J.Technology and Education, Vol.33, No.1, pp.35-39 (2026)
研究論文

電子供与性置換基と典型元素を導入した金属フタロシアニンの合成

 

松井 栄樹^*，冨原 颯太

福井工業高等専門学校 物質工学科 （〒916-8507 福井県鯖江市下司町）

*eiki@fukui-nct.ac.jp

 

Synthesis of metal phthalocyanine complexes combining electron-donating substituents and main group elements

 

Eiki MATSUI* and Sota TOMIHARA

Department of Chemistry and Biology, National Institute of Technology, Fukui College
(Geshi, Sabae, Fukui 916-8507, Japan)

 

(Received April 4, 2026; Accepted May 12, 2026)

 

Phthalocyanine (Pc) is an organic dye with strong absorption in the visible to ultraviolet region, precise control of optical absorption is essential for developing new functional dyes. A widely used strategy involves introducing main group elements, such as phosphorus or silicon, into the Pc core while incorporating electron-donating substituents to fine-tune visible-to-near-infrared (Vis-NIR) absorption properties. This study focused on synthesizing P(V)Pc1 and P(V)Pc2, in which phosphorus reagents (POBr?, PBr?) were employed to modify the optical properties. The new visible absorption band is attributed to intramolecular charge-transfer (ICT) transitions between the central phosphorus atom and the electron-donating substituents. Meanwhile, the redshift of the Soret band indicates that skeletal rearrangement led to symmetry loss, thereby altering the electronic structure of the Pc core.

Keywords: Phthalocyanine, Electron-donating Substituents, Central metal, Tetrabenzotriazacorrole