| ²é¿´: 328 | »Ø¸´: 1 | |||
| ±¾Ìû²úÉú 1 ¸ö ·ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴 | |||
[½»Á÷]
·Òë
|
|||
|
Recent reports have described the placement of substituents onto R-diimine ligands and their effect on the ¦Ò-donating ability to Pd(II) and thus the Lewis acidity of the metal.26,27 In response, we carried out an investigation of the polymerization behavior of a series of Pd(II) R-diimine catalysts bearing substituents in the para-aryl position on the ligand aromatic rings.28 We discovered that this substitution was able to perturb the metal electronics in a regular manner, as evidenced by the remarkably linear correlation observed in the stretching frequencies of the corresponding carbonyl complexes. Furthermore, several trends were observed in the physical properties of the resulting polymers. The introduction of substituents of increasing electron-donating ability led to catalysts that afforded polymers of higher molecular weight, slightly reduced branching density, and a corresponding shift toward less dendritic polymer topologies. In the case of copolymerizations with methyl acrylate, a clear and pronounced trend of increasing acrylate incorporation ratio and overall tolerance to polar functionality was also observed over the range of substitution explored. |
» ²ÂÄãϲ»¶
Ò»Ö¾Ô¸»ªÄÏÀí¹¤´óѧ331·Ö²ÄÁÏÇóµ÷¼Á
ÒѾÓÐ11È˻ظ´
271Çóµ÷¼Á
ÒѾÓÐ40È˻ظ´
Çóµ÷¼ÁѧУ
ÒѾÓÐ3È˻ظ´
332Çóµ÷¼Á
ÒѾÓÐ15È˻ظ´
297Çóµ÷¼Á
ÒѾÓÐ25È˻ظ´
±¾¿ÆÎ÷¹¤´ó 324Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
297¹¤¿Æµ÷¼Á?
ÒѾÓÐ7È˻ظ´
µ÷¼Á
ÒѾÓÐ11È˻ظ´
08¹¤Ñ§ 309·ÖÇóµ÷¼Á
ÒѾÓÐ7È˻ظ´
¸÷λÀÏʦºÃ£¬Çóµ÷¼Á£¬±¾¿Æ211£¬Ò»Ö¾Ô¸Ìì½ò´óѧÉúÎïÓëҽҩѧ˶£¬²îÁ½Ãû¼ȡ¡£
ÒѾÓÐ9È˻ظ´
» ÇÀ½ð±ÒÀ²£¡»ØÌû¾Í¿ÉÒԵõ½:
Î÷°²µç×ӿƼ¼´óѧͨÐŹ¤³ÌѧԺÕÐÊÕ ¡°·ÇÈ«ÈÕÖÆ µ÷¼ÁÉú¡°
+2/42
¼ÃÄÏ´óѧ »·¾³¿ÆÑ§ »·¾³¹¤³Ì ˶ʿÕÐÉú µ÷¼Á ÐÅÏ¢
+1/41
Î÷°²¿Æ¼¼´óѧÁ¦Ñ§Ïµ¿É½ÓÊÜÁ¦Ñ§¡¢»úе¡¢ÍÁľ¼°Ïà¹Ø¹¤¿Æ×¨Òµµ÷¼Á
+1/40
¸£½¨Àí¹¤´óѧÕÐÊÕ»·¾³¡¢»¯¹¤¡¢ÄÜÔ´¶¯Á¦¡¢ÐÂÄÜÔ´¿ÆÑ§Ó빤³Ì¡¢²ÄÁÏ¡¢»úеµÈѧ¿Æ±³¾°
+1/37
±±¾©Àí¹¤´óѧ£¨Ö麣£©ÕÐÊÕÈ˹¤ÖÇÄÜ·½Ïò26¼¶²©Ê¿
+1/21
ºÓ±±´óѧÑàÂó»ùÒò×éѧÓë·Ö×ÓÓýÖÖ¿ÎÌâ×éÕÐÊÕ2026¼¶¿¼Ñе÷¼ÁÉú
+1/17
AIRS΢ÄÉ»úÆ÷ÈËÖÐÐijÏÕÐÑо¿ÐÍ˶ʿÉú£¨Mphil£©¡¢È«Ö°¿ÆÑÐÖúÀí£¨RA£©¡¢ÊµÏ°Éú£¨Intern£
+1/14
Õã½Å©ÁÖ´óѧ ÁÖÒµÓëÉúÎï¼¼ÊõѧԺ ÉúÎïѧ(ÉúÎﻯѧÓë·Ö×ÓÉúÎïѧ) µÚ¶þÂÖµ÷¼ÁÉúÕÐÉú
+1/13
¸´ÊÔµ÷¼Á-ÕÐÊÕµ÷¼ÁÉú£¨Ò»Ö¾Ô¸07¿ªÍ·×¨Òµ£©£¬º£ÑóÉúÎïרҵ4¸öÃû¶î
+1/10
ÄÏ»ª´óѧ×ÊÔ´»·¾³×¨Ë¶ºÍ»·¾³¿ÆÑ§Ó빤³Ìѧ˶Óе÷¼ÁÃû¶î
+1/9
¹ã¶«Ê¯ÓÍ»¯¹¤Ñ§ÔºÉúÎïÓëҽҩר˶ÈÔÓв¿·Öµ÷¼ÁÃû¶î£¬»¶ÓÅ©£¬¹¤£¬ÀíºÍҽѧµÄͬѧµ÷¼Á¡£
+1/9
Õã½Å©ÁÖ´óѧ ÁÖÒµÓëÉúÎï¼¼ÊõѧԺ ÉúÎïѧ(ÉúÎﻯѧÓë·Ö×ÓÉúÎïѧ) µÚ¶þÂÖµ÷¼ÁÉúÕÐÉú
+1/8
ÖйúÒ©¿Æ´óѧ³Â´ïÍþ¿ÎÌâ×é³ÏƸ²©Ê¿ºó
+1/8
¡¾»ªÖпƼ¼´óѧ¡¿¡¾¹ÜÀíѧԺ¡¿¡¾ÎâÇ컪½ÌÊÚÍŶӡ¿¡¾ÕÐÊÕ2-3Ãû²©Ê¿ºó¡¿
+1/7
Postdoc position in continuum mechanics of brain tissue at KTH in Stockholm
+1/7
Î÷°²¹¤³Ì´óѧ»·¾³Ó뻯ѧ¹¤³ÌѧԺѧ˶µ÷¼Á£¨×¨Ë¶¿Éµ÷ѧ˶£©
+1/5
°²»Õ¹¤³Ì´óѧ»¯Ñ§Óë»·¾³¹¤³ÌѧԺ2026¼¶Ë¶Ê¿Ñо¿Éú»¹Óв¿·Öµ÷¼ÁÃû¶î-×ÊÔ´Óë»·¾³×¨Ë¶
+1/4
¼ÃÄÏ´óѧ2026Äê˶ʿÑо¿ÉúÕÐÉúÔ¤µ÷¼Á¹«¸æ
+1/1
ÀöˮѧԺ²ÄÄÜѧԺ-ÏȽøÄÜÔ´´æ´¢ÓëÆ÷¼þ¿ÎÌâ×é-26½ìÑо¿ÉúÕÐÉú-£¨ÐÂÄÜÔ´µç³Ø·½Ïò£©
+1/1
º£ÄÏ´óѧԬÓíÁÁÀÏʦÕÐÊÕµÚ¶þÅú²©Ê¿£¬Ãû¶î1¸ö£¬2026Äê9Ô·ÝÈëѧ£¨µç½â£¨º££©Ë®ÖÆÇ⣩
+1/1
crazybioinfo
½ð³æ (ÕýʽдÊÖ)
- ·ÒëEPI: 17
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 1211.9
- Ìû×Ó: 825
- ÔÚÏß: 203.2Сʱ
- ³æºÅ: 1122986
¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
wangxh1984(½ð±Ò+2, ·ÒëEPI+1): 2011-03-16 15:49:17
ringzhu(½ð±Ò+38): ~~ 2011-03-22 12:37:02
wangxh1984(½ð±Ò+2, ·ÒëEPI+1): 2011-03-16 15:49:17
ringzhu(½ð±Ò+38): ~~ 2011-03-22 12:37:02
½ö¹©²Î¿¼ ×î½üµÄ±¨µÀÃèÊöÁËR-¶þÑǰ·ÅäÌåÉÏÈ¡´ú»ùµÄλÖü°ÆäÓ°Ïì¶Ô¶þôÇ»ù¾ÛÃÑ(II)¦Ò-¹±Ï×µÄÄÜÁ¦,½ø¶øÓ°Ïì½ðÊôµÄÁõÒ×˹Ëá¶È¡£ ×÷Ϊ»ØÓ¦£¬ÎÒÃǶÔһϵÁеÄÔÚÅäÌå·½»·µÄ·¼»ù¶Ôλ´æÔÚÈ¡´ú»ùµÄ¶þôÇ»ù¾ÛÃÑ(II)R-¶þÑǰ·´ß»¯¼ÁµÄ¾ÛºÏ×÷ÓÃ×÷Á˵÷²é¡£ ÎÒÃÇ·¢ÏÖÕâÖÖÈ¡´ú»ùÄܹ»ÓйæÂɵÄÈŶ¯½ðÊôµç×Ó£¬ÒòΪÔÚÏàÓ¦ôÊ»ù¸´ºÏÌåµÄÉìչƵÂÊÖй۲쵽Ã÷ÏÔµÄÏßÐÔÏà¹ØÐÔ¡£ÁíÍ⣬ÔÚËùµÃ¾ÛºÏÎïµÄÎïÀíÐÔÖÊÖÐÒ²¹Û²ìµ½¼¸ÖÖÇ÷ÊÆ¡£Äܹ»ÔöÇ¿µç×Ó¹±Ï×ÄÜÁ¦µÄÈ¡´ú»ùµÄÒýÈ룬µ¼Ö´߻¯¼ÁÌṩ¾ßÓиü¸ß·Ö×ÓÁ¿µÄ¾ÛºÏÎÏÔÖø¼õÉÙ·ÖÖ¦Ãܶȣ¬ÒÔ¼°ÏàÓ¦µÄת±äΪ½ÏµÍÊ÷×´¾ÛºÏÎïµÄÍØÆËÐÔÖÊ¡£ÔÚÓë±ûÏ©Ëá¼×õ¥µÄ¹²¾ÛºÏ×÷ÓÃÖУ¬ÇåÎúÏÔÖøµÄÔöÇ¿Ç÷ÊÆÔÚ±ûÏ©ËáÑκϲ¢ÂÊÒÔ¼°ÔÚÑо¿µÄÌæ»»·¶Î§ÄÚ¶Ô¼«ÐÔ¹¦ÄܵÄÕûÌåÈݶÈÖж¼ÓÐËù³ÊÏÖ¡£ |
2Â¥2011-03-14 19:14:43














»Ø¸´´ËÂ¥