CHEM01200604004 Shri Sanyasinaidu Boddu - Homi Bhabha ...

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List of publications in journals 1. Luminescence studies on SbPO 4 :Ln 3+ (Ln = Eu, Ce, Tb) nanoparticles and nanoribbons. B. S. Naidu, V. Sudarsan and R. K. Vatsa J. Nanosci. Nanotechnol., 9 (2009) 2997. 2. Shape selective nature of the luminescent centers and the structural properties of Sb 2 O 3 . B. S. Naidu, M. Pandey, V. Sudarsan, R.K.Vatsa and R. Tewari Chem. Phys. Lett., 474 (2009) 180. 3. Interaction of Sb 3+ ions with Eu 3+ ions during the room temperature synthesis of luminescent Sb 2 O 3 nanorods. B. S. Naidu, M. Pandey, R. Tewari, V. Sudarsan, R. K. Vatsa J. Lumin., 131 (2011) 177. 4. Investigations of Ce 3+ co-doped SbPO 4 :Tb 3+ nanoribbons and nanoparticles by vibrational and photoluminescence spectroscopy B. S. Naidu, M. Pandey, V. Sudarsan, J. Ghattak, R. K. Vatsa. J. Nanosci. Nanotechnol., 11 (2011) 3180. 5. Lanthanide ions assisted structural collapse of layered GaOOH lattice. B. S. Naidu, M. Pandey, J. Nuwad, V. Sudarsan, R. K. Vatsa, R. J. Kshirsagar, C. G. S. Pillai Inorg. Chem., 50 (2011) 4463. 6. GaPO 4 nanoparticles with Eu 3+ ions at their surface: Evidence from luminescence and 31 P MAS NMR techniques B. S. Naidu, B. Vishwanadh, V. Sudarsan, R. K. Vatsa J. Am. Ceram. Soc., (in press). 7. Effect of lanthanide ion (Ln) concentration on the size and shape of Ga 2 O 3 :Ln nanomaterials. 202
B. S. Naidu, B. Vishwanadh, V. Sudarsan, R. K. Vatsa (Manuscript under preparation) 8. Synthesis and characterisation of solid solutions of BiPO 4 and LnPO 4 in nano size diemsnions. B. S. Naidu, B. Vishwanadh, V. Sudarsan, R. K. Vatsa (Manuscript under preparation) 9. Tunable blue emission from ZnGa 2 O 4 nanoparticles by In 3+ doping B. S. Naidu, P.V Satyam, V. Sudarsan, R. K. Vatsa (Manuscript under preparation) 10. Room temperature synthesis of multicolour emitting dispersiable CaWO 4 :Ln 3+ (Ln = Eu, Tb, Sm, Dy) nanoparticles B. S. Naidu, B. Vishwanadh, V. Sudarsan, R. K. Vatsa (Manuscript under preparation) Publications in Conferences proceedings Poster presentations: 1. Surface modifctions on the extent of energy transfer between Ce 3+ and Tb 3+ ions in SbPO 4 :Ln 3+ (Ln = Ce, Tb) nanoparticles and nanoribbons B. S. Naidu, V. Sudarsan, R. K. Vatsa 2 nd DAE-BRNS International symposium on material chemistry (ISMC-2008), December 2-6, 2008, BARC, Mumbai, pp.192. 2. In 3+ doped ZnGa 2 O 4 nanoparticles with bright blue light emission B. S. Naidu, V. Sudarsan, R. K. Vatsa 2 nd DAE-BRNS International symposium on material chemistry (ISMC-2008), December 2-6, 2008, BARC, Mumbai, pp.191. 203
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SYNTHESIS AND CHARACTERIZATION OF L
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STATEMENT BY AUTHOR This dissertati
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Dedicated to ……… My beloved b
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also thankful to all the members of
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2.3 Synthesis of binary oxide nanom
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CHAPTER 5: Zinc Gallate ...........
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imaging, scintillators, lasers, etc
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morphology by heating at 500 and 90
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nanoparticles having hexagonal stru
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100°C and 185°C, respectively in
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into poly methyl methacryllate (PMM
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3. N. M. Dimitrijevic, Z. V. Saponj
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Fig.13: Fig.14: (a) Simplified ray
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Eu 3+ ions after heat treatment at
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615 nm Fig.50: FT-IR patterns (a) a
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area electron diffraction pattern a
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different amounts of Eu 3+ . Fig.86
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and 545 nm, respectively. Fig.106:
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List of Tables: Table 1: Variation
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CHAPTER 1: Introduction 1.1 Histori
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Rods, cylinders, wires and tubes ar
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must be supersaturated either by di
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- + - + charge stabilized nanoparti
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exothermic reaction between the met
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constant, ħ is h/2π, e is the ele
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these platinum complexes have been
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(IR), visible and ultra-violet (UV)
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in Ce 3+ , Pr 3+ , Tb 3+ and CT abs
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assisted by lattice phonons of appr
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decay-time reduction is much easier
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nanocrystals is shown in Fig.10 [58
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depends strongly on the nature of t
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corresponding emission and excitati
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doped nanomaterials of the above me
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will be formed and subsequently it
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Eu 3+ ions were also subjected to s
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transferred into a two-necked RB fl
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Where λ is the wavelength of X-ray
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Micro-structural characterization b
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electrons (i.e. diffraction mode).
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diffraction spots. By tilting a cry
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surface. The contact mode can obtai
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three types lines in the scattered
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solids tend to be broadened because
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sample fluoresce. The fluorescent l
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pulse frequency) as excitation sour
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Lanthanide ions doped Ga 2 O 3 nano
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atoms at three corners and the lone
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Figure 19 (a-d) shows SEM images of
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Based on these results, it can be i
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almost normal to the equatorial pla
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Table 2. Summary of important modes
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systematic disappearance of these t
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comparison, Eu 3+ ions alone in wat
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the samples, suggesting that Eu 3+
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These inferences are further substa
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Similar DTA peaks have been reporte
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GaOOH samples doped with different
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The cell parameters increases with
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strong emission compared to corresp
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curves are shown in Fig.39. Lifetim
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Similar results are also observed f
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intensity of XRD peaks correspond t
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compared to the bulk material and a
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is almost 1½ times that of peak B1
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3.8 Interaction of Eu 3+ ions with
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The spectrum shows strong emission
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The decay curves are found to be bi
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As prepared undoped Sb 2 O 3 sample
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Intensity(arb.units) 1.0 0.8 0.6 0.
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3+ having surface lanthanide ions.
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diffraction patterns from the GaPO
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5 D 0 7 F 2 level to 7 F 7 7 1 , F
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The second possibility is the excha
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chemical shift anisotropy is much h
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not have strong interaction with th
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(001) (110) (011) (101) (020) (101)
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growth centre compared to higher vi
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observed after excitation at 250 an
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3+ 3+ concentration quenching. Tb l
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Compared to the selected area elect
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lattice. Lanthanide ions occupying
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obtained after 275 nm excitation is
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The luminescence dynamics associate
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that the broad peak can be resolved
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espectively. Value of this integral
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ethylene glycol moiety (stabilizing
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Room temperature and 100°C synthes
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heavier metal ion as compared to La
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Similar studies were also carried o
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3+ 3+ faster decay component is ass
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the other hand the Eu 3+ lifetime h
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3+ 4.4.8 Luminescence studies on Sm
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CHAPTER 5: Zinc gallate (ZnGa 2 O 4
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Page 197 and 198: value. The lattice parameters calcu
Page 199 and 200: Quantum yield of the blue emission
Page 201 and 202: 5.5.2. Eu 3+ doped ZnGa 1.5 In 0.5
Page 203 and 204: CHAPTER 6: Tungstates [MWO 4 (M = C
Page 205 and 206: ionic radius of the metal cation ca
Page 207 and 208: lattice. Asymmetric ratio is ~ 12 f
Page 209 and 210: 700 Intensity (arb.units) 600 λ ex
Page 211 and 212: Intensity (arb.units) 25000 20000 1
Page 213 and 214: Strong green emission has been obse
Page 215 and 216: consists of strong band at 255 nm a
Page 217 and 218: peak can be attributed to the cryst
Page 219 and 220: nm) is observed from Er 3+ doped Ga
Page 221 and 222: and Dy 3+ doped CaWO 4 nanoparticle
Page 223 and 224: REFERENCES 1. D. J. Barber, I. C. F
Page 225 and 226: 32. K. A. Gschneidner, Jr., L. Eyri
Page 227 and 228: 65. Z. Deng, F. Tang, D. Chen, X. M
Page 229 and 230: 100. A. Rouanel, J. J. Serra, K. Al
Page 231 and 232: 130. F. Li, W. Jianhuai, L. Jiongti
Page 233 and 234: 166. L. Fu, Z. Liu, Y. Liu, B. Han,
Page 235 and 236: 205. R. Sasikala, V. Sudarsan, C. S
Page 237 and 238: 238. E. Oldfield, R. A. Kinsey, K.
Page 239: 271. B. G. Hyde, S. Andersson, ”I
Page 243: 9. Room temperature synthesis of mu
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CHEM01200604004 Shri Sanyasinaidu Boddu - Homi Bhabha ...

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