Certain organic polymeric materials are capable of reversibly accepting or donating electrons from a reducing entity. The redox sites in the polymer accept electrons and, as a result, a change in the properties of the polymer occurs. This change is useful in modifying or etching the polymeric material. The material can be modified by incorporation of metallic seeds into the material at a controlled depth. The seeds are incorporated by interaction of cations of the metals with the redox sites in the polymer, which cause the reduction of the cations to form the neutral metallic seeds. Subsequent exposure of the polymeric material containing the seeds to an electroless bath causes further deposition of metal having the desirable characteristic of good adhesion to the polymeric material. Etching of the polymeric material can be carried out as a result of an increase in solubility of the polymer in aprotic solvents when its redox sites have accepted electrons. The increased solubility allows openings to be etched in certain areas of the polymeric material that have been reduced, leaving other areas unchanged.
某些有机聚合物材料能够从还原实体中可逆地接受或捐献电子。聚合物中的氧化还原位点接受电子,因此聚合物的性质会发生变化。这种变化有助于聚合物材料的改性或蚀刻。可通过在材料中按一定深度加入
金属种子来改性材料。
金属种子是通过
金属阳离子与聚合物中的氧化还原位点相互作用而加入的,氧化还原位点会导致阳离子还原,从而形成中性
金属种子。随后,将含有种子的聚合物材料置于无电解槽中,可进一步沉积
金属,这些
金属具有与聚合物材料良好粘合的理想特性。当聚合物的氧化还原位点接受电子后,聚合物在非沸腾溶剂中的溶解度会增加,因此可以对聚合物材料进行蚀刻。溶解度的增加可在聚合物材料中某些已被还原的区域蚀刻出开口,而其他区域则保持不变。