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Nanoscale, ISSN 2040-3364, 01/2018, Volume 10, Issue 47, pp. 22237 - 22251
The most common yellow phosphor for wLEDs, Y3Al5O12:Ce3+ (YAG:Ce3+), suffers from a deficiency of red in its spectral content of light. In this paper, a new... 
Heat treatment | Dyes | Luminescence | Photoluminescence | Cerium | Fluorescence | Embedding | Electroluminescence | Silicon dioxide | Yttrium-aluminum garnet | Emission spectra | Epoxy resins | Optical properties | Radiative transfer | Oxidation | Excitation spectra | Excitation | Absorption spectra | Scanning electron microscopy | Ethanol | Images | Microscopy | Phosphors | Heating | Roasting | Photographs | Energy transfer
Journal Article
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, ISSN 1386-1425, 10/2016, Volume 167, pp. 1 - 11
Journal Article
6. A cationic tetrahedral Zn(ii) cluster based on a new salicylamide imine multidentate ligand: synthesis, structure and fluorescence sensing study (Electronic supplementary information (ESI) available: Crystallographic data and details of refinements for Zn4L3 (Table S1), the selected bond lengths and angles for Zn4L3 (Table S2). 1H NMR spectra and the assignment of H2L in d6-DMSO (Fig. S1). Optimized molecular geometry of H2L and its contour plots of the frontier orbitals (Fig. S2). The high resolution ESI mass spectrum of Zn4L3 in mixed HEPES buffer (pH = 7.4) + DMSO (V : V = 1 : 9) solution (Fig. S3). The high resolution ESI mass spectrum of Zn4L3 in HEPES buffer (pH = 7.4) solution (Fig. S4). 1H NMR spectra of Zn4L3 in d6-DMSO + D2O (V : V = 9 : 1) (Fig. S5). Comparing the simulated PXRD (black line) and experimental patterns of Zn4L3 in bulk samples and that soaked in solution (Fig. S6). Fluorescence emission changes of H2L (50 μM) upon the addition of different cations in mixed HEPES buffer (pH = 7.4) + DMSO (V : V = 1 : 9) solution (Fig. S7a). Fluorescence emission changes of H2L (50 μM) in mixed HEPES buffer (pH = 7.4) + DMSO (V : V = 1 : 9) solution upon the addition of Zn2+ (inset: the visual fluorescence response of H2L upon the addition of Zn2+ in mixed HEPES buffer (pH = 7) + DMSO (V : V = 1 : 9) solution under a UV light at 365 nm) (Fig. S7b). The Job curves of Zn4L3 in HEPES buffer (pH = 7.4) + DMSO (V : V = 1 : 9) solution (Fig. S7c). Fluorescence emission intensity of Zn4L3 at 472 nm in the absence/presence of different cations in HEPES buffer (pH = 7.4) + DMSO (V : V = 1 : 9) solution ((Fig. S7d). Contour plots of the frontier orbitals of Zn4L3 (Fig. S8). The simulated fluorescence spectrum of H2L and Zn4L3 based on TD-DFT calculations (Fig. S9). The linear concentration range of Zn4L3 (50.0 μM) with H2PO4– in mixed HEPES buffer (pH = 7.4) + DMSO (V : V = 1 : 9) solution (λem = 472 nm) (Fig. S10), relative emission intensity at 472 nm upon adding Zn2+/H2PO4– in mixed HEPES buffer (pH = 7.4) + DMSO (V : V = 1 : 9) solution (Fig. S11), emission spectra of Zn4L3 upon the addition of 1 equiv. NaH2PO4/Na2HPO4/Na3PO4 in mixed HEPES buffer (pH = 7.4) + DMSO (V : V = 1 : 9) solution (Fig. S12), UV-Vis spectra of Zn4L3 upon the addition of H2PO4– in mixed HEPES buffer (pH = 7.4) + DMSO (V : V = 1 : 9) solution (Fig. S13). CCDC 1881297. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c9dt01376h)
Dalton Transactions, ISSN 1477-9226, 01/2019, Volume 48, Issue 32, pp. 12326 - 12335
A monocationic ZnII tetrahedral cluster, [Zn4L3(μ3-OH)]·NO3·1.25H2O (Zn4L3) based on a new salicylamide imine ligand H2L, H2L =... 
Angles (geometry) | Phosphates | High resolution | Orbitals | Shape | Nuclear magnetic resonance--NMR | Fluorescence | Spectra | X ray analysis | Crystallography | Sodium hydrogen phosphate | Single crystals | Ultraviolet radiation | Anions | Sodium phosphate | Buffer solutions | Emission spectra | Contours | Clusters | Ligands | Cations | Detection | Chelates
Journal Article
9. Experimental and theoretical insights into the influence of electronic density on proton-transfer reactions (Electronic supplementary information (ESI) available: Fig. S1 shows the HOMO/LUMO orbitals and energy diagram of NMHBI and NMHPPI at the S0 and S1 states in different solvents. Fig. S2 shows the most stable conformation of MPPI at the S0 and S1 states. Fig. S3 and S4 show the UV-visible absorption and fluorescence spectra in different pH solutions. Fig. S5 exhibits the excitation spectra in DCM solutions. Fig. S6 shows the UV-visible absorption and emission spectra in ACN and TAC solutions, respectively. Fig. S7 shows the magic-angle emission decays in DCM solutions excited at 320 nm. Fig. S8 shows the magic-angle emission decays of HPPI in DCM solutions and DPPI in DCM-d2 solutions. Fig. S9 shows the magic-angle emission decays of NMHPPI excited at 320 nm in ACN and TAC solutions. Fig. S10 shows the UV-visible absorption and emission spectra, and the femtosecond emission transients of HBI in DCM solutions. Fig. S11 and S12 show the 1H NMR spectra in DMSO-d6 and chloroform-d solutions, respectively. Fig. S13 shows the FTIR spectra in potassium bromide (KBr). Table S1 give the dipole moment variations (in Debye) for the studied molecules in DCM and water and the total Mulliken charges of MHPPI at different electronic states. Tables S2 and S3 list the time constants of HPPI in DCM and ACN solutions, excited at 370 and 390 nm, and HBI in DCM solutions upon excitation at 350 nm. Table S4 shows the values of the chemical shifts in the aromatic protons in the 2-phenyl moiety of the studied compounds. See DOI: 10.1039/c8cp03185a)
Physical Chemistry Chemical Physics : PCCP, ISSN 1463-9076, 01/2018, Volume 20, Issue 42, pp. 27149 - 27161
We report on the excited-state behavior of proton-transfer phenanthroimidazole derivatives, such as HPPI and NMHPPI, in solutions using steady-state and femto-... 
Spectral emissivity | Protons | Nuclear magnetic resonance--NMR | Fluorescence | Triacetin | Electron states | Absorption | Mathematical analysis | Aromatic compounds | Emission spectra | Tables | Excitation spectra | Charge transfer | Femtosecond | Solvents | Potassium bromides | Twisting | Chloroform | Molecular orbitals | Ions | Organic chemistry | Acetonitrile | Decay | Dichloromethane | Dipole moments
Journal Article
Analytical Chemistry, ISSN 0003-2700, 01/2018, Volume 90, Issue 1, pp. 785 - 793
Using the recent polarized resonance synchronous spectroscopic (PRS2) technique, we reported the quantification of photon extinction, absorption, scattering... 
CHEMISTRY, ANALYTICAL | PROTEIN | FLUORESCENCE | SIZE | ENHANCEMENT | LARGE STOKES SHIFT | OPTICAL-PROPERTIES | SURFACE-PLASMON RESONANCE | RAYLEIGH-SCATTERING | METAL NANOPARTICLES | WATER
Journal Article
Journal of Physical Organic Chemistry, ISSN 0894-3230, 10/2019, Volume 32, Issue 10, p. n/a
The ultraviolet (UV) absorption spectra of the supermolecular system involving silver nanoparticles–substituted N‐(phenyl‐ethylene)‐anilines were investigated.... 
UV absorption wavelength shift | supermolecular system | substituent effect | N‐(phenyl‐ethylene)‐anilines | silver nanoparticles | N-(phenyl-ethylene)-anilines | CONSTANTS | HYDROGENATION | CHEMICAL-SHIFTS | CHEMISTRY, ORGANIC | CHEMISTRY, PHYSICAL | ENHANCED RAMAN-SCATTERING | FLUORESCENCE | SERS | DNA | SURFACE | Nanoparticles | Silver | Hydroxides | Hydrogen | Investigations | Ethylene
Journal Article
17. Highly selective and sensitive recognition of Zn(ii) by a novel coumarinyl scaffold following spectrofluorometric technique and its application in living cells (Electronic supplementary information (ESI) available: H2L and its synthesis are shown in Schemes S1 and S2; ESI-MS spectrum of H2L (Fig. S1); 1H NMR spectrum of H2L in CDCl3 (Fig. S2); IR spectrum of H2L (Fig. S3); 1H NMR spectrum of [ZnL] in CDCl3 (Fig. S4); ESI-MS spectrum of [ZnL] complex (Fig. S5); IR spectrum of [ZnL] complex (Fig. S6); the observed absorbance and emission values of H2L (Table S1); selected bond lengths and bond angles in [ZnL] (Table S2); comparison of Torsion angles of two molecules in the asymmetric unit (Table S3); intermolecular C–H–π and π–π stacking interaction of [ZnL] (Fig. S7 and S8); Job's plot for the reaction between H2L and Zn2+ (Fig. S9); excited state induced proton transfer: phenol-imine vs. keto-amine tautomerization (Scheme S3); IR spectrum of H2L + Cd2+ complex (Fig. S10); ESI-MS spectrum of H2L + Cd2+ complex (Fig. S11); LOD determination for Zn2+ (Fig. S12); some reports of Zn sensor with LOD values (Table S4); Benesi–Hildebrand plot for Zn2+ (Fig. S13); effect of pH on the fluorescence activity of H2L and H2L with Zn2+ (Fig. S14); interferences on Zn2+ sensitivity by various metal ions (Fig. S15). Composition and energy of MOs [H2L] (Table S5) and of [ZnL] (Table S6); the calculated spectral transitions for [ZnL] (Table S7); frontier molecular orbitals of H2L (Fig. S16) and of [ZnL] (Fig. S17); calibration plot between emission intensity of the probe H2L at 510 nm vs. concentration of Zn2+ ion in tap water (Fig. S18). CCDC 1852847 contains the supplementary crystallographic data for [ZnL]. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c8nj03597k)
New Journal of Chemistry, ISSN 1144-0546, 01/2018, Volume 42, Issue 19, pp. 16297 - 16306
A probe of 8,8′-((1Z,1′Z)-(((propane-1,3-diylbis(oxy))bis(2,1-phenylene))bis(azanylylidene))bis(methanylylidene))bis(7-hydroxy-4-methyl-2H-chromen-2-one) (H2L)... 
Drinking water | Infrared spectroscopy | Composition | Nuclear magnetic resonance--NMR | Fluorescence | Emission | X-ray diffraction | Molecular orbitals | Crystallography | Zinc | Single crystals | Sensitivity | Tables | Polarity
Journal Article
19. Zn2+/Cd2+-RNA-mediated intense white-light-emitting colloidal CdSe nanostructures in aqueous medium – enhanced photophysics and porous morphology induced by conformational change in RNA (Electronic supplementary information (ESI) available: The following files are available free of charge. Experimental section: reagents, equipment and methodology; Fig. S1. 3D excitation–emission spectra of ZnCS; Fig. S2. Emission spectra of solid sample of ZnCS; Fig. S3. Size histograms of average diameter of ZnCS (a) and ZnCS1 (b); Fig. S4. 3D surface for TEM image; Fig. S5. TEM image of ZnCS2 at another location (a and b) and size histogram of ZnCS2; Fig. S6. Depth profiles of ZnCS1 (a) and ZnCS2 (b); Fig. S7. Size histogram of flute-like morphology from other different FESEM images; Fig. S8. XPS spectra of ZnCS1 and ZnCS2; Fig. S9. 1H and 31P NMR spectra of ZnCS and ZnCS1; Fig. S10. 1H and 31P NMR spectra of BR and BRZC; Fig. S11. Fluorescence lifetime of solid ZnCS at different emission wavelengths; Fig. S12. Time-resolved anisotropy decay curves for ZnCS (a), ZnCS1 (b) and ZnCS2; Fig. S13. I–V plot for ZnCS2 (a) and decay of current with time for ZnCS, ZnCS1 and ZnCS2; Fig. S14. Langmuir isotherm for the adsorption of RhB on ZnCS, ZnCS1 and ZnCS2; Fig. S15. Fluorescence images of ZnCS and ZnCS2; Fig. S16. TEM image of aged Cd2+-CdSe nanohybrids; Fig. S17. Absorbance and fluorescence spectra of Cd2+-CdSe; Fig. S18. Absorbance and fluorescence spectra of ZnSe (a) and ZnSe containing excess Cd2+ (b); Fig. S19. CD spectra of BRZC (a) and deconvolution of the positive peaks (b). Table S1. Variation in lifetime at λem = 545 nm for different amounts of Zn2+; Table S2. IR spectral data for different samples; Table S3. CD spectral data for different samples; Table S4. Lifetimes for ZnCS, ZnCS1 and ZnCS2 at different emission wavelengths (λex = 440 nm); Table S5. Lifetime for solid ZnCS sample; Table S6. Surface characteristics data from adsorption study; Table S7. Ratio of Cd/Zn determined by XPS analysis; Table S8. CD spectral data for BRZC. See DOI: 10.1039/c8tc05560b)
Journal of Materials Chemistry. C, Materials for Optical and Electronic Devices, ISSN 2050-7526, 01/2019, Volume 7, Issue 3, pp. 692 - 708
The present work reports the synthesis of Zn2+/Cd2+-bound RNA-mediated CdSe nanostructures, which emit intense white light, in an aqueous medium. A typical... 
Infrared spectroscopy | Nucleation | Fluorescence | Cobalt | Thin films | Histograms | Quantum efficiency | Light emission | Aqueous solutions | Emission spectra | Spectrum analysis | Surface properties | Excitation spectra | Copper | Cadmium | Images | Lifetime | Absorbance | Wavelengths | Ribonucleic acids | Adsorption | Anisotropy | Morphology | Reagents | Decay | Nickel
Journal Article
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