Synthesis and Application of Functional Dyes Haveing Sgtrong Absorption in the Near-IR

2014 Fiscal Year Final Research Report

• Project/Area Number: 23350095
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Organic and hybrid materials
• Research Institution: Tohoku University
• Principal Investigator: KOBAYASHI NAGAO 東北大学, 理学(系)研究科(研究院), 教授 (60124575)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 近赤外色素 / フタロシアニン / ポルフィリン / 蛍光 / BODIPY / 合成

Outline of Final Research Achievements

The compounds having strong absorption bands in the near-IR region have attracted attention due to their applicability as photosensitizer in photodynamic therapy and energy-capturing materials in solar cells. In order to meet these demands, we have designed and synthesized porphyrin, phthalocyanine, and BODIPY derivatives having strong absorption beyond 700 nm. When 8-10 pyrrole rings were linked directly to make cyclic compounds, the resultant aromatic compounds showed strong absorption in the 1300-1600 nm region. Phthalocyanines modified by sulfur, selenium, or terbium in their periphery, and phosphorus, arsenic, and antimony in the center, showed main absorption between 1000 and 1100 nm, together with fluorescence. Linearly dimerized BODIPYs showed absorption and strong fluorescence between 700 and 900 nm, suitable for the detection of cancer cells.

Free Research Field

芳香環金属錯体