应《网络安全法》要求，自2017年10月1日起，未进行实名认证将不得使用互联网跟帖服务。为保障您的帐号能够正常使用，请尽快对帐号进行手机号验证，感谢您的理解与支持！

24小时热门版块排行榜    

小木虫论坛-学术科研互动平台 » 材料区 » 微米和纳米 » 合成表征 » 求助关于量子点的问题
71/1返回列表
查看: 1210  |  回复: 6
只看楼主 @他人 存档 新回复提醒 (忽略) 收藏    在APP中查看

3006213050

铁虫 (小有名气)

[求助] 求助关于量子点的问题

请问各位高手，有哪一种量子点是在500激发，发射峰在600+的位置的
回复此楼

» 收录本帖的淘帖专辑推荐

Fluorescent Nanomaterials

» 猜你喜欢

» 本主题相关价值贴推荐，对您同样有帮助:
1楼 2012-11-15 19:29:55
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

sally208

专家顾问 (著名写手)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★
感谢参与，应助指数 +1
3006213050: 金币+10, ★★★很有帮助 2012-11-16 09:10:40
Since semiconductor QDs possess a wide excitation range, thus as soon as you can have QD with emission above 600 nm, they can serve your purpose '量子点是在500激发，发射峰在600+的位置'.
So you have many choices, such as CdTe, CdSe QDs, you just need to control their core size. Few examples in the literature: http://pubs.rsc.org/en/Content/ArticleLanding/2012/NR/c2nr31809a ; http://pubs.rsc.org/en/Content/ArticleLanding/2011/NR/c1nr10933b ; http://pubs.rsc.org/en/Content/ArticleLanding/2011/NR/c1nr10218d ...

Commercially available Qds from Invitrogen: http://www.invitrogen.com/search ... p;resultsPerPage=15
赞一下(2人) 回复此楼
2楼2012-11-16 00:51:33
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

星汉纳米技术

金虫 (小有名气)

【答案】应助回帖

★ ★ ★ ★ ★
感谢参与，应助指数 +1
3006213050: 金币+5, ★★★很有帮助 2012-11-16 09:10:46
量子点的激发光谱很宽，只要发射是在600nm就可以了。可用CdSe/ZnS
赞一下 回复此楼
3楼2012-11-16 08:48:34
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

3006213050

铁虫 (小有名气)
引用回帖:
2楼: Originally posted by sally208 at 2012-11-16 00:51:33
Since semiconductor QDs possess a wide excitation range, thus as soon as you can have QD with emission above 600 nm, they can serve your purpose '量子点是在500激发，发射峰在600+的位置'.
So you have  ...

Thank you for your useful reference. As we know, the emission of QDs can be near- infrared. However, the excitiation range usually was 400-480 nm. such as your ref.2. Making the 500 nm excitaion was a big problem for me. I wish you can give me some advices.
                                                              Sincerely yours.
赞一下 回复此楼
4楼2012-11-16 09:06:51
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

sally208

专家顾问 (著名写手)
引用回帖:
4楼: Originally posted by 3006213050 at 2012-11-16 02:06:51
Thank you for your useful reference. As we know, the emission of QDs can be near- infrared. However, the excitiation range usually was 400-480 nm. such as your ref.2. Making the 500 nm excitaion was ...

I think it is just a matter of excitation efficiency at different wavelength. It is normal that he more bule the excitation wavelength you choose, the lower brightness will the QDs be. Once you have QDs with large quantum yield (e.g., QY > 20%), I do not think it can be a big issue for your experiment, even in single particle imaging experiment with the common lasers, 488 nm or even 532 nm.
赞一下 回复此楼
5楼2012-11-16 15:21:40
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

sally208

专家顾问 (著名写手)
引用回帖:
5楼: Originally posted by sally208 at 2012-11-16 08:21:40
I think it is just a matter of excitation efficiency at different wavelength. It is normal that he more bule the excitation wavelength you choose, the lower brightness will the QDs be. Once you have ...

a mistake in above reply:
... the more blue the excitation wavelength you chose, the higher brightness will the QDs be ...
赞一下 回复此楼
6楼2012-11-16 18:25:24
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

3006213050

铁虫 (小有名气)
引用回帖:
6楼: Originally posted by sally208 at 2012-11-16 18:25:24
a mistake in above reply:
... the more blue the excitation wavelength you chose, the higher brightness will the QDs be ......

Thank you for your attention
赞一下 回复此楼
7楼2012-11-19 18:25:59
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 3006213050 的主题更新
71/1返回列表
普通表情 龙 兔 虎 猫
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[硕博家园] 极限拉扯，如何抉择 +7 Isak0320 2026-10-12 10/500 2026-10-12 22:38 by 大飞鱼鱼鱼
[基金申请] 入职后第一次管课题组的专利缴费，对账才发现官费比别人多掏了一倍 +6 13108017953 2026-10-08 6/300 2026-10-12 20:07 by w3w3y3
[有机交流] OpenAI又攻克数学难题了，离AI做有机合成还有多远？ +4 wangyl_123 2026-10-10 8/400 2026-10-12 18:09 by wangyl_123
[教师之家] 课题组会帮你通过考核么？ +3 好运来～9527 2026-10-10 6/300 2026-10-12 14:55 by 简单化xn
[公派出国] 售一区SCI文章T0P，我:8O.551.O54,科目全,可十急 +5 qR2AdCWTVtkw 2026-10-09 9/450 2026-10-11 22:34 by XQNyDCa1Tk5n
[公派出国] 售SCI一区文章，我:8O5.5.1.O5.4,科目全,可伽急 +5 qR2AdCWTVtkw 2026-10-09 10/500 2026-10-11 22:26 by XQNyDCa1Tk5n
[找工作] 售SCI一区T0P文章，我:8.O55.1.O.54,科目全,可十急 +5 qR2AdCWTVtkw 2026-10-09 8/400 2026-10-11 22:26 by XQNyDCa1Tk5n
[考博] 售SCI一区T0P文章，我:8.O55.1.O.54,科目全,可十急 +5 qR2AdCWTVtkw 2026-10-09 9/450 2026-10-11 22:15 by XQNyDCa1Tk5n
[考博] 售SCI一区文章，我:8.O.55.1.O.54,科目齐全,可伽急 +3 qR2AdCWTVtkw 2026-10-09 7/350 2026-10-11 22:11 by XQNyDCa1Tk5n
[教师之家] 售SCI文章，我:8O5.5.1.O.54,科目齐全,可+急 (EPI+-1)(金币-50) +5 qR2AdCWTVtkw 2026-10-09 10/500 2026-10-11 22:06 by XQNyDCa1Tk5n
[教师之家] 售SCI一区T0P文章，我:8.O.55.1.O.5.4,科目全,可+急 (EPI+-1)(金币-50) +5 qR2AdCWTVtkw 2026-10-09 10/500 2026-10-11 14:25 by VOMexwnDzOFZ
[教师之家] 售SCI文章，我:8O.5.5.1O.54,科目全,可十急 (EPI+-1)(金币-50) +4 qR2AdCWTVtkw 2026-10-09 7/350 2026-10-11 14:05 by VOMexwnDzOFZ
[考研] 售SCI文章，我:8O.5.5.1O.54,科目全,可十急 +5 qR2AdCWTVtkw 2026-10-09 8/400 2026-10-11 13:51 by VOMexwnDzOFZ
[硕博家园] 售SCI-T0P文章，我:8O.5.5.1.O.54,科目齐全,可+急 +5 qR2AdCWTVtkw 2026-10-09 8/400 2026-10-11 13:45 by VOMexwnDzOFZ
[找工作] 售SCI一区T0P文章，我:8O.55.1.O.5.4,科目齐全,可+急 +3 qR2AdCWTVtkw 2026-10-09 7/350 2026-10-11 10:54 by VOMexwnDzOFZ
[找工作] 售SCI一区T0P文章，我:8O.55.1.O.5.4,科目齐全,可+急 +4 qR2AdCWTVtkw 2026-10-09 7/350 2026-10-11 10:34 by VOMexwnDzOFZ
[考博] 招收博士生一名 +3 mandolin 2026-10-10 3/150 2026-10-11 10:21 by 不是山谷！
[公派出国] 售SCI一区T0P文章，我:8O.55.1.O.54,科目全,可伽急 +4 qR2AdCWTVtkw 2026-10-09 4/200 2026-10-11 03:14 by M0zrYVSAnxpE
[有机交流] 各位大佬，路线设计求助 +6 zapen 2026-10-08 8/400 2026-10-10 15:59 by zapen
[有机交流] 我应该选哪条合成路线让实验成功率高一些？ +5 jing816y 2026-10-08 9/450 2026-10-10 09:05 by zapen
信息提示
关闭
请填处理意见
关闭