1
|
El-Khouly ME, Khatab HA, Abdel-Shafi AA, Hammad SF. Acridinedione-phthalimide conjugates: Intramolecular electron transfer and singlet oxygen generation studies for optical and photodynamic therapy applications. Photochem Photobiol Sci 2024:10.1007/s43630-024-00603-9. [PMID: 38937393 DOI: 10.1007/s43630-024-00603-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Accepted: 06/10/2024] [Indexed: 06/29/2024]
Abstract
We reported herein the synthesis, characterization of hybrid conjugates composed of phthalimide (Phth) and acridine-1,8-diones (Acr) for optical and medical applications. For the synthetic procedure, a three-step synthetic strategy has been utilized. The optical properties of the examined 1,8-acridinedione-phthalimide connected molecules (AcrPhth 1-5) have been examined utilizing various spectroscopic techniques, e.g., steady-state absorption and fluorescence, and time-correlated single photon counting. The steady-state absorption studies showed that AcrPhth 1-5 absorbs the light in the UV and visible region. The fluorescence studies of AcrPhth 1-5 exhibited significant fluorescence quenching compared to the acridinedione control compounds (Acr 1-5) suggesting the occurrence of electron-transfer reactions from the electron donating acridinedione moiety (Acr) to the electron accepting phthalimide moiety (Phth). The rate and efficiency of the electron-transfer reactions were determined from the fluorescence lifetime measurements indicating the fast electron-transfer processes of the covalently connected AcrPhth 1-5 conjugates. Computational studies supported the intramolecular electron-transfer reaction of AcrPhth conjugates using ab initio B3LYP/6-311G methods. In the optimized structures, the HOMO was found to be entirely located on the Acr entity, while the LUMO was found to be entirely on the Phth entity. Further, the synthesized compounds were tested as photosensitizers for generating the singlet oxygen species, which is a key factor in the photodynamic therapy (PDT) applications. The nanosecond laser flash measurements enable us to detect the triplet-excited states of examined Acr and AcrPhth conjugates, determining the triplet quantum yields, and direct detecting the singlet oxygen in an accurate way. From this observation, the singlet quantum yields were found to be in the range of 0.12-0.27 (for Acr 1-5) and 0.07-0.19 (for AcrPhth 1-5 conjugates). The molecular docking studies revealed that compound AcrPhth 2 exhibited high binding affinity with for key genes (p53, TOP2B, p38, and EGFR) suggesting its potential as a targeted anticancer therapy.
Collapse
Affiliation(s)
- Mohamed E El-Khouly
- Nanoscience Program, Institute of Basic and Applied Sciences, Egypt-Japan University of Science and Technology (E-JUST), New Borg El-Arab City, Alexandria, Egypt.
| | - Hassan A Khatab
- Pharm D Program, Egypt-Japan University of Science and Technology (E-JUST), New Borg El-Arab City, Alexandria, Egypt
| | - Ayamn A Abdel-Shafi
- Department of Chemistry, Faculty of Science, Ain Shams University, 11566 Abbassia, Cairo, Egypt
| | - Sherif F Hammad
- Pharm D Program, Egypt-Japan University of Science and Technology (E-JUST), New Borg El-Arab City, Alexandria, Egypt
| |
Collapse
|
2
|
Tian ZY, Zhang CP. Visible-Light-Initiated Catalyst-Free Trifluoromethylselenolation of Arylsulfonium Salts with [Me4N][SeCF3]. Org Chem Front 2022. [DOI: 10.1039/d2qo00235c] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The redox potential gap between arylsulfonium salt and [Me4N][SeCF3] has been clearly disclosed by CV measurements. Construction of carbon-selenium bond by overcoming this gap without using catalysts and additives is...
Collapse
|
3
|
Anupurath S, Rajaraman V, Gunasekaran S, Krishnan A, Sreedevi SM, Vinod SM, Dakshinamoorthi BM, Rajendran K. Electrochemical Investigation and Molecular Docking Techniques on the Interaction of Acridinedione Dyes with Water-Soluble Nonfluorophoric Simple Amino Acids. ACS OMEGA 2021; 6:30932-30941. [PMID: 34841136 PMCID: PMC8613813 DOI: 10.1021/acsomega.1c03172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
Electrochemical studies of resorcinol-based acridinedione (AD) dyes with nonfluorophoric simple amino acids, glycine, alanine, and valine, were carried out in water. AD probes are classified into photoinduced electron transfer (PET) and non-PET-based dyes, wherein the electrochemical properties and photophysical and photochemical behavior vary significantly based on the nature of substituent groups and the nature of the solute. The oxidation potential of PET dye (ADR1) to that of non-PET-based dye (ADR2) differs significantly such that the addition of amino acids results in a shift of the oxidation peak to a less positive potential and the reduction peak to a lesser negative potential. The extent of shift of oxidation and reduction potential in PET dye is more pronounced than that of non-PET dye on the addition of valine rather than glycine. The variation in the shift is attributed to the presence of an electron-donating moiety (OCH3) group in the ninth position of ADR1 dye. Consequently, the quenching of fluorescence is observed in ADR2 with non fluorophoric amino acids that are authenticated by the shift of the anodic and cathodic peaks toward a lesser positive potential. Molecular docking (MD) studies of PET and non-PET dye with amino acids portray that neither hydrophobic interactions nor electrostatic or weak interactions such as van der Waals and pi-pi interactions govern the electrochemical nature of dye on the addition of amino acids. Furthermore, the formation of a conventional hydrogen bond between dye and amino acid is established from MD studies. The existence of dye-water-amino acid competitive hydrogen-bonding interactions is presumably well-oriented throughout the aqueous phase as observed through photophysical studies which support our electrochemical investigation.
Collapse
Affiliation(s)
- Sumita Anupurath
- Department
of Chemistry, Anna Adarsh College for Women, University of Madras, Chennai, Tamil Nadu 600 040, India
| | - Vasanthi Rajaraman
- P.G
and Research Department of Chemistry, Dwaraka Doss Goverdhan Doss
Vaishnav College (Autonomous), University
of Madras, Chennai, Tamil Nadu 600 106, India
| | - Shoba Gunasekaran
- Department
of Biotechnology, Dwaraka Doss Goverdhan Doss Vaishnav (Autonomous), University of Madras, Chennai, Tamil Nadu 600
106, India
| | - Anju Krishnan
- Department
of Chemistry, Anna Adarsh College for Women, University of Madras, Chennai, Tamil Nadu 600 040, India
| | - Sangeetha Murugan Sreedevi
- P.G
and Research Department of Chemistry, Dwaraka Doss Goverdhan Doss
Vaishnav College (Autonomous), University
of Madras, Chennai, Tamil Nadu 600 106, India
| | - Seba Merin Vinod
- P.G
and Research Department of Chemistry, Dwaraka Doss Goverdhan Doss
Vaishnav College (Autonomous), University
of Madras, Chennai, Tamil Nadu 600 106, India
| | | | - Kumaran Rajendran
- Department
of Biotechnology, Dwaraka Doss Goverdhan Doss Vaishnav (Autonomous), University of Madras, Chennai, Tamil Nadu 600
106, India
| |
Collapse
|
4
|
Jia X, Han W, Xue T, Zhao D, Li X, Nie J, Wang T. Diphenyl sulfone-based A–π-D–π-A dyes as efficient initiators for one-photon and two-photon initiated polymerization. Polym Chem 2019. [DOI: 10.1039/c8py01778f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Diphenyl sulfone-based symmetrical A–π-D–π-A dyes as efficient initiators for one-photon and two-photon initiated polymerization.
Collapse
Affiliation(s)
- Xiaoqin Jia
- Department of Organic Chemistry
- College of Science
- Beijing University of Chemistry Technology
- Beijing
- People's Republic of China
| | - Weixiang Han
- Department of Organic Chemistry
- College of Science
- Beijing University of Chemistry Technology
- Beijing
- People's Republic of China
| | - Tanlong Xue
- Department of Organic Chemistry
- College of Science
- Beijing University of Chemistry Technology
- Beijing
- People's Republic of China
| | - Di Zhao
- Department of Organic Chemistry
- College of Science
- Beijing University of Chemistry Technology
- Beijing
- People's Republic of China
| | - Xiuyan Li
- College of Materials Science and Engineering
- Beijing Institute of Fashion Technology
- Beijing
- People's Republic of China
| | - Jun Nie
- Department of Organic Chemistry
- College of Science
- Beijing University of Chemistry Technology
- Beijing
- People's Republic of China
| | - Tao Wang
- Department of Organic Chemistry
- College of Science
- Beijing University of Chemistry Technology
- Beijing
- People's Republic of China
| |
Collapse
|
5
|
Shi S, Croutxé-Barghorn C, Allonas X. Photoinitiating systems for cationic photopolymerization: Ongoing push toward long wavelengths and low light intensities. Prog Polym Sci 2017. [DOI: 10.1016/j.progpolymsci.2016.09.007] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
6
|
Kabatc J, Ortyl J, Kostrzewska K. New kinetic and mechanistic aspects of photosensitization of iodonium salts in photopolymerization of acrylates. RSC Adv 2017. [DOI: 10.1039/c7ra05978g] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
New kinetic and mechanistic aspects of photosensitization of iodonium salts in photopolymerization of acrylates.
Collapse
Affiliation(s)
- Janina Kabatc
- UTP
- University of Science and Technology
- Faculty of Chemical Technology and Engineering
- 85-326 Bydgoszcz
- Poland
| | - Joanna Ortyl
- Cracow University of Technology
- Faculty of Chemical Engineering and Technology
- 31-155 Cracow
- Poland
| | - Katarzyna Kostrzewska
- UTP
- University of Science and Technology
- Faculty of Chemical Technology and Engineering
- 85-326 Bydgoszcz
- Poland
| |
Collapse
|
7
|
Kostrzewska K, Ortyl J, Dobosz R, Kabatc J. Squarylium dye and onium salts as highly sensitive photoradical generators for blue light. Polym Chem 2017. [DOI: 10.1039/c7py00621g] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2-Ethyl-2-(hydroxymethyl)-1,3-propanediol triacrylate was polymerized in the presence of squarylium dye and various onium salts.
Collapse
Affiliation(s)
- Katarzyna Kostrzewska
- UTP University of Science and Technology
- Faculty of Chemical Technology and Engineering
- 85-326 Bydgoszcz
- Poland
| | - Joanna Ortyl
- Cracow University of Technology
- Faculty of Chemical Engineering and Technology
- 31-155 Cracow
- Poland
| | - Robert Dobosz
- UTP University of Science and Technology
- Faculty of Chemical Technology and Engineering
- 85-326 Bydgoszcz
- Poland
| | - Janina Kabatc
- UTP University of Science and Technology
- Faculty of Chemical Technology and Engineering
- 85-326 Bydgoszcz
- Poland
| |
Collapse
|
8
|
Tehfe MA, Dumur F, Contal E, Graff B, Gigmes D, Fouassier JP, Lalevée J. Novel Highly Efficient Organophotocatalysts: Truxene-Acridine-1,8-diones as Photoinitiators of Polymerization. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300362] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mohamad-Ali Tehfe
- Institut de Science des Matériaux de Mulhouse; IS2M - UMR 7361 - UHA; 15, Rue Jean Starcky 68057 Mulhouse Cedex France
| | - Frédéric Dumur
- Aix-Marseille Université, CNRS; Institut de Chimie Radicalaire; UMR 7273 F-13397 Marseille France
| | - Emmanuel Contal
- Aix-Marseille Université, CNRS; Institut de Chimie Radicalaire; UMR 7273 F-13397 Marseille France
| | - Bernadette Graff
- Institut de Science des Matériaux de Mulhouse; IS2M - UMR 7361 - UHA; 15, Rue Jean Starcky 68057 Mulhouse Cedex France
| | - Didier Gigmes
- Aix-Marseille Université, CNRS; Institut de Chimie Radicalaire; UMR 7273 F-13397 Marseille France
| | | | - Jacques Lalevée
- Institut de Science des Matériaux de Mulhouse; IS2M - UMR 7361 - UHA; 15, Rue Jean Starcky 68057 Mulhouse Cedex France
| |
Collapse
|
9
|
Xiao P, Dumur F, Tehfe MA, Graff B, Gigmes D, Fouassier JP, Lalevée J. Acridinediones: Effect of Substituents on Their Photoinitiating Abilities in Radical and Cationic Photopolymerization. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300363] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pu Xiao
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361, UHA, 15; Rue Jean Starcky Mulhouse Cedex 68057 France
| | - Frédéric Dumur
- Institut de Chimie Radicalaire ICR - UMR CNRS 7273; Aix-Marseille Université; Equipe CROPS, Case 542, Avenue Escadrille Normandie-Niemen 13397 Marseille Cedex 20 France
| | - Mohamad-Ali Tehfe
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361, UHA, 15; Rue Jean Starcky Mulhouse Cedex 68057 France
| | - Bernadette Graff
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361, UHA, 15; Rue Jean Starcky Mulhouse Cedex 68057 France
| | - Didier Gigmes
- Institut de Chimie Radicalaire ICR - UMR CNRS 7273; Aix-Marseille Université; Equipe CROPS, Case 542, Avenue Escadrille Normandie-Niemen 13397 Marseille Cedex 20 France
| | | | - Jacques Lalevée
- Institut de Science des Matériaux de Mulhouse IS2M; UMR CNRS 7361, UHA, 15; Rue Jean Starcky Mulhouse Cedex 68057 France
| |
Collapse
|
10
|
Santos WG, Schmitt CC, Neumann MG. Photochemistry of Tetraphenyldiboroxane and its Use as Photopolymerization Coinitiator,. Photochem Photobiol 2013; 89:1362-7. [DOI: 10.1111/php.12084] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 04/08/2013] [Indexed: 12/26/2022]
Affiliation(s)
- Willy G. Santos
- Instituto de Química de São Carlos; Universidade de São Paulo; São Carlos SP Brazil
| | - Carla C. Schmitt
- Instituto de Química de São Carlos; Universidade de São Paulo; São Carlos SP Brazil
| | - Miguel G. Neumann
- Instituto de Química de São Carlos; Universidade de São Paulo; São Carlos SP Brazil
| |
Collapse
|
11
|
Xiao P, Dumur F, Tehfe MA, Graff B, Gigmes D, Fouassier JP, Lalevée J. Difunctional acridinediones as photoinitiators of polymerization under UV and visible lights: Structural effects. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.04.055] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
12
|
|
13
|
Bulut U, Yilmaz S, Yigitsoy B, Toppare L. Long Wavelength Photosensitizers for Diaryliodonium Salts Based on the 2-Benzyl-2H-benzo[d][1,2,3]triazole Skeleton. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2012. [DOI: 10.1080/10601325.2012.672060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
14
|
Crivello JV, Bulut U. Photoactivated cationic ring-opening frontal polymerizations of oxetanes. Des Monomers Polym 2012. [DOI: 10.1163/156855505774597803] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
|
15
|
Fluoflavin dyes as electron transfer photosensitizers for onium salt induced cationic photopolymerization. J Photochem Photobiol A Chem 2010. [DOI: 10.1016/j.jphotochem.2010.03.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
16
|
Sakho M, Allonas X, Ley C. Sensitization of Thianthrenium Salt for Cationic Polymerization of Epoxides. J PHOTOPOLYM SCI TEC 2010. [DOI: 10.2494/photopolymer.23.771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
17
|
Podsiadły R. 12H-Quinoxalino[2,3-b][1,4]benzothiazine derivatives as novel visible photosensitizers in cationic photopolymerization. J Photochem Photobiol A Chem 2009. [DOI: 10.1016/j.jphotochem.2009.09.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
18
|
Keitz BK, Grubbs RH. A Tandem Approach to Photoactivated Olefin Metathesis: Combining a Photoacid Generator with an Acid Activated Catalyst. J Am Chem Soc 2009; 131:2038-9. [DOI: 10.1021/ja807187u] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Benjamin K. Keitz
- Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125
| | - Robert H. Grubbs
- Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125
| |
Collapse
|
19
|
Photoinduced electron transfer reactions of pyrylium derivatives with organic sulfides in acetonitrile. J Photochem Photobiol A Chem 2009. [DOI: 10.1016/j.jphotochem.2008.10.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
20
|
|
21
|
Gómez ML, Montejano HA, Previtali CM. Excited states interaction of polycyclic aromatic hydrocarbons with diphenyliodonium chloride. J Photochem Photobiol A Chem 2008. [DOI: 10.1016/j.jphotochem.2007.11.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
22
|
Tsuchimura T, Ishiji Y, Shimada K, Matshushita T, Aoai T. The Photopolymer Science and Technology Award. J PHOTOPOLYM SCI TEC 2008. [DOI: 10.2494/photopolymer.21.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
23
|
|
24
|
Popielarz R, Vogt O. Effect of coinitiator type on initiation efficiency of two-component photoinitiator systems based on Eosin. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22688] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
25
|
Crivello JV. Applications for Photoacid Generation in Photoimaging and Nanotechnology. J PHOTOPOLYM SCI TEC 2007. [DOI: 10.2494/photopolymer.20.599] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- James V. Crivello
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute
| |
Collapse
|
26
|
Crivello JV. Synergistic effects in hybrid free radical/cationic photopolymerizations. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/pola.22126] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
27
|
Crivello JV. Design and synthesis of multifunctional glycidyl ethers that undergo frontal polymerization. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/pola.21761] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
28
|
Crivello J. Investigation of the photoactivated frontal polymerization of oxetanes using optical pyrometry. POLYMER 2005. [DOI: 10.1016/j.polymer.2005.10.087] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
29
|
Falk B, Zonca MR, Crivello JV. Modification of photoinitiated cationic epoxide polymerizations by sulfides. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/pola.20726] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
30
|
Bulut U, Crivello JV. Investigation of the Reactivity of Epoxide Monomers in Photoinitiated Cationic Polymerization. Macromolecules 2005. [DOI: 10.1021/ma050106k] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Umut Bulut
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180
| | - James V. Crivello
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180
| |
Collapse
|
31
|
|
32
|
Bulut U, Crivello JV. Reactivity of oxetane monomers in photoinitiated cationic polymerization. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/pola.20723] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
33
|
Crivello JV, Falk B, Zonca MR. Study of cationic ring-opening photopolymerizations using optical pyrometry. J Appl Polym Sci 2004. [DOI: 10.1002/app.20317] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
34
|
Crivello JV, Falk B, Zonca MR. Photoinduced cationic ring-opening frontal polymerizations of oxetanes and oxiranes. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/pola.20012] [Citation(s) in RCA: 90] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
35
|
Crivello JV, Ahn J. Photoinduced and thermally induced cationic polymerizations usingS,S-dialkyl-S-(3,5-dimethylhydroxyphenyl)sulfonium salts. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/pola.10800] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
36
|
Karunakaran V, Ramamurthy P, Josephrajan T, Ramakrishnan VT. Solvent effects and photophysical studies of a new class of acridine(1,8)dione dyes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2002; 58:1443-1451. [PMID: 12083667 DOI: 10.1016/s1386-1425(01)00599-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Spectroscopic properties of a new family of acridinedione dyes are reported. The absorption and fluorescence spectra of the different substituted acridinediones have been recorded in different solvents and the difference in the dipole moment between ground and excited state has been obtained by solvatochromic shift method. The value of the Onsager cavity radius was calculated from the total surface area using software PCMODEL. Fluorescence quantum yield and fluorescence lifetime were determined. Radiative and non-radiative constants have been calculated. The triplet-triplet absorption maxima and triplet lifetime show variation depending on the substitution.
Collapse
Affiliation(s)
- V Karunakaran
- National Centre for Ultrafast Processes, University of Madras, Chennai, India
| | | | | | | |
Collapse
|