±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 224  |  »Ø¸´: 4
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

zhchd2008

½ð³æ (СÓÐÃûÆø)

[½»Á÷] Çó·­Òë

¸ßÊÖ°ïæ·­ÒëÁË£¬ÒªÄÜͨ˳¡£Ð»Ð»


Fluorescence properties of 2 and 4
The ligand-assisted photoluminescence properties of the lanthanide compounds 2 and 4 were examined at room temperature.When excited at 335 nm, 2 emits red light, while 4 shows green light emission upon excitation at 334 nm.The photoluminescence spectra are shown in Fig.4.The characteristic emission bands of 2 at 584, 598, 622,and 693 nm are assigned to 5D0 ¡ú 7FJ (J =0,1,2, and 4) transitions,while the emission peaks of 4 at 495, 548, 590,and 625 nm can be attributed to 5D4¡ú7FJ (J =6,5,4,and3) transitions,respectively.However,these characteristic emission bands indicate that the ligand-to-metal energy transfer is moderately efficient under the experimental conditions.It is noted that the forbidden transition 5D0 ¡ú 7F0 was also observed in the europium compound 2.Moreover,the preferred transition,5D0¡ú7F2 for europium-containing luminescent materials,is much more intense than the 5D0¡ú7F1 transition in 2.It is well-known that the 5D0¡ú7F2 transition induced by the electric dipole moment is hypersensitive to the environment of the Euion,while the 5D0¡ú7F1 transition is a magnetic dipole transition which is fairly insensitive to the coordination environment of the Euion.The intensity ratio I(5D0¡ú7F2)/I(5D0¡ú7F1) is equal to 3.57,which indicates that Eu3+ ions are not at an inversion center [12a].This is in agreement with the result of the single crystal X-ray diffraction.

» ²ÂÄãϲ»¶

ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

resonant

ľ³æ (ÕýʽдÊÖ)

¶À×ÔΪÕþ

Õâ¸ö×÷ÕßÊÇÖйúÈËô£¿ÒªÊǵϰ£¬¿´¿´cnkiÉÏÓÐûÓÐËûÃǵĶ«Î÷ÄØ£¿¶Ô±ÈһϻòÐí¾ÍÖªµÀ¿©
½»ÅóʶÓÑ£¬ÃÍ¸ã¿ÆÑС£Á½ÊÖ×¥£¬Á½ÊÖ¶¼ÒªÓ²¡£
2Â¥2010-04-13 12:50:14
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zhchd2008

½ð³æ (СÓÐÃûÆø)

sirljz:Åå·þ 2010-04-13 13:56
cnkiÊÇʲô°¡£¿
3Â¥2010-04-13 12:58:53
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

resonant

ľ³æ (ÕýʽдÊÖ)

¶À×ÔΪÕþ

ÒýÓûØÌû:
Originally posted by zhchd2008 at 2010-04-13 12:58:53:
cnkiÊÇʲô°¡£¿

ÖйúÖªÍø£¬ÎÒÊÇ˵ÄãÕÒÆªËûÃÇ×éÖÐÎĵĿ´¿´£¬´ó¸Å¾ÍÄÜÖªµÀÔõô»ØÊÂÁË
½»ÅóʶÓÑ£¬ÃÍ¸ã¿ÆÑС£Á½ÊÖ×¥£¬Á½ÊÖ¶¼ÒªÓ²¡£
4Â¥2010-04-13 13:16:29
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

kongxiangshi

½ð³æ (СÓÐÃûÆø)

zhchd2008(½ð±Ò+2, ·­ÒëEPI+1): 2010-04-13 16:56
2ºÍ4µÄÓ«¹âÐÔÖÊ
ÔÚÊÒÎÂϼì²âï绯Îï2ºÍ4µÄÅä»ù¸¨Öú¹âÖ·¢¹âÌØÐÔ¡£µ±¼¤·¢²¨³¤ÔÚ335£¬2·¢³öºì¹â£¬¶ø4ÏÔʾÁËÂÌÉ«µÄ¹â¼¤·¢¹â¹âÆ×ÔÚ334 nm¡£4ÏÔʾÂ̹ⷢÉ䡣ͼ4¸ø³öÁ˹âÖ·¢¹â¹âÆ×¡£·Ö±ðµØ£¬2µÄÌØÕ÷·¢Éä´øÎª584, 598, 622,ºÍ693 nm¿É±»·ÖÅäµ½5D0 ¡ú 7FJ (J =0,1,2, ºÍ4) ԾǨ£¬4µÄ·¢Éä·åÔÚ495, 548, 590,ºÍ625 nm´¦¿É¹éÒòÓÚ5D4¡ú7FJ (J =6,5,4,and3)ԾǨ¡£È»¶øÕâÐ©ÌØÕ÷·¢Éä´ø±íÃ÷ÔÚʵÑéÌõ¼þÏ£¬Åä»ùµ½½ðÊôµÄÄÜÁ¿×ªÒÆÊÇκÍÓÐЧÂʵġ£Ó¦µ±×¢Ò⣬ÔÚîð»¯Îï2ÖÐÒ²¹Û²ìµ½Á˽ûÖ¹µÄ5D0 ¡ú 7F0 ԾǨ¡£¸üÓÐÉõÕߣ¬ÔÚ2ÖУ¬¶ÔÓÚº¬îð·¢¹âÎïÖÊ£¬¿ÉÑ¡µÄԾǨ5D0¡ú7F2 ´¦±È5D0¡ú7F1 Ç¿ÁҵĶࡣÖÚËùÖÜÖª£¬±»µçż¼«¾ØÓÕµ¼µÄ5D0¡ú7F2 ԾǨ¶ÔEuion»·¾³³¬Ãô¸Ð£¬È»¶ø£¬5D0¡ú7F1 ԾǨÊÇÒ»ÖÖ´Åż¼«Ô¾Ç¨£¬¶ÔEuionµÄЭµ÷»·¾³Ï൱²»Ãô¸Ð¡£I(5D0¡ú7F2)/I(5D0¡ú7F1) µÄÇ¿¶È±ÈÂÊÊÇ3.57£¬±íÃ÷Eu3+ÑôÀë×Ó²»ÔÚ·´ÉìÖÐÐÄ¡£ÕâÓëµ¥¾§X -ÉäÏßÑÜÉä½á¹ûÒ»Ö¡£
5Â¥2010-04-13 16:31:34
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ zhchd2008 µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] µç×ÓÐÅÏ¢µ÷¼Á½»²æÑ§¿ÆÓÐÍÆ¼öÂð +4 jhtfeybgj 2026-04-01 6/300 2026-04-04 00:14 by Öí»á·É
[¿¼ÑÐ] ¿¼Ñе÷¼Á +3 15615482637 2026-04-03 3/150 2026-04-03 22:50 by ms629
[¿¼ÑÐ] Ò»Ö¾Ô¸½­ÄÏ´óѧ085501»úе¹¤³Ìר˶326·Ö£¬±¾¿Æ¼Ñľ˹´óѧ +4 ¹ËÈô¸¡Éú 2026-04-03 8/400 2026-04-03 22:31 by zhq0425
[¿¼ÑÐ] 0710ÉúÎïѧ336·ÖÇóµ÷¼Á +5 kiyy 2026-04-01 5/250 2026-04-03 21:35 by kk112233
[¿¼ÑÐ] 335Çóµ÷¼Á +7 ÉòÇåÁ§ 2026-04-03 7/350 2026-04-03 18:55 by lijunpoly
[¿¼ÑÐ] 310Çóµ÷¼Á +18 ÕùÈ¡¾Åµã˯ 2026-03-30 18/900 2026-04-03 18:35 by lsÁõ˧
[¿¼ÑÐ] 321Çóµ÷¼Á +10 ÈÏÕæÇóÉÏѧ 2026-04-02 10/500 2026-04-03 16:17 by lijunpoly
[¿¼ÑÐ] 274Çóµ÷¼Á +9 ˳Àí³ÉÕÅ 2026-04-03 10/500 2026-04-03 15:10 by °¡¿¡£¡
[¿¼ÑÐ] ²ÄÁÏר˶ µ÷¼Á +11 CXN123456 2026-04-03 11/550 2026-04-03 14:09 by 1753564080
[¿¼ÑÐ] ±§Ç¸ +5 ÌïºéÓÐ 2026-03-30 5/250 2026-04-03 10:24 by linyelide
[¿¼ÑÐ] »·¾³285·Ö£¬¹ýÁù¼¶£¬Çóµ÷¼Á +9 xhr12 2026-04-02 9/450 2026-04-03 10:23 by »¯Ñ§»¯¹¤Ë¶Ê¿ÕÐÉ
[¿¼ÑÐ] Ò»Ö¾Ô¸´ó¹¤Ñ§Ë¶£¬Çóµ÷¼Á +4 yub0811 2026-04-02 4/200 2026-04-02 21:36 by °ÙÁéͯ888
[¿¼ÑÐ] 318Çóµ÷¼Á£¬¼ÆËã²ÄÁÏ·½Ïò +10 Îüß÷Óк¦óÏÃü 2026-04-01 11/550 2026-04-02 16:29 by oooqiao
[¿¼ÑÐ] 314Çóµ÷¼Á +11 1xiaojun23 2026-03-31 12/600 2026-04-02 12:31 by 1xiaojun23
[¿¼ÑÐ] 085900ÍÁľˮÀû336·ÖÇóµ÷¼Á +4 Zhangjiangj 2026-03-31 6/300 2026-04-02 11:40 by 1753564080
[¿¼ÑÐ] ²ÄÁÏÓ뻯¹¤£¨0856£©304ÇóBÇøµ÷¼Á +8 Çñgl 2026-03-30 16/800 2026-04-01 17:58 by Çñgl
[¿¼ÑÐ] 267Çóµ÷¼Á +13 uiybh 2026-03-31 13/650 2026-04-01 10:25 by ̽123
[¿¼ÑÐ] 301Çóµ÷¼Á +8 axibli 2026-04-01 8/400 2026-04-01 09:51 by ÎҵĴ¬Îҵĺ£
[¿¼ÑÐ] Ò»Ö¾Ô¸Î÷½»´ó080500²ÄÁÏѧ˶349 +6 jqx1258 2026-03-31 7/350 2026-03-31 21:08 by yuq
[¿¼ÑÐ] 0856Çóµ÷¼Á +9 —öèñ 2026-03-28 9/450 2026-03-31 19:06 by ĺÔó12
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û