本論文主要利用紫質為樹枝狀分子的中心核,合成兩系列的dendrimers,主要是以azobenzene與carbazole為末端官能基,在合成過程均不需保護與去保護的步驟。在carbazole系列中我們成功的得到CazP(Gn)4與CazPZn(Gn)4 (n = 1, 2)等四種dendrimers;而azobenzene系列則有AzoP(Gn)4與AzoPZn(Gn)4 (n = 1, 2, 3)等六種dendrimers。 在carbazole dendrimers系列中,我們試著利用自組裝的方式去解決Light-Harvesting dendrimers在設計上難以合成的困境,而事實上這實驗並沒有成功。 而azobenzene dendrimers系列中,利用azobenzene可光異構化的性質,利用循環伏安法測量其不同代數及trans、cis狀態時氧化還原電位變化,藉此得知dendrons對紫質的遮蔽情形。
Without employing protecting and deprotecting procedures were prepared. Two series of dendrimers 【i.e. CazP(Gn)4, CazPZn(Gn)4 (n = 1, 2) and AzoP(Gn)4, AzoPZn(Gn)4 (n = 1, 2, 3)】 containing carbazole and azobenzene as peripheral functionality and porphyrin as a core center. It’s difficult to synthesize a light-harvesting dendrimer, we try to solve the problem by using self-assembled of carbazole dendrimers, but we were failed in this experiment. On the other hand, E form azobenzene dendrimers were switched to Z form by light excitation. Cyclic voltammograms show the effects of isomerzation and dendrimers generation on site isolation of core moieties.