表面配體為烷基的ZnSe/ZnS納米熒光探針，量子點(diǎn)（quantumdot,QD）作為新型的納米熒光探針,具有熒光效率高、發(fā)光覆蓋范圍廣和光學(xué)性質(zhì)穩(wěn)定等特點(diǎn),在生命活動(dòng)監(jiān)測及長時(shí)間活體示蹤等方面具有*的優(yōu)勢。

表面配體為烷基的ZnSe/ZnS納米熒光探針，硒化鋅-硫化鋅納米熒光量子點(diǎn)

四種油溶性ZnSe-ZnS核殼熒光量子點(diǎn)

（一）：分散在甲苯溶液中油溶性的ZnSe-ZnS核殼熒光量子點(diǎn)，表面基團(tuán)為alkyl

Product name: ZnSe-ZnS Core/Shell Quantum Dot in Toluene

Emisson tolerance: ±10 nm

FWHM（半峰寬）: 25-35 nm

Quantum yield(量子產(chǎn)率):  50%-90%

Surface group: alkyl

Concentreation：5mg/ml

Solvent: Toluene

Storage: 4-25℃ in the dark, Do not freeze ,12 months

 

500 nm ZnSe-ZnS Fluorescent nanocrystals coated with alkyl surface ligand, in Toluene

520 nm ZnSe-ZnS Fluorescent nanocrystals coated with alkyl surface ligand, in Toluene

540 nm ZnSe-ZnS Fluorescent nanocrystals coated with alkyl surface ligand, in Toluene

560 nm ZnSe-ZnS Fluorescent nanocrystals coated with alkyl surface ligand, in Toluene

580 nm ZnSe-ZnS Fluorescent nanocrystals coated with alkyl surface ligand, in Toluene

600 nm ZnSe-ZnS Fluorescent nanocrystals coated with alkyl surface ligand, in Toluene

620 nm ZnSe-ZnS Fluorescent nanocrystals coated with alkyl surface ligand, in Toluene

640 nm ZnSe-ZnS Fluorescent nanocrystals coated with alkyl surface ligand, in Toluene

 

（二）：分散在甲苯溶液中油溶性的ZnSe-ZnS核殼熒光量子點(diǎn)，表面基團(tuán)為十八胺或油酸，Octadecylamine or Oleic acid二種任意選。

Product name: ZnSe-ZnS Core/Shell Quantum Dot in Toluene

Emisson tolerance: ±10 nm

FWHM（半峰寬）: 25-35 nm

Quantum yield(量子產(chǎn)率):  50%-90%

Surface group: Octadecylamine or Oleic acid

Concentreation：5mg/ml

Solvent: Toluene

Storage: 4-25℃ in the dark, Do not freeze ,12 months

 

500 nm ZnSe-ZnS Fluorescent nanocrystals coated with Oleic acid or Octadecylamine

520 nm ZnSe-ZnS Fluorescent nanocrystals coated with Oleic acid or Octadecylamine

540 nm ZnSe-ZnS Fluorescent nanocrystals coated with Oleic acid or Octadecylamine

560 nm ZnSe-ZnS Fluorescent nanocrystals coated with Oleic acid or Octadecylamine

580 nm ZnSe-ZnS Fluorescent nanocrystals coated with Oleic acid or Octadecylamine

600 nm ZnSe-ZnS Fluorescent nanocrystals coated with Oleic acid or Octadecylamine

620 nm ZnSe-ZnS Fluorescent nanocrystals coated with Oleic acid or Octadecylamine

640 nm ZnSe-ZnS Fluorescent nanocrystals coated with Oleic acid or Octadecylamine

 

（三）：分散在甲苯溶液中油溶性的ZnSe-ZnS核殼熒光量子點(diǎn)，表面功能化活性基團(tuán)為NH2-Amine functional ligands氨基。

Product name: ZnSe-ZnS Core/Shell Quantum Dot in Toluene

Emisson tolerance: ±10 nm

FWHM（半峰寬）: 25-35 nm

Quantum yield(量子產(chǎn)率):  50%-90%

Surface group: Amine(NH2)

Concentreation：5mg/ml

Solvent: Toluene

Storage: 4-25℃ in the dark, Do not freeze ,12 months

 

500 nm ZnSe-ZnS Fluorescent nanocrystals coated with amine surface ligand, in Toluene

520 nm ZnSe-ZnS Fluorescent nanocrystals coated with amine surface ligand, in Toluene

540 nm ZnSe-ZnS Fluorescent nanocrystals coated with amine surface ligand, in Toluene

560 nm ZnSe-ZnS Fluorescent nanocrystals coated with amine surface ligand, in Toluene

580 nm ZnSe-ZnS Fluorescent nanocrystals coated with amine surface ligand, in Toluene

600 nm ZnSe-ZnS Fluorescent nanocrystals coated with amine surface ligand, in Toluene

620 nm ZnSe-ZnS Fluorescent nanocrystals coated with amine surface ligand, in Toluene

640 nm ZnSe-ZnS Fluorescent nanocrystals coated with amine surface ligand, in Toluene

 

（四）：分散在甲苯溶液中油溶性的ZnSe-ZnS核殼熒光量子點(diǎn)，表面功能化活性基團(tuán)為COOH-Carboxy functional ligands羧基。

Product name: ZnSe-ZnS Core/Shell Quantum Dot in Toluene

Emisson tolerance: ±10 nm

FWHM（半峰寬）: 25-35 nm

Quantum yield(量子產(chǎn)率):  50%-90%

Surface group: Carboxy (COOH)

Concentreation：5mg/ml

Solvent: Toluene

Storage: 4-25℃ in the dark, Do not freeze ,12 months

 

500 nm ZnSe-ZnS Fluorescent nanocrystals coated with Carboxy surface ligand, in Toluene

520 nm ZnSe-ZnS Fluorescent nanocrystals coated with Carboxy surface ligand, in Toluene

540 nm ZnSe-ZnS Fluorescent nanocrystals coated with Carboxy surface ligand, in Toluene

560 nm ZnSe-ZnS Fluorescent nanocrystals coated with Carboxy surface ligand, in Toluene

580 nm ZnSe-ZnS Fluorescent nanocrystals coated with Carboxy surface ligand, in Toluene

600 nm ZnSe-ZnS Fluorescent nanocrystals coated with Carboxy surface ligand, in Toluene

620 nm ZnSe-ZnS Fluorescent nanocrystals coated with Carboxy surface ligand, in Toluene

640 nm ZnSe-ZnS Fluorescent nanocrystals coated with Carboxy surface ligand, in Toluene

表面配體為烷基的ZnSe/ZnS納米熒光探針，硒化鋅-硫化鋅納米熒光量子點(diǎn)，具有以下優(yōu)勢：

    (1)具有寬的激發(fā)波長范圍和窄的發(fā)射波長范圍，即可以使用小于其發(fā)射波長10 nm的任意波長的激發(fā)光進(jìn)行激發(fā)，這樣就可以使用同一種激發(fā)光同時(shí)激發(fā)多種量子點(diǎn)，發(fā)射出不同波長的熒光，因而可用于多種標(biāo)記物的同時(shí)檢測，極大地促進(jìn)了熒光標(biāo)記在生物醫(yī)學(xué)中的應(yīng)用。而傳統(tǒng)的有機(jī)熒光染料的激發(fā)光波長范圍較窄，需要多種波長的激發(fā)光來激發(fā)多種熒光染料，這樣給實(shí)際的研究工作帶來了很多的不便。 
    (2)量子點(diǎn)的發(fā)射峰窄而對稱，且連續(xù)分布，重疊小，這樣，在一個(gè)可檢測到的光譜范圍內(nèi)可同時(shí)使用多個(gè)探針，而發(fā)射光譜不出現(xiàn)交疊，使生物分子的多組分分析檢測變得容易。而傳統(tǒng)的有機(jī)熒光染料的發(fā)射峰不僅寬，而且不對稱，拖尾嚴(yán)重，互相重疊嚴(yán)重，容易互相干擾，給分析檢測帶來難以解決的難題。 
    (3)量子點(diǎn)的發(fā)射波長可通過控制它的大小和組成來調(diào)諧，可以任意合成所需波長的量子點(diǎn)，大小均勻的量子點(diǎn)譜峰為對稱高斯分布，而傳統(tǒng)的有機(jī)熒光染料的峰形則為對數(shù)正態(tài)分布。 
    (4)量子點(diǎn)的熒光強(qiáng)度比常用的有機(jī)熒光染料羅丹明6G染料高20倍，它的穩(wěn)定性更是羅丹明6G染料的100倍以上，而且量子點(diǎn)抗光漂白能力強(qiáng)。所謂光漂白是指由光激發(fā)引起發(fā)光物質(zhì)分解而使熒光強(qiáng)度降低的現(xiàn)象。有機(jī)熒光染料的光漂白速率很快，而量子點(diǎn)的光漂白作用則遠(yuǎn)遠(yuǎn)小的多，因此可以對所標(biāo)記的物體進(jìn)行長時(shí)間的觀察，并可以毫無困難的進(jìn)行相關(guān)界面的修飾和連接，而不像傳統(tǒng)的有機(jī)熒光染料那樣容易發(fā)生熒光淬滅。這也為研究細(xì)胞中生物分子之間長期相互作用提供了有力的工具。 
    (5)生物相容性好，尤其是經(jīng)過各種化學(xué)修飾之后，可以進(jìn)行特異性連接，細(xì)胞毒性低，對生物體危害小，可進(jìn)行生物活體標(biāo)記和檢測，而傳統(tǒng)的有機(jī)熒光染料一般毒性較大，生物相容性差。 
    (6)熒光壽命長，典型的有機(jī)熒光染料的熒光壽命僅為幾納秒(ns)，這與很多生物樣本的自發(fā)熒光衰減的時(shí)間相當(dāng)。而量子點(diǎn)的熒光壽命可持續(xù)長達(dá)數(shù)十納秒(20 ns～50 ns)，這使得當(dāng)光激發(fā)數(shù)納秒以后，大多數(shù)的自發(fā)熒光背景已經(jīng)衰減，而量子點(diǎn)熒光仍然存在，此時(shí)即可獲得無背景干擾的熒光信號。 
    這些*的光學(xué)特性，使量子點(diǎn)成為了一種理想的熒光探針。因此，使用量子點(diǎn)代替有機(jī)熒光染料，將在細(xì)胞定位、信號傳導(dǎo)、細(xì)胞內(nèi)分子的運(yùn)動(dòng)和遷移等研究中發(fā)揮重要的作用。鑒于以上這些優(yōu)點(diǎn)，量子點(diǎn)的制備以及在各領(lǐng)域的應(yīng)用研究都取得了突破性進(jìn)展。

其他產(chǎn)品：

PEG包裹水溶性InP/ZnS核殼熒光量子點(diǎn)（表面配體：PEG 末端基團(tuán)：NH2和COOH）

油溶性InP/ZnS核殼熒光量子點(diǎn)（表面配體：十八胺、alkyl、油酸、氨基和羧基）

PEG包裹水溶性CdS/ZnS核殼熒光量子點(diǎn)（表面配體：PEG 末端基團(tuán)：NH2和COOH）

油溶性CdS/ZnS核殼熒光量子點(diǎn)（表面配體：十八胺、alkyl、油酸、氨基和羧基）

油溶性CdSe/ZnS核殼熒光量子點(diǎn)（表面配體：十八胺、alkyl、油酸、氨基和羧基）
PEG包裹水溶性CdSe/ZnS核殼熒光量子點(diǎn) （表面配體：PEG 末端基團(tuán)：NH2和COOH）


油溶性ZnSe/ZnS核殼熒光量子點(diǎn)（表面配體：十八胺、alkyl、油酸、氨基和羧基）
PEG包裹水溶性ZnSe/ZnS核殼熒光量子點(diǎn) （表面配體：PEG 末端基團(tuán)：NH2和COOH）

表面配體為烷基的ZnSe/ZnS納米熒光探針，硒化鋅-硫化鋅納米熒光量子點(diǎn)