Nonlinear Optical Properties of Discotic Hexylthiotruxene Derivatives.

ABSTRACT: The search for efficient and transparent nonlinear optical (NLO) media has led to the investigation and development of alternative organic optical materials. In this context, a series of new hexylthiotruxene derivatives have been synthesized, and their linear and NLO properties are explored. These truxene derivatives show large NLO absorption due to their C₃ symmetry, presence of large hyperpolarizability, and extended π-conjugation. Herein, we show that two-photon absorption and three-photon absorption processes are the main cause of nonlinear absorption in these materials under 5 ns and 100 fs excitations at 532 and 800 nm excitations, respectively. The nonlinear absorption coefficients have high values of 2 to 7.9 × 10^-10 m/W in the nanosecond domain and 2.2 to 7.4

SUBMITTER: Kumar M 

PROVIDER: S-EPMC10702317 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature