奈米碳管微電路焊接技術開發

In previous projects, we observed that Ry(bpy)32+-analogue complexes, such as Ru(bpy)2(phendione)2+ (bpy = 2,2’-bipyridine, phendione = 1,10-phenanthroline-5,6-dione), are useful building blocks for preparing photomagnetic surfaces. As they were modified on HOPG and carbon nanotubes, most exhibited room-temperature photomagnetism as exposed to the 473-nm light, which indicates that the resulting surfaces are room-temperature photomagnetic and useful in moden spintronics. Despite this, how to fabricate them into circuits turns out to be the first challenge before the dream comes true. In this regard, we observed that phenothiazine, such as thionine (TN), are a useful molecular ink. Literatures show that TN and its structural analogues are effective mediators for extracellular electron-transfer reactions as in their natural state or the form of polymer. These properties inspired us to carry out investigations on the possibility of using AFM dip-pen technique and TN to develope a microsoldering technique to fabricate CNT circuits. Although nanogold particles may compete eith TN, the latter appears to be more applicable and promising, suggesting that the developed microoldering technique may be useful in fabricating next-generation photomagnetic and photoconductive electronics.