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合成了外围修饰有萘基团的0～3代聚酰胺-胺树枝形聚合物GnN(n=0～3),化合物通过了IR,1HNMR,13CNMR和MALDITOF的表征.稳态光物理研究表明,甲醇溶液中GnN外围萘基团与骨架胺之间发生电子转移过程,形成最大发射峰在450nm的激基复合物,萘的荧光被明显猝灭;当GnN骨架被质子化,分子内光致电子转移过程和萘与骨架胺基间激基复合物的形成被抑制,萘单体荧光发射大大增强;由于质子化后树枝形聚合物骨架趋于伸展构象,外围萘基团间相互作用增强,部分形成最大发射峰在400nm的激基缔合物.
The 0 ~ 3 polyamidoamine dendrimers GnN (n = 0 ~ 3) were synthesized and their compounds were characterized by IR, 1HNMR, 13CNMR and MALDITOF. The steady- Methanol solution GnN peripheral naphthalene groups and the skeleton of the amine electron transfer between the process to form the maximum emission peak at 450nm exciplex complex, naphthalene fluorescence was significantly quenched; when the GnN skeleton is protonated, intramolecular photo-electron The transfer process and the formation of the naphthalene-skeleton amine-based exciplex are inhibited and the naphthalene monomer fluorescence emission is greatly enhanced. As the protonated dendrimer skeleton tends to expand conformation, the interaction between the peripheral naphthalene groups is enhanced and part An excimer is formed with a maximum emission peak at 400 nm.