Dielectric, fluorescence, filter, nano tribological and photoconductivity studies of 4-(4-chlorophenyl)-7,7-dimethyl-7,8
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Dielectric, fluorescence, filter, nano tribological and photoconductivity studies of 4‑(4‑chlorophenyl)‑7,7‑dimethyl‑7,8‑dihydro‑4H‑1‑benzopyran ‑2,5 (3H,6H)‑dione (CPDMDHHBPHHD) macro and nano crystals M. Kolanjinathan1 · K. SenthilKannan2 · D. Sankar3 · P. Periyathambi4 · M. Iyanar5 · S. Gunasekaran6 · P. Baskaran1 · M. Meena7 · M. Vimalan8 Received: 27 May 2020 / Accepted: 12 August 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract The present investigation is focused on the macro and nanocrystals of 4-(4-chlorophenyl)-7,7-dimethyl-7,8-dihydro4H-1-benzopyran-2,5(3H,6H)-dione (CPDMDHHBPHHD), its synthesis, and the various characterization and comparative studies performed to assess its applications. Nanocrystals were prepared by milling procedure and its evaluation and utility than macro-sized entitled crystals were thoroughly discussed. The single crystal XRD study reveals the macro-crystalline lattice parameters with the empirical formula as C17H17ClO3 and a = 11.9005 Å, b = 5.7971 Å, c = 22.608 Å and β = 93.97°. The crystal system is monoclinic with space group P 21/n. The nanoform of entitled crystals specimen are of 16 nm of size. Characterization studies for macro- and nano-scaling such as dielectric, fluorescence (FL), photoconductivity, tribological study, and nano influx for filters were performed and reported. From the present study, it could be concluded that CPDMDHHBPHHD crystals are known to be best for electronic filters, frequency doubling circuits, second harmonic generation (SHG) efficiency, and nano level influx value which is useful for opto-electronic applications.
1 Introduction The increasing requirement for the new nonlinear optical (NLO) resources has concentrated principally on the organic compounds appropriate to its inexpensive, rapid, and bulky nonlinear responses over an expansive frequency response, innate systematic flexibility, high optical damage, and inherent admissibility [1]. The NLO possessions of bulky organic molecules and polymers have been the focus of wide-ranging hypothetical and investigational explorations during the past three decades and they have been considered extensively appropriate to their high nonlinear optical properties, electro-optic effect, and large second- or third-order hyperpolarizabilities compared to their counter-parting NLO materials [2]. The advantages of organic nonlinear optical materials are as follows: (i) higher second-order nonlinear optical competence, (ii)
* K. SenthilKannan [email protected]
4
Department of ECE, Paavai Engineering College (Autonomous), Pachal, Namakkal, Tamilnadu 637 018, India
* M. Vimalan [email protected]
5
PG & Research Department of Physics, National College (Autonomous) (Affiliated to Bharathidasan University – Tiruchirappalli – 620 024), Trichy, Tamilnadu 620001, India
6
Department of R and D, St. Peter’s Institute of Higher Education and Research – SPIHER, Avadi, Chennai, Tamilnadu 600 054, India
7
Physics Research Centre, S.T. Hindu Colle
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