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J S, P R, S R. Solvent free synthesis and spectral analysis of 2,4-dimethyl-6-(1-phenyl-1H-benzimidazol-2-yl)phenol: on/off fluorescence, inter and intramolecular hydrogen bonding. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2076697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Sivapriya J
- Department of Chemistry, St. Joseph’s Institute of Technology, Chennai, Tamilnadu, India
| | - Ravichandran P
- Department of Chemical Engineering, St. Joseph’s Institute of Technology, Chennai, Tamilnadu, India
| | - Renganathan S
- Department of Biotechnology, Anna University, Chennai, Tamil Nadu, India
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2
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Jayamoorthy K, Saravanan P, Rao VS, Rajagopalan NR, Rengarajan S, Nisha P. Carbon nanotubes functionalized with newly synthesized benzimidazole derivative for corrosion inhibition on the nickel alloy surface in a sulfuric acidic medium. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2021.1984534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- K. Jayamoorthy
- Department of Chemistry, St. Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - P. Saravanan
- Department of Chemistry, St. Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - Vaddi Seshagiri Rao
- Department of Mechanical Engineering, St. Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - N. R. Rajagopalan
- Department of Chemistry, St. Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - Sathish Rengarajan
- Department of Mechanical Engineering, St. Joseph’s College of Engineering, Chennai, Tamil Nadu, India
| | - P. Nisha
- Department of Electrical and Electronics Engineering, Easwari Engineering College, Chennai, Tamil Nadu, India
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3
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K. I. D, K. J, Subash B, Magesan P, Ujam OT, Zhang X, Kadambary K. Binding interaction of 5-amino-2-mercaptobenzimidazole with Au-TiO 2: inhibition of switch-on fluorescence. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2021.1952264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Dhanalekshmi K. I.
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing, China
| | - Jayamoorthy K.
- Department of Chemistry, St. Joseph’s College of Engineering, Chennai, Tamilnadu, India
| | - B. Subash
- Department of Chemistry, St. Joseph’s College of Engineering, Chennai, Tamilnadu, India
| | - P. Magesan
- Department of Chemistry, Bharath Institute of Higher Education & Research, Bharath University, Chennai, Tamilnadu, India
| | - Oguejiofo T. Ujam
- Department of Pure Industrial Chemistry, University of Nigeria, Nsukka, Enugu state, Nigeria
| | - Xiang Zhang
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing, China
| | - K. Kadambary
- Department of Chemistry, C. Kandaswami Naidu College for Women, Cuddalore, Tamilnadu, India
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Nisha P, Suresh S, Jayamoorthy K, Dhanalekshmi KI, Ravichandran C. Synthesis, spectral, thermal studies and dielectric behavior of functionalized TiO2-loaded diglycidyl epoxy nanocomposite film. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03362-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Suresh S, Karthikeyan S, Jayamoorthy K. Spectral investigations to the effect of bulk and nano ZnO on peanut plant leaves. KARBALA INTERNATIONAL JOURNAL OF MODERN SCIENCE 2016. [DOI: 10.1016/j.kijoms.2016.01.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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6
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Fused Methoxynaphthyl Phenanthrimidazole Semiconductors as Functional Layer in High Efficient OLEDs. J Fluoresc 2015; 26:307-16. [PMID: 26585347 DOI: 10.1007/s10895-015-1715-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 10/28/2015] [Indexed: 10/22/2022]
Abstract
Efficient hole transport materials based on novel fused methoxynaphthyl phenanthrimidazole core structure were synthesised and characterized. Their device performances in phosphorescent organic light emitting diodes were investigated. The high thermal stability in combination with the reversible oxidation process made promising candidates as hole-transporting materials for organic light-emitting devices. Highly efficient Alq3-based organic light emitting devices have been developed using phenanthrimidazoles as functional layers between NPB [4,4-bis(N-(1-naphthyl)-N-phenylamino)biphenyl] and Alq3 [tris(8-hydroxyquinoline)aluminium] layers. Using the device of ITO/NPB/4/Alq3/LiF/Al, a maximum luminous efficiency of 5.99 cd A(-1) was obtained with a maximum brightness of 40,623 cd m(-2) and a power efficiency of 5.25 lm W(-1).
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Yuvakkumar R, Hong SI. Structural, compositional and textural properties of monoclinic α-Bi₂O₃ nanocrystals. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 144:281-286. [PMID: 25770823 DOI: 10.1016/j.saa.2015.02.093] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 02/10/2015] [Accepted: 02/19/2015] [Indexed: 06/04/2023]
Abstract
Perfect α-Bi2O3 nanocrystals were successfully synthesized via green synthesis method. X-ray diffraction studies clearly revealed a single phase α-Bi2O3 nanocrystal without any secondary phase. The strong XPS peaks observed at 160 and 165 eV were assigned to Bi4f5/2 and Bi4f7/2 and clearly revealed Bi(3+) valence states of bismuth ions. Photoluminescence spectra revealed the perfect α-Bi2O3 crystal nature without having inter band transitions between defects, impurity and different valence states of bismuth ions. Out of thirty expected modes, the symmetry assignments of Raman bands correlated to Bg(4), Ag(5), Bg(5), Bg(6), Ag(7), Ag(8), Ag(9), Ag(10), Ag(12) and Ag(14) modes revealed perfect α-Bi2O3 nanocrystals. Transmission electron microscopy studies combined with a selected area electron diffraction pattern recorded on α-Bi2O3 nanocrystals show monoclinic structure preferential orientation with sizes approximately 200 nm in diameters and 500 nm in length.
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Affiliation(s)
- R Yuvakkumar
- Department of Nanomaterials Engineering, Chungnam National University, Daejeon 305-764, South Korea.
| | - Sun Ig Hong
- Department of Nanomaterials Engineering, Chungnam National University, Daejeon 305-764, South Korea.
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Jayabharathi J, Karunakaran C, Kalaiarasi V, Ramanathan P. Donor-acceptor binding interaction of 1-(naphthalene-1-yl)-2,4,5-triphenyl-1H-imidazole with semiconductor nanomaterials. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 137:333-337. [PMID: 25228042 DOI: 10.1016/j.saa.2014.08.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 08/08/2014] [Accepted: 08/23/2014] [Indexed: 06/03/2023]
Abstract
The dynamics of photoinduced electron injection from 1-(naphthalene-1-yl)-2,4,5-triphenyl-1H-imidazole (NTI) to pristine ZnO, Mn-doped TiO2 and BaTiO3 nanoparticles have been studied by absorption, fluorescence and lifetime spectroscopic methods. Both the absorption and fluorescence results suggest the association between the nanoparticles and NTI. The calculated free energy change (ΔGet) confirms the electron injection from NTI to nano semiconductors. The critical energy transfer distance between NTI and the nanoparticles have been deduced. The emission of NTI is enhanced by pristine ZnO and quenched by Mn-doped TiO2 and BaTiO3 nanoparticles which are likely due to change of LUMO and HOMO levels of NTI on its association with nano semiconductors. The strong adsorption of the NTI on the surface of ZnO nanocrystals is likely due to the chemical affinity of the nitrogen atom of the NTI to the zinc ion on the surface of nanocrystals. Electron injection from photoexcited NTI to the CB(S(∗)→S(+)+eCB(-)) is likely to be the reason for the fluorescence enhancement.
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Affiliation(s)
- J Jayabharathi
- Department of Chemistry, Annamalai University, Annamalainagar 608002, Tamil Nadu, India.
| | - C Karunakaran
- Department of Chemistry, Annamalai University, Annamalainagar 608002, Tamil Nadu, India
| | - V Kalaiarasi
- Department of Chemistry, Annamalai University, Annamalainagar 608002, Tamil Nadu, India
| | - P Ramanathan
- Department of Chemistry, Annamalai University, Annamalainagar 608002, Tamil Nadu, India
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Jayabharathi J, JebaSingh I, Arunpandiyan A, Karunakaran C. Turn-off of fluorescence of styryl phenanthrimidazole on doping ZnO nanoparticles with Ce(3+). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 135:264-269. [PMID: 25078460 DOI: 10.1016/j.saa.2014.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Revised: 06/13/2014] [Accepted: 07/02/2014] [Indexed: 06/03/2023]
Abstract
ZnO nanoparticles were doped with Ce(3+) by sol-gel synthesis and characterized by high-resolution scanning electron microscopy (HR-SEM), powder X-ray diffraction (XRD) and UV-visible diffuse reflectance (DRS) and photoluminescence (PL) spectroscopies. The dynamics of photoinduced electron injection from styryl phenanthrimidazole to Ce(3+)-doped ZnO nanoparticles has been studied by absorption, fluorescence and lifetime spectroscopic methods. Both the absorption and fluorescence quenching results suggest association between Ce(3+)-doped ZnO and the phenanthrimidazole. The free energy change (ΔGet) for electron injection has been calculated. The critical energy transfer distance between the phenanthrimidazole and Ce(3+)-doped ZnO nanoparticles has been deduced. In contrast to our earlier observation of enhancement of fluorescence of the phenanthrimidazole by ZnO nanoparticles, doping ZnO with Ce(3+) turns off its fluorescence. These findings provide a method to test the presence of Ce(3+) in ZnO nanocrystals.
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Affiliation(s)
- J Jayabharathi
- Department of Chemistry, Annamalai University, Annamalainagar 608002, Tamil Nadu, India
| | - I JebaSingh
- Department of Chemistry, Annamalai University, Annamalainagar 608002, Tamil Nadu, India
| | - A Arunpandiyan
- Department of Chemistry, Annamalai University, Annamalainagar 608002, Tamil Nadu, India
| | - C Karunakaran
- Department of Chemistry, Annamalai University, Annamalainagar 608002, Tamil Nadu, India.
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Jayabharathi J, Ramanathan P, Thanikachalam V. Synthesis and optical properties of phenanthromidazole derivatives for organic electroluminescent devices. NEW J CHEM 2015. [DOI: 10.1039/c4nj01515k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The external quantum efficiency roll-off may be due to triplet–triplet annihilation (TTA) and triplet–polaron annihilation (TPA).
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Spectroscopic Studies on Photoelectron Transfer from 2-(furan-2-yl)-1-phenyl-1H-phenanthro[9,10-d]imidazole to ZnO, Cu—doped ZnO and Ag—doped ZnO. J Fluoresc 2014; 24:1447-55. [DOI: 10.1007/s10895-014-1428-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 07/07/2014] [Indexed: 10/24/2022]
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Jayabharathi J, Karunakaran C, Thanikachalam V, Ramanathan P. Binding and fluorescence enhancing behaviour of phenanthrimidazole with different phases of TiO2. NEW J CHEM 2014. [DOI: 10.1039/c4nj00610k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Thanikachalam V, Arunpandiyan A, Jayabharathi J, Karunakaran C, Ramanathan P. Nano rutile TiO2 catalysed synthesis of (E)-4-(2-(1-(4-chlorophenyl)-1H-phenanthro[9,10-d]imidazol-2-yl)vinyl)-N,N-dimethylaniline and its interaction with super paramagnetic nanoparticles. RSC Adv 2014. [DOI: 10.1039/c4ra10686e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synthesis of (E)-4-(2-(1-(4-chlorophenyl)-1H-phenanthro[9,10-d]imidazol-2-yl)vinyl)-N,N-dimethylaniline (CPPIVI) has been carried out using TiO2 (R) as catalyst under solvent free conditions and characterized by NMR spectral studies.
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Affiliation(s)
- V. Thanikachalam
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
| | - A. Arunpandiyan
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
| | - J. Jayabharathi
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
| | - C. Karunakaran
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
| | - P. Ramanathan
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
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Jayabharathi J, Karunakaran C, Arunpandiyan A, Vinayagamoorthy P. Styryl phenanthrimidazole-fluorescence switched on by core/shell BaTiO3/ZnO and Mn-doped TiO2/ZnO nanospheres and switched off by the core nanoparticles. RSC Adv 2014. [DOI: 10.1039/c4ra10303c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Photoelectron transfer to core/shell Mn–TiO2/ZnO and BaTiO3/ZnO nanospheres. Enhanced absorbance because of binding with nanosemiconductors. Enhanced emission due to charge injection from the excited ligand to CB of ZnO.
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Affiliation(s)
- J. Jayabharathi
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
| | - C. Karunakaran
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
| | - A. Arunpandiyan
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
| | - P. Vinayagamoorthy
- Department of Chemistry
- Annamalai University
- Annamalainagar 608 002, India
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