Femtosecond, broadband nonlinear optical studies of a zinc porphyrin and zinc phthalocyanine

Optoelectronic, femtosecond nonlinear optical properties and excited state dynamics of a triphenyl imidazole induced phthalocyanine derivative

“…All the details of the Z-scan experiments are documented in our earlier works. 46,47 The solutions were placed in a 1 mm cuvette (thickness was less than the Rayleigh range), satisfying the thin-sample approximation during the Z-scan data analysis. The input peak intensities used were 20-60 GW cm À2 and the Rayleigh range was in the 1.9-2.8 mm range for the 700-900 nm spectral window.…”

“…59 Our earlier studies on similar molecules demonstrated that the major contribution to the nonlinear absorption when excited with nJ, MHz, 800 nm pulses (from fs oscillator) was from the instantaneous TPA and/or partial contributions from excited state absorption (minimal) and thermal lensing. 39,46 Hence, we performed the NLO studies with a much lower repetition rate (1 kHz, $70 fs, obtained from a fs amplier/optical parametric amplier) laser pulses. Here, we recorded the Z-scan data from the visible to NIR (600 nm to 1.2 mm) wavelength range.…”

“…[29][30][31][32][33][34][35] In this regard, our group has also investigated many phthalocyanines to understand the structure and NLO properties correlation for identifying potential molecules for various photonic applications. [36][37][38][39][40][41][42][43][44][45][46][47] over the last few years. To this end our group has been involved in investigating and optimizing the NLO properties of different phthalocyanine, Corrole 37 molecules in the form of thin lms, nanoparticles (NPs) and solutions.…”

Optical, Electrochemical, Third-Order Nonlinear Optical Investigations of 3,4,5-Trimethoxy Phenyl Substituted Non-Aqueous Phthalocyanines

“…To revive the study of the potential of NLO in the field of telecommunication, photonics, biomedicine, and optical signal processing, several NLO moieties were designed through various π-conjugated organic molecules ( Mardar, 2006 ; Bures et al, 2012 ; Sofiani et al, 2016 ; Biswas et al, 2020 ). For this reason, a great variety of small organic molecules and macrocyclic systems, such as porphyrins ( Rao et al, 2000 ; Senge et al, 2007 ; Swain et al, 2014a ; Katturi et al, 2020b ; Rathi et al, 2020 ; Vijisha et al, 2020 ; Kumar et al, 2021a ), phthalocyanines ( de la Torre et al, 2004 ; Kumar et al, 2007 ; Swain et al, 2014b ; Zhang et al, 2014 ; Bharati et al, 2018 ; Venkatram et al, 2018a; Venkatram et al, 2018b; Bhattacharya et al, 2019a ; Bhattacharya et al, 2019b ; Bhattacharya et al, 2021 ), corroles ( Katturi et al, 2020a ; Lu et al, 2021 ), porphycenes ( Sarma et al, 2011 ; Swain et al, 2012 ; Pati et al, 2020 ), and BODIPY dyes ( Ngoy et al, 2019 ), have been investigated for their NLO properties. Of these systems, we are particularly interested in phthalocyanine-based macrocyclic systems toward these applications.…”

Multifunctional zinc phthalocyanine‐phenolic resin (ZnPc‐PFR)@MSN nanocomposite based fluorescent imaging, photothermal therapy, and pH‐sensitive drug release

“…ZnPc and its derivatives, known as a compound of a large conjugate system, connected by metal and part of nonmetallic elements, have been widely used in different fields, such as information recording materials, solar cells, 28–30 and nonlinear optics 31,32 . The thermal, chemical and light stability makes them promising photodynamic therapy (PDT) applications and photothermal therapy (PTT) 33,34 .…”