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appleyankai: ½ð±Ò+20, ¡ï¡ï¡ïºÜÓаïÖú 2015-06-18 17:17:14
appleyankai: ½ð±Ò+20, ¡ï¡ï¡ïºÜÓаïÖú 2015-06-18 19:09:44
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appleyankai

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3Â¥: Originally posted by ÒÀϡҹÃÎ at 2015-06-17 18:53:01
µÚÒ»£¬ÄãÓõØÊÇY×÷Ϊhost£¬YÔÚµÍÎÂ300ÒÔÏÂÉú³¤±È½ÏÂý£¬Èç¹ûÒª³¤µ½30 nmζȴó¸ÅÔÚ310ÒÔÉÏ¡£µÚ¶þ£¬·´Ó¦Ê±¼ä²»¹»30 nmÒÔÉϵÄÉÏת»»ÄÉÃ׿ÅÁ£·´Ó¦Ê±¼äÒ»°ãÔÚ90 minÒÔÉÏ¡£µÚÈý£¬ÉÏת»»µÄ¼¼ÊõÆäʵ²¢²»ÊǺܳÉÊ죬²»Í¬ÊµÑéÊÒ ...

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5Â¥2015-06-18 19:11:56
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appleyankai: ½ð±Ò+10, ¡ï¡ï¡ïºÜÓаïÖú 2015-06-20 12:50:41
ÆäʵºÜ¼òµ¥£¡ÎÒÖªµÀÄãÄÇÀïûÓÐ×öºÃ£¡¾ßÌåµÄ²Î¼ûÁõÏþ¸ÕnatureµÄһƪÎÄÕ£¡preparation of core-shell NaGdF4 nanoparticles doped with luminescent lanthanide ions to be used as upconversion-based probes
Feng Wang, Renren Deng, and Xiaogang Liu
Nature Protocols 9 p1634 - p1644 12/06/2014 doi:10.1038/nprot.2014.111
ÀïÃæÒ»²½Ò»²½Ôõô×ö£¬Ê±¼ä£¬Î¶ȣ¬µÈµÈ¸÷¸öÒòËØ£¬ÇåÇå³þ³þÃ÷Ã÷°×°×£¡Á¬»á³öÏÖµÄÎÊÌⶼдµÄÃ÷Ã÷°×°×£¡
6Â¥2015-06-18 21:48:00
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5Â¥: Originally posted by appleyankai at 2015-06-18 19:11:56
Îҵķ´Ó¦Î¶ÈÊÇ320£¬¶øÇÒ·´Ó¦Ê±¼ä90·ÖÖÓ£¬²»ÖªµÀΪʲô¾§Á£Ã»Óг¤ºÃ¡£...

Äã²ÎÕÕÕâÆªÈ¥ºÏ³É£¬Ò»²½¶¼²»Òª´í£¬¿Ï¶¨ÄܺϳɳöÀ´£¬ÁõС¸ÕËäÈ»ÊÇÉÏת»»·Ç³£´óµÄ´óÄ㬵«ÊǺܶàËûÔÚÎÄÕÂÖж¼Ê¡ÂÔÁË¡£Single nanocrystal sensitivity achieved by enhanced upconversion£»nature nanotechnology£»2013
Upconverting NaYF4:Yb/Tm nanocrystals were synthesised using an organometallic method described
previously1,2. Briefly, 5 mL of methanol solution of LnCl3 (1.0 mmol, Ln = Y, Yb, Tm/Er) was magnetically
mixed with 6 mL OA and 15 mL ODE in a three-neck round-bottom flask. The resulting mixture was heated at
150 ¡ãC under argon flow for 30 min to form a clear light yellow solution. After cooling down to 50 ¡ãC, 10 mL
of methanol solution containing 0.16 g NH4F and 0.10 g NaOH was added with vigorous stirring for 30 min.
Then, the slurry was slowly heated and kept at 110 ¡ãC for 30 min to remove methanol and residual water. Next,
the reaction mixture was protected with an argon atmosphere, quickly heated to 305 ¡ãC and maintained for 1.5
h. The products were isolated by adding ethanol, and centrifuged without size-selective fractionation. The final
NaYF4:Yb/Tm nanocrystals were redispersed in cyclohexane with 5 mg/mL concentration after washing with
cyclohexane/ethanol several times.
7Â¥2015-06-18 22:10:54
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ÒÀϡҹÃÎ

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ÒýÓûØÌû:
5Â¥: Originally posted by appleyankai at 2015-06-18 19:11:56
Îҵķ´Ó¦Î¶ÈÊÇ320£¬¶øÇÒ·´Ó¦Ê±¼ä90·ÖÖÓ£¬²»ÖªµÀΪʲô¾§Á£Ã»Óг¤ºÃ¡£...

»òÕß²ÎÕÕ¸Õ³öÀ´µÄһƪCompact, Programmable, and Stable Biofunctionalized Upconversion Nanoparticles Prepared through Peptide-Mediated Phase Transfer for High-Sensitive Protease Sensing and in Vivo Apoptosis Imaging£»ACS applied material inferfaces
Briefly, 5 mL of methanol solution of LnCl3(1.0 mmol, Ln = Y, Yb,
and Tm/Er) was mixed with 6 mL of OA and 15 mL of ODE in a
three-neck round-bottom flask. The resulting mixture was heated at
150 ¡ãC under argon flow for 30 min to form a clear light yellow
solution. After cooling to 50 ¡ãC, 10 mL of methanol solution containing
0.1480 g of NH4F and 0.10 g of NaOH was added and the solution was
vigorously stirred for 30 min. Then, the slurry was slowly heated and
kept at 110 ¡ãC for 10 min to remove methanol. Next, the reaction
mixture was protected with an argon atmosphere, quickly heated to
310 ¡ãC (about 15 ¡ãC min−1), and maintained for 1.5 h. The products
were isolated by adding ethanol and centrifuged without size-selective
fractionation. The final NaYF4:20% Yb, 2% Er or NaYF4:25% Yb, 0.5%
Tm nanocrystals were redispersed in chloroform with a 5 mg mL−1
concentration after washing with chloroform/ethanol (1:1) 3 times
8Â¥2015-06-18 22:13:33
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»ØÊÕÕ¾123

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
3Â¥: Originally posted by ÒÀϡҹÃÎ at 2015-06-17 18:53:01
µÚÒ»£¬ÄãÓõØÊÇY×÷Ϊhost£¬YÔÚµÍÎÂ300ÒÔÏÂÉú³¤±È½ÏÂý£¬Èç¹ûÒª³¤µ½30 nmζȴó¸ÅÔÚ310ÒÔÉÏ¡£µÚ¶þ£¬·´Ó¦Ê±¼ä²»¹»30 nmÒÔÉϵÄÉÏת»»ÄÉÃ׿ÅÁ£·´Ó¦Ê±¼äÒ»°ãÔÚ90 minÒÔÉÏ¡£µÚÈý£¬ÉÏת»»µÄ¼¼ÊõÆäʵ²¢²»ÊǺܳÉÊ죬²»Í¬ÊµÑéÊÒ ...

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