乳化剂OP/水-氯化银体系光散射光谱应用研究

研究了乳化剂ＯＰ／ 水－ 氯化银乳浊体系的共振光散射光谱及其应用， 与其它体系相比， 微乳液体系的增溶能力、增稳效果显著提高． 用共振光散射光谱法测定微量氯离子， 与比浊法等相比， 具有更好的线性关系， 更宽的线性范围， 更高的灵敏度

Synthesis of Thieno［2，3-b］thiophene-diketopyrrolopyrrole-based

设计并合成了一种交叉共轭的(cross-conjugated)缺电子型聚合物单体——二溴代噻吩[2,3-b]并噻吩-吡咯[3,4-c]并吡咯(DPPTTZ)二酮,并将其分别与噻吩(T)、硒吩(Se)和N-甲基吡咯(Py)的双锡试剂进行共聚反应,获得了一类新的供体-受体(D-A)型共轭聚合物光电材料.这类材料分子的最高占有轨道(HOMO)能级较低,因此其光电器件具有较高的开路电压(Voc),稳定性好.此外,它们在紫外-可见光区有较宽的吸收,最大吸收位于波长620 nm附近;能带隙(band gap)小,分别为1.86 e V(p DPPTTZ-T)、1.83 e V(p DPPTTZ-Se)和1.85 e V(p DPPTTZ-Py).器件初步测试结果表明,上述聚合物与PC71BM组成的本体异质结聚合物太阳能电池Voc在0.68~0.81 V之间,能量转化效率(PCE)最高达3.05%(p DPPTTZ-T).Abstract Thieno［2，3-b］thiophene-diketopyrrolopyrrole ( DPPTTZ ) ，a novel cross-conjugated electrondeficient unit，has been synthesized． This unit was brominated and then copolymerized with 2，5- bis( trimethylstannyl) thiophene，2，5-bis ( trimethylstannyl) selenophene and 2，5-bis ( trimethyl-stannyl) -Nmethylpyrrole respectively，via Stille polymerzation， to form three donor-acceptor ( D-A) type copolymers， poly{ 2，5 -bis ( 2-octyldodecyl) -3-［5-( thiophen-2，5-yl) thieno［2，3-b］thiophen-2-yl］- 6-( thieno［2，3-b］ thiophen-2，5 -yl) pyrrolo［3，4 -c］pyrrole-1，4 ( 2H，5 H) -dione} ( pDPPTTZ-T) ，poly{ 2，5 -bis( 2-octyldodecyl) - 3-［5-( selenophen-2，5 -yl) thieno［2，3-b］thiophen-2-yl］-6-( thieno［2，3-b］thiophen-2，5-yl) pyrrolo［3，4-c］ pyrrole-1，4 ( 2H，5 H) -dione} ( pDPPTTZ-Se) and poly{ 2，5-bis( 2-octyldodecyl) -3-［5-( N-methylpyrrole-2， 5-yl) thieno［2，3 -b］thiophen-2-yl］-6-( thieno［2，3 -b］thiophen-2，5 -yl) pyrrolo［3，4 -c］pyrrole-1，4 ( 2H，5 H) - dione} ( pDPPTTZ-Py) ． These polymers exhibit deep HOMO energy levels ( － 5． 26 ～ － 5． 37 eV) ， leading to high open-circuit voltage ( 0． 68 ～ 0． 81 V) in OPV devices，and good stability of the devices towards atmospheric oxygen． The UV-Vis spectra show broad features with long-wavelength absorption maximum around 620 nm and optical band gap of 1． 86 ，1． 83 and 1． 85 eV for pDPPTTZ-T，pDPPTTZ-Se and pDPPTTZ-Py respectively，which give polymers a good overlap of solar spectrum． Bulk heterojunction solar cells were fabricated by blending these polymers with ［6，6］-phenyl-C71-butiric acid methyl ester ( PC71MB) ，and the power conversion efficiency ( PCE) reaches 3． 05% for the as cast pDPPTTZ-T∶ PCBM-based device without optimization，under simulated AM 1． 5 G irradiation of 100 mW/cm2 ．国家自然科学基金(基金号21367004);广西高校人才小高地建设创新团队项目(项目号GJR201147-12)资

Synthesis and Properties of Poly（indenofluorene-triphenylamine） for Organic Field Effect Transistors

设计并合成了一类新的可用于有机场效应晶体管(OFET)的聚合物半导体材料聚(茚并芴-三苯胺)(pIFTPA1~4),通过核磁共振谱和凝胶渗透色谱等对聚合物进行了表征,同时对其场效应薄膜晶体管性能进行了测试.结果表明,这些聚合物形成了无定形半导体膜,在空气中稳定,其载流子迁移率远高于聚三苯胺(pTPA)类材料,其中pIFTPA4载流子迁移率高达4×10-2cm2/(V·s),开关比为106. Novel materials for organic field effect transistor poly（indenofluorene-triphenylamine） （plFTPA1--4） were synthesized and characterized by NMR and gel permeation chromatography（GPC）. The organic field effect transistors （OFETs） based on these polymers were investigated. It was observed that stable amorphous thin films were formed in the devices, with better charge-carrier mobility than poly （triphenylamine） （pTPA）. In four polymers synthesized, plFFPA4 presents the highest hole mobility, as high as 4 ×10^-2 cm2/（V . s）, with an ON/OFF ratio in excess of 10^6.国家自然科学基金(批准号:21267003);广西高校人才小高地建设创新团队项目(批准号:GJR201147-12)资