Znn3bq.jpeg
²é¿´: 935  |  »Ø¸´: 1
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

cybusun

½ð³æ (СÓÐÃûÆø)

[ÇóÖú] Ó¢ÎĶÎÂä·­Òë

±¾ÈËÓ¢ÓïˮƽÓÐÏÞ£¬²»ÊǺÜÃ÷°×ÏÂÃæ¶ÎÂäÊÇʲôÒâ˼£¬ÍûÄÄλ°ïæ·­ÒëÏ£¬Ð»Ð»£¡
Theoretical calculations performed by Honeybourne on closed-shell conjugated macrocyclic ligands placed in perfectly linear columnar stacks, with an interplanar spacing of 0.373 nm, pointed out that both metal-free phthalocyanines£¨ÌªÝ¼£© and hemiporphyrazines£¨°ë×ϲËຣ©,because of the large bandgaps, must show low ¨® values at room temperature when undoped, i.e., they will not act as intrinsic semiconductors. However, these results are extremely distance-dependent,
and narrower bandgaps and larger bandwidths could be obtained by reducing the interplanar distance. Moreover, by taking into account the fact that the conductivity of the macrocycles is usually very low until donor-acceptor interactions occur, the studies were extended to open-shell (radical ions) systems.
The calculations for two spacing distances (0.373 and 0.332 nm) showed that the metal-free phthalocyanine displays larger bandwidths and narrower bandgaps
than the corresponding hemiporphyrazines£¨°ë×ϲËຣ©. Indeed, the H2Thp radical anion does not have at 0.373 nm the minimum bandwidth required to ensure enough mobility of the charge carriers.

» ²ÂÄãϲ»¶

ÿ¸öÈËÓÐ×Ô¼ºµÄÉú»î£¬ÎÒϲ»¶ÎÞ¾ÐÎÞÊø£¬×ÔÓÉ×ÔÔÚ£¡
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÌýÌÎÔÂÓê

½ð³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡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
°®ÓëÓêÏÂ: ½ð±Ò+1 2012-03-26 21:55:50
cybusun: ½ð±Ò+25, ·­ÒëEPI+1, ¡ïÓаïÖú 2012-03-27 08:52:33
Honeybourne½øÐÐÀíÂÛ¼ÆËãÖ¸³ö£¬±Õ»·´ó»·¹²éîÅäÌåºÜºÃµÄǶÔÚÏßÐÔÖù×´¶Ñµþ£¨Ò»ÖÖ¾§°û¶Ñµþ·½Ê½£¿£©£¬Ãæ¼ä¾àÊÇ0.373ÄÉÃ×£»ÎÞ½ðÊôÅä»ùµÄ̪ݼºÍ°ë×ϲËຣ¬ÓÉÓÚËüÃǾßÓдóµÄÄÜ´øÏ¶£¬ÔÚÎÞ²ôÔÓµÄÇé¿öϱØÈ»±íÏÖ³öµÍÅ·Ä·Öµ£¬Ò²¾ÍÊÇ˵ËüÃDz»»á³äµ±¾«Ãܵİ뵼Ì塣Ȼ¶ø£¬ÕâЩ½á¹û¶¼ÊǼ«ÆäÒÀÀµ¾àÀëµÄ£¬Í¨¹ý¼õС¾§Ãæ¾à¿ÉÒÔ»ñµÃÕ­ÄÜ´øÏ¶ºÍ´óµÄƵ¿í¡£´ËÍ⣬¿¼Âǵ½µÄ´ó»·»¯ºÏÎïµÄµçµ¼ÂÊͨ³£ÊǷdz£µÍµÄ£¬³ý·ÇÌå - ÊÜÌå·¢ÉúÏ໥×÷Óã¬Ñо¿À©´ó×ÔÓÉ»ùÀë×Óϵͳ¡£
Á½¸ö¾§Ãæ¾àÀ루0.373ºÍ0.332 nm£©µÄ¼ÆËã±íÃ÷£¬ÎÞ½ðÊô̪ݼ£¨±ÈÏàÓ¦µÄhemiporphyrazines°ë×ϲËຣ©ÏÔʾ¸ü´óµÄ´ø¿íºÍÕ­ÄÜ϶¡£ÊÂʵÉÏ£¬H2ThpµÄÒõÀë×Ó×ÔÓÉ»ùûÓÐÔÚ0.373ÄÉÃ×ËùÐèµÄ×îСƵ¿í£¬ÒÔÈ·±£µçºÉÔØÌå×ã¹»µÄÁ÷¶¯ÐÔ¡£
Óö¼û¸üºÃµÄ×Ô¼º
2Â¥2012-03-26 21:07:48
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ cybusun µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Çóµ÷¼Á£¬Ò»Ö¾Ô¸´óÁ¬Àí¹¤´óѧ354·Ö +5 ÓêÉùÓàÉú 2026-04-11 6/300 2026-04-11 16:12 by ÓêÉùÓàÉú
[¿¼ÑÐ] 085501»úеר˶ 302·Ö ²»ÌôרҵÇóµ÷¼Á +7 Íôij. 2026-04-09 7/350 2026-04-11 14:37 by luhong1990
[¿¼ÑÐ] ÉúÎïѧµ÷¼Á +8 СȽҪŬÁ¦ 2026-04-10 9/450 2026-04-11 10:22 by wwj2530616
[¿¼ÑÐ] 22408 352·ÖÇóµ÷¼Á0854Àà +4 ŬÁ¦µÄÏÄÄ© 2026-04-09 4/200 2026-04-11 09:57 by zhq0425
[¿¼ÑÐ] ÉúÎïѧ308Çóµ÷¼Á£¨Ò»Ö¾Ô¸»ª¶«Ê¦´ó£© +6 ÏàÐűػá¹ââÍòÕ 2026-04-10 6/300 2026-04-11 05:23 by zhuwenxu
[¿¼ÑÐ] 083200 305·Ö Çó¶þÂÖµ÷¼Á ²»½ÓÊÜ¿çרҵ +9 Claireyyyy 2026-04-09 10/500 2026-04-10 21:21 by Claireyyyy
[¿¼ÑÐ] 289 ·Ö105500ҩѧר˶Çóµ÷¼Á(ÕÒBÇøÑ§Ð£) +6 °×ÔÆ123456789 2026-04-09 8/400 2026-04-10 21:13 by zhouxiaoyu
[¿¼ÑÐ] 292Çóµ÷¼Á +9 ЦЦԬ 2026-04-09 9/450 2026-04-10 10:05 by LHGeng
[¿¼ÑÐ] ÉúÎïѧµ÷¼Á£¬Ò»Ö¾Ô¸Î÷ÄÏ´óѧ348£¬TopÆÚ¿¯Ò»Çø¶þ×÷¡¢¶þÇøÈý×÷£¬ÈýµÈ½±Ñ§½ðÈý´Î +4 candyyyi 2026-04-09 4/200 2026-04-09 18:39 by l_paradox
[¿¼ÑÐ] 348Çóµ÷¼Á +3 candyyyi 2026-04-09 3/150 2026-04-09 17:20 by ¶ÎΰÑÞ
[¿¼ÑÐ] 337Çóµ÷¼Á +4 Gky09300550£¬ 2026-04-09 4/200 2026-04-09 17:18 by ÅÁ¶ûÂíÀ­ÌØ
[¿¼ÑÐ] ¶þ´Îµ÷¼ÁÇóÀÏʦÊÕÁô +3 ЦЦԬ 2026-04-08 3/150 2026-04-08 23:50 by ×íÔÚ·çÀï
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤×¨Ë¶306·ÖÕÒºÏÊʵ÷¼Á +27 ²×º£ÇáÖÛe 2026-04-06 28/1400 2026-04-08 22:06 by wdyheheeh
[¿¼ÑÐ] 264Çóµ÷¼Á +11 ÂóС¶£µ± 2026-04-07 11/550 2026-04-08 16:05 by Ò»Ö»ºÃ¹û×Ó?
[¿¼ÑÐ] 312Çóµ÷¼Á +4 Say Never 2026-04-04 4/200 2026-04-08 08:41 by barlinike
[¿¼ÑÐ] µ÷¼ÁÇóÖú£¨ÉúÎïÓëÒ½Ò©£© +6 @6952 2026-04-06 6/300 2026-04-07 23:52 by lys0704
[¿¼ÑÐ] 22408 318·ÖÇóµ÷¼Á +4 ÇڷܵÄСÁý°ü 2026-04-06 6/300 2026-04-07 15:05 by Ö½º×555
[¿¼ÑÐ] 081200-11408-367ѧ˶Çóµ÷¼Á +4 1_2_3111 2026-04-06 4/200 2026-04-07 08:13 by jp9609
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©½»Í¨´óѧ²ÄÁϹ¤³Ì×Ü·Ö358Çóµ÷¼Á +4 cs0106 2026-04-04 4/200 2026-04-05 18:46 by imissbao
[¿¼ÑÐ] 326Çóµ÷¼Á +3 ¹ËÈô¸¡Éú 2026-04-05 3/150 2026-04-05 18:32 by À¶ÔÆË¼Óê
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û