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中文摘要：
通过双官能度异氰酸酯基单体MDI（A2）与三官能度羟基偶氮单体（B3）的缩聚反应，得到了超支化偶氮聚氨酯，利用核磁共振、热分析、紫外．可见光谱、红外光谱、GPC等方法对其结构和性能等进行了详细表征．该聚合物在干涉的p偏振Ar^＋激光照射下，可得到周期性规则的正弦波形表面起伏光栅．
英文摘要：
A hyperbranched azo polyurethane was synthesized by an A2 type monomer MDI and a B3 type monomer 4-（ N, N＇-bis（2-hydroxyethyl））amino-2＇-hydroxyethoxyl-4＇-nitryl-azobenzene .The azo polymer was characterized by ^1H-NMR, UV-Vis spectrum and thermal analysis. The λmax of the polymer in DMF solution was determined to be 488 nm.The number average molecular weight determined by GPC is Mn = 9300 with a polydispersion index 1.9. The glass transition temperature （ Tg ） of the polymer is 131 ℃ determined from DSC thermogram. The results showed the azo polyurethane has been successfully synthesized through this scheme. Surface-relief-gratings （SRGs） were observed on the polymer film after irradiated by an interference pattern of Ar^＋ laser beam for 1000 s. The surface modulation depth and the grating spacing were measured by AMF to be 67 nm and 770 nm, respectively.
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Azo Polymer Microspherical Cap Array: Soft-lithographic Fabrication and Photoinduced Shape Deformati
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Size-Dependent Light-Driven Effect Observed for Azo Polymer Colloidal Spheres with Different Average
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Photoinduced Mass-Migration Behavior of Two Amphiphilic Side-Chain Azo Diblock Copolymers with Diffe
Polyimides with main-chain photosensitive groups: Synthesis, characterization and their properties a
Photoresponsive layer-by-layer ultrathin films prepared from a hyperbranched azobenzene-containing p
Amphiphilic block copolymers bearing strong push-pull azo chromophores: Synthesis, micelle formation
The photoinduced surface-relief-grating formation behavior of side-chain azo polymers with narrow M-
Fabrication of photoresponsive electrostatic multilayers containing diazonium-hyperbranched azo poly
Electrostatic layer-by-layer self-assembly on colloidal spheres and capsules composed of azo polyele
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Photoinduced Polarization Gratings in Molecular Glass Containing Azobenzene and Chiral Isosorbide Mo
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Reversible Photocontrolled Swelling-Shrinking Behavior of Micron Vesicles Sel-assembled from Azopyri
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