Growth and characterization of chalcone derivative single crystal

Ravindrachary, V.; Crasta, Vincent; Bhajantri, R. F.; Poojari, Boja

doi:10.1016/j.jcrysgro.2004.10.114

Cited by 29 publications

(10 citation statements)

References 12 publications

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“…When we plot the Tauc's graph for m¼ ½ a linear behavior is observed. This is considered as an evidence of direct transition for LN [29]. The value of the band gap was calculated from the plot between (ahn) 2 and hn as shown in Fig.…”

Section: Optical Studiesmentioning

confidence: 99%

Experimental and theoretical studies on physicochemical properties of l-leucine nitrate—a probable nonlinear optical material

Adhikari¹,

Kar²

2012

Journal of Crystal Growth

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Section: Optical Studiesmentioning

confidence: 99%

Experimental and theoretical studies on physicochemical properties of l-leucine nitrate—a probable nonlinear optical material

Adhikari¹,

Kar²

2012

Journal of Crystal Growth

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“…To improve the utility of such chromophore, they are either embedded or cross-linked in to a polymer matrix to achieve guest-host complex or composite to acquire suitable property [1,2].…”

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confidence: 99%

“…Ltd Mumbai. A novel organic NLO optical chromophore chalcone derivative 1-(4-methylphenyl)-3-(4,N,N-dimethylaminophenyl)-2-propen-1-one (MPDMAPP), has been synthesized using standard method [1] and its structure is given in Fig. 1.…”

mentioning

confidence: 99%

Positron annihilation studies on chalcone chromophore doped PVA

Bhajantri

Ravindrachary

Harisha

et al. 2009

Phys. Status Solidi (c)

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A novel organic non‐linear optical material 1‐(4‐methylphenyl)‐3‐(4‐ N, N dimethyl amino phenyl)‐2‐propen‐1‐one (MPDMAPP) chalcone chromophore has been synthesized by standard method. Pure and MPDMAPP doped Poly(vinyl alcohol) films are prepared using solution casting method and characterized using UV‐Visible absorption and Positron Annihilation Lifetime Spectroscopy. The optical spectroscopic study shows three absorption bands, 196‐202 nm assigned to localized n →π * transitions, 205‐320 nm to n →π * inter‐band and 385‐428 nm assigned to π →π * transition and arises due to the charge transfer complex. Using observed UV‐Vis spectra, three optical energy gaps, Eg1 (4.96–4.25 eV), Eg2 (3.47–3.32 eV) and Eg3 (2.33–2.24 eV) have been estimated. The observed change in Eg upon doping is understood based on the formation of charge transfer complex arising from the –HC=CH– structure present in the composite and due to the interactions of dopant and OH group of PVA. The PALS results shows that the o‐Ps lifetime decreases continuously as doping concentration increases and I3 initially increases (from 18.82% to 20.95%) from 0 wt% to 0.05 wt% and then decreases gradually up to 16.76% for higher dopant concentrations with decrease in optical band gaps. The variation of positron data with Eg is understood by correlating the probability of Ps formation with the complex. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…The SHG efficiency of BMP was comparable with that of urea. BMP has the same magnitude of SHG efficiency as 1-(4-methylphenyl)-3-(4-N,N dimethyl amino phenyl)-2-propen-1-one [23], better SHG efficiency than 1-(4-chlorophenyl)-3-(4-chlorophenyl)-2-propen-1-one [24] and twice that of 1-(4-methylphenyl)-3-(4-methoxyphenyl)-2-propen-1-one [25].…”

Section: Article In Pressmentioning

confidence: 96%