本研究利用布魯斯特角顯微鏡技術（Brewster angle microscopy, BAM），探討沈積促進劑的添加對氣/液界面上四第三丁基銅酞花青 （copper (II) 2,9,16,23-tetra- tert-butyl-29H,31H-phthalocyanine, CuTTBPc）分子層形態的影響。由於CuTTBPc分子間具極強的作用力，即使改變分佈溶劑或降低分子層的界面密度，仍難以避免CuTTBPc分子在界面上的聚集。然而實驗結果顯示沈積促進劑二十碳酸的加入，能減緩氣/液界面上CuTTBPc分子的聚集，得以提高分子層的均勻性。若以正二十碳醇為沈積促進劑，當添加比率為20 或50 mol%時，混合分子層的BAM影像皆與純CuTTBPc分子層的類似，可能因正二十碳醇的自聚行為使得混合分子層的形態由CuTTBPc主導。添加20 mol% 正十八碳醇於CuTTBPc分子層中，則能抑制不均勻明亮網狀結構的形成，且當添加比率提高至50 mol%時，有助於提升混合分子層的均勻性。若以正十六碳醇為添加劑，則部分CuTTBPc分子會自聚形成亮團並分布於分子層中，此時的混合分子層形態似由正十六碳醇主導。比較CuTTBPc與不同沈積促進劑在氣/液界面上所形成之混合分子層的形態，可發現二十碳酸的添加，較易形成結構均勻的混合分子層，且幾乎觀察不到不規則聚集體的生成。若是利用長碳鏈醇做為添加劑，其添加比率與碳鏈長度必須同時考慮，才能得到均勻的分子層。

This study investigated the influence of transfer promoter addition on the layer morphology of copper (II)2,9,16,23-tetra-tert-butyl-29H,31H-phthalocyanine （CuTTBPc）at the air/water interface. Due to the strong interactions between CuTTBPc molecules, the aggregation of CuTTBPc molecules at the interface is difficult to be avoided even by changing the spreading solvent or decreasing the CuTTBPc surface density. However, experimental results demonstrated that by the addition of arachidic acid, the extent of CuTTBPc molecule aggregation at the air/water interface could be reduced, improving the CuTTBPc layer homogeneity. When 1-eicosanol was added with a mol% of 20 or 50 as the transfer promoter, BAM images of the mixed CuTTBPc/1-eicosanol layers were similar to those of a CuTTBPc layer. It appears that CuTTBPc may control the mixed layer morphology probably because of the self-aggregation of 1-eicosanol molecules. With the presence of 20mol% 1-octadecanol in a CuTTBPc layer, the formation of inhomogeneous bright network structures was inhibited. When the concentration of 1-eicosanol in a mixed layer was increased to 50mol%, the homogeneity of the mixed layer could be improved. If 1-hexadecanol was used as the transfer promoter, part of CuTTBPc molecules would self-aggregate to form bright domains distributing in the mixed layer, probably because 1-hexadecanol controlled the mixed layer behavior. By comparing the mixed layer morphology of CuTTBPc with various transfer promoters at the air/water interface, one can find that with the presence of arachidic acid, it is easy to obtain a mixed layer with homogeneous structures and formation of irregular aggregates is barely detected. If a long-chain alcohol is used as the transfer promoter, both the concentration and hydrocarbon chain length have to be considered in order to obtain a homogeneous mixed layer.

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