrile. J Phys Chem A 2011; 115:14292-9. [PMID: 22066705 DOI: 10.1021/jp209061f] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Ratiometric sensors for the detection of metal ions have gained increasing attention due to its self-calibration tendency for the environmental effects. In this context, we have synthesized and characterized a dual emitting ratiometric Zn(2+) probe (1) having acridinedione as a fluorophore and N,N-bis(2-pyridylmethyl)amine (BPA) as a receptor unit. Existence of two different conformation of the molecule with photoinduced electron transfer (PET) from amine moiety to the acridinedione fluorophore leads to dual emission, namely locally excited (425 nm) and anomalous charge transfer emission (560 nm) in aprotic solvents. In the presence of one equivalent of Zn(2+), a 15-fold fluorescence enhancement in the locally excited state together with the quenching of charge transfer emission is observed. The intensity changes at the two emission peaks allow a ratiometric detection of Zn(2+) under PET signaling mechanism. The utilization of PET process for the ratiometric fluorescence change will further signify the importance of PET mechanism in sensing action. Addition of Zn(2+) to 1 in acetonitrile/water mixtures shows a single emission peak with fluorescence enhancement.
Collapse
Affiliation(s)
- P Ashokkumar
- National Centre for Ultrafast Processes, University of Madras, Taramani Campus, Chennai, India
| | | | | |
Collapse
|
7
|
Kumaran R, Ramamurthy P. Photophysical studies on the interaction of formamide and alkyl substituted amides with photoinduced electron transfer (PET) based acridinedione dyes in water. J Fluoresc 2011; 21:2165-72. [PMID: 21769603 DOI: 10.1007/s10895-011-0918-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Accepted: 07/04/2011] [Indexed: 10/18/2022]
Abstract
Interaction of photoinduced electron transfer (PET) based acridinedione dye (ADR 1) with amides like formamide, acetamide and dimethylformamide (DMF) were investigated by fluorescence spectral techniques. A fluorescence enhancement accompanied with a blue shift in the emission maximum was observed on the addition of amides to ADR 1 dye, which possess C(6)H(4)(p-OCH(3)) in the 9th position of the basic acridinedione ring. The extent of fluorescence enhancement and the blue shift in the emission maximum of ADR 1 dye is of the order of DMF > acetamide > formamide. DMF, which is more hydrophobic and less polar, results in a higher extent of fluorescence enhancement and a larger shift in the emission maximum towards the blue region. On the addition of amides, the ADR 1 dye prefers to orient towards a more hydrophobic phase surrounded by more number of amide molecules. The fluorescence enhancement of ADR 1 dye is attributed to the suppression of PET process occurring through space. The influence of the hydrophobic nature and the polarity of the amides on the excited state properties of acridinedione dyes are elucidated by steady-state and time resolved fluorescence measurements.
Collapse
Affiliation(s)
- R Kumaran
- National Centre for Ultrafast Processes, University of Madras, Taramani Campus, Chennai 600 113, India
| | | |
Collapse
|
8
|
Ashokkumar P, Ramakrishnan VT, Ramamurthy P. Head-to-tail intermolecular hydrogen bonding of OH and NH groups with fluoride. Chemphyschem 2011; 12:389-96. [PMID: 21254318 DOI: 10.1002/cphc.201000463] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Revised: 10/19/2010] [Indexed: 11/09/2022]
Abstract
To explore the anion-recognition ability of the phenolic hydroxyl group and the amino hydrogen, we synthesized three different acridinedione (ADD) based anion receptors, 1, 2 and 3, having OH, NH, and combination of OH and NH groups, respectively. Absorption, emission and (1)H NMR spectral studies revealed that receptor 1, having only a phenolic OH group, shows selective deprotonation of the hydroxyl proton towards F(-), which results in an "ON-OFF"-type signal in the fluorescence spectral studies. Receptor 2, which only has an amino hydrogen, also shows deprotonation of the amino hydrogen with F(-), whereas receptor 3 (having both OH and NH groups) shows head-to-tail intermolecular hydrogen bonding of OH and NH groups with F(-) prior to deprotonation. The observation of hydrogen bonding of the OH and NH groups in a combined solution of 1 and 2 with F(-) in a head-to-tail hetero-intermolecular fashion, and the absence of head-to-head and tail-to-tail intermolecular hydrogen bonding in 1 and 2 with F(-), prove that the difference in the acidity of the OH and NH protons leads to the formation of an intermolecular hydrogen-bonding complex with F(-) prior to deprotonation. The presence of this hydrogen-bonding complex was confirmed by absorption spectroscopy, 3D emission contour studies, and (1)H NMR titration.
Collapse
Affiliation(s)
- Pichandi Ashokkumar
- National Centre for Ultrafast Processes, University of Madras, Taramani Campus, Chennai-600 113, India
| | | | | |
Collapse
|
9
|
Ashokkumar P, Ramakrishnan VT, Ramamurthy P. Solvent-Controlled Metal Ion Binding Selectivity and Anion Interaction of the Acridinedione-Based Heteroditopic Host. J Phys Chem B 2010; 115:84-92. [DOI: 10.1021/jp107717z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- P. Ashokkumar
- National Centre for Ultrafast Processes, University of Madras, Taramani Campus, Chennai- 600 113, India
| | - V. T. Ramakrishnan
- National Centre for Ultrafast Processes, University of Madras, Taramani Campus, Chennai- 600 113, India
| | - P. Ramamurthy
- National Centre for Ultrafast Processes, University of Madras, Taramani Campus, Chennai- 600 113, India
| |
Collapse
|
10
|
Ashokkumar P, Ramakrishnan VT, Ramamurthy P. Fluorescence Spectroscopic Evidence for Hydrogen Bonding and Deprotonation Equilibrium between Fluoride and a Thiourea Derivative. Chemistry 2010; 16:13271-7. [DOI: 10.1002/chem.201000837] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
11
|
Velu R, Padma Malar E, Ramakrishnan VT, Ramamurthy P. Acridinedione-functionalized gold nanoparticles and model for the binding of 1,3-dithiol linked acridinedione on gold clusters. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.08.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|