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Preparation and Third‐Order Nonlinear Optical Properties of Novel Axial Fullerenol‐Substituted Phthalocyanines.

Authors :
Xu, Rui
Xu, Haonan
Zhu, Min
Li, Wei
Zhang, Yunhe
Source :
Macromolecular Chemistry & Physics. Oct2024, Vol. 225 Issue 20, p1-9. 9p.
Publication Year :
2024

Abstract

This research presents the optical limiting properties of a novel axially linked D‐A type compound, LaPc‐C60(OH)n, where lanthanide phthalocyanine serves as the donor and fullerenol as the acceptor. The incorporation of fullerenol expands the π‐conjugated system, decreases the aggregation of the phthalocyanine, and significantly increases the solubility of the compound. The establishment of this D‐A system promotes intramolecular electron transfer, effectively improving both the non‐linear optical (NLO) response and optical limiting properties. In addition, homogeneous poly(methyl methacrylate) (PMMA) composite films (LaPc‐C60(OH)n/PMMA) are prepared using a simple solution casting method. Compared to fullerenol or lanthanum phthalocyanine individually, LaPc‐C60(OH)n exhibited a superior NLO response both in solution and in the solid composite film. In particular, LaPc‐C60(OH)n/PMMA demonstrated an increase in the non‐linear absorption coefficient (2050 cm GW−1) and a larger third‐order magnetization (1.84 × 10−8 esu). In addition to exhibiting an excellent NLO response at 532 nm, LaPc‐C60(OH)n also shows significant NLO enhancement at 1064 nm, extending the limiting range into the near‐infrared region. This behavior is attributed to different nonlinear absorption mechanisms and the synergistic effect that arise from the photo‐induced electron transfer process between the fullerenol and LaPc. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
10221352
Volume :
225
Issue :
20
Database :
Academic Search Index
Journal :
Macromolecular Chemistry & Physics
Publication Type :
Academic Journal
Accession number :
180387973
Full Text :
https://doi.org/10.1002/macp.202400186