| Full text | |
| Author(s): |
Valverde, Joao V. P.
;
Pelosi, Andre G.
;
Zucolotto Cocca, Leandro H.
;
Marbello, Orlando D.
;
le Bescont, Julie
;
Breton-Patient, Chloe
;
Piguel, Sandrine
;
Silva, Daniel L.
;
De Boni, Leonardo
;
Mendonca, Cleber R.
Total Authors: 10
|
| Document type: | Journal article |
| Source: | JOURNAL OF MOLECULAR LIQUIDS; v. 373, p. 11-pg., 2023-01-18. |
| Abstract | |
Imidazo[1,2-a]pyridine derivatives are versatile molecules with excellent emissive properties, making them interesting for various applications, from fluorescent probes to organic light-emitting diodes (OLEDs). Furthermore, such molecules enable the incorporation of different peripheral groups during the synthesis, which can improve the desired optical properties. However, there is a lack of studies that report this compounds class linear and nonlinear optical characteristics. Here, spectroscopic measure-ments were performed on seven imidazo[1,2-a]pyridine derivatives with different peripheral groups, to understand their influence on the two-photon absorption (2PA) cross-section. Results showed that the effective increase molecular conjugation, provided by the naphthalene substituent, leads to an increase of approximately seven times in the 2PA cross-section. Furthermore, it was shown that the same result is obtained when groups with a strong electron withdrawing or donating character are linked to the imidazo[1,2-a]pyridine core. Such results indicate a possible route to obtaining considerable nonlin-ear optical responses in this organic compounds class.(c) 2023 Elsevier B.V. All rights reserved. (AU) | |
| FAPESP's process: | 20/08715-2 - Fabrication of polymeric micro-resonators with nanodiamonds for quantum information technologies |
| Grantee: | Filipe Assis Couto |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 18/11283-7 - Nonlinear photonics: spectroscopy and advanced processing of materials |
| Grantee: | Cleber Renato Mendonça |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 16/20886-1 - Ultrafast nonlinear optical spectroscopy: Transient Absorption and optical Kerr Gate with polarization control |
| Grantee: | Leonardo de Boni |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 11/12399-0 - Femtosecond pulses applied to nonlinear optics: spectroscopy, pulse shaping and microfabrication |
| Grantee: | Cleber Renato Mendonça |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 15/20032-0 - Study on Nonlinear and Charge Transport Properties of Multi-branched Molecules via Quantum Chemical Methods. |
| Grantee: | Daniel Luiz da Silva |
| Support Opportunities: | Regular Research Grants |