Abstract
AbstractThree novel hydroxyl substituted and triphenylamine sidearm coumarin decorated molecules were prepared to examine the effect of adjacent hydroxyl substituent as well as coumarin units on the photophysical linear and nonlinear optical properties. Both hydroxyl function adjacent to the phenyl ring and extra coumarin unit is attributed to the red shifted absorption (435‐487 nm) and emission (496‐578 nm) compared to the plain triphenylamine based coumarin derivatives. Positive solvatochromism around 70 nm was observed in solvents with different polarity polarities and it is reinforced by solvent polarity plots and multilinear regression study. Very high viscosity induced emission enhancement (5.7 – 8.2 fold) was observed for in ethanol/polyethylene glycol‐400 system, highlighting their capability to act as efficient fluorescent molecular rotors (FMRs). The nonlinear optical properties were investigated by solvatochromism as well as a computational method using B3LYP 6–311++G (d, p) basis set. All these compounds exhibited large magnitudes of first order (65‐208x10 −30e.s.u) and second order (560‐2120x10 −36e.s.u) hyperpolarizability.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
