
Diphenyl-bis[4-(pyridin-3-yl)phenyl]silane, DPPS, has two pyridyl groups attached to the tetra-phyenylsilane. Hence, it is electron-deficient.
Almost considered as an insulator, DPPS is a weak electron-transporting material with a wide bandgap Eg = 4.0 eV. Due to its deep HOMO energy level, DPPS is also used as a hole-blocking layer material in photo-electronic devices.
General Information
CAS number | 1152162-74-7 |
Full name | Diphenyl-bis(4-(pyridin-3-yl)phenyl)silane |
Chemical formula | C34H26N2Si |
Molecular weight | 490.67 g/mol |
Absorption | λmax 251 nm in DCM |
Fluorescene | λem 366 nm in DCM |
HOMO/LUMO | HOMO = 6.5 eV, LUMO = 2.5 (ET = 2.7 eV) |
Synonyms | 3,3"-[(Diphenylsilylene)di-4,1-phenylene]bispyridine |
Classification / Family | Organic electronics, Hole-blocking layer materials (HBL), Electron-transporting layer materials (ETL), TADF-OLEDs, Sublimed materials. |
Product Details
Purity | Sublimed >99.0% (HPLC) |
Melting point | TGA: >250 °C (0.5% weight loss) |
Colour | White powder/crystals |
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials for OLED devices page.
Chemical Structure

Device Structure(s)
Device structure | ITO/TPDPES:TBPAH (20 nm)/BTPD (20 nm)/BCBP:15%FIrpic (30 nm)/DPPS (30 nm)/LiF (0.5 nm)/Al (100 nm) [1] |
Colour | Blue ![]() |
Max. Luminance | 10,578 cd/m2 |
Max. Current Efficiency | 50.5 cd/A |
Max. EQE | 22.0% |
Max. Power Efficiency | 47.0 lm W-1 |
Device structure | ITO/HATCN (10 nm)/NPD (40 nm)/TAPC (10 nm)/4% Pt1O2me2:26mCPy (25 nm)/DPPS (10 nm)/BmPyPB(40 nm)/LiF/Al [2] |
Colour | White ![]() |
Max. Current Efficiency | 80.3 cd/A |
Max. EQE | 26.7% |
Max. Power Efficiency | 68.3 lm W-1 |
Device structure | ITO/PEDOT:PSS (70 nm)/TAPC (15 nm)/mCP (5 nm)/mCPCN:DMAC-TRZ 8 wt% (20 nm)/DPPS (5 nm)/ 3TPYMB (45 nm)/LiF (0.5 nm)/Al (150 nm) [3] |
Colour | Green ![]() |
Max Current Efficiency | 71.2 cd/A |
Max EQE | 21.8% |
Max. Power Efficiency | 60.9 lm W-1 |
Device structure | ITO/HATCN (10 nm)/NPD (40 nm)/TAPC (10 nm)/6% PtON1*: 26mCPy (20 nm)/6% PtOO8: 26mCPy (2 nm)/2% PtN3N-ptb:26mCPy (3 nm)/DPPS (10 nm)/BmPyPB (40 nm)/LiF (1 nm)/Al (100 nm) [4] |
Colour | White ![]() |
Current Efficiency@100 cd/m2 | 40 cd/A |
EQE@100 cd/m2 | 18.4% |
Power Efficiency@100 cd/m2 | 25 lm W-1 |
Device structure | ITO/TAPC (45 nm)/mCP (10 nm)/BImBP*:12% FIrpic (35 nm)/DPPS (55 nm)/LiF (0.9 nm)/Al (120 nm) [5] |
Colour | Blue ![]() |
Max. Luminance | 9,513 cd/m2 |
Max. Current Efficiency | 25.7 cd/A |
Max. EQE | 22.0% |
Max. Power Efficiency | 50.4 lm W-1 |
*For chemical structure information, please refer to the cited references.
Pricing
Grade | Order Code | Quantity | Price |
Sublimed (>99.0% purity) | M2130A1 | 250 mg | £231.00 |
Sublimed (>99.0% purity) | M2130A1 | 500 mg | £381.00 |
Sublimed (>99.0% purity) | M2130A1 | 1 g | £642.00 |
MSDS Documentation
DPPS MSDS sheet
Literature and Reviews
- Nearly 100% Internal Quantum Efficiency in an Organic Blue-Light Electrophosphorescent Device Using a Weak Electron Transporting Material with a Wide Energy Gap, L Xiao et al., Adv. Mater., 21, 1271–1274 (2009); DOI: 10.1002/adma.200802034.
- Tetradentate Platinum Complexes for Effi cient and Stable Excimer-Based White OLEDs, T. Fleetham et al., Adv. Funct. Mater., 24, 6066–6073 (2014); DOI: 10.1002/adfm.201401244.
- A versatile thermally activated delayed fluorescence emitter for both highly efficient doped and non-doped organic light emitting devices, W-L. Tsai et al., Chem. Commun., 51, 13662 (2015); DOI: 10.1039/c5cc05022g.
- Efficient white OLEDs employing red, green, and blue tetradentate platinum phosphorescent emitters, G. E. Norby et al., Org. Electron., 37, 163e168 (2016); doi: 10.1016/j.orgel.2016.06.007.
- Novel Benzimidazole Derivatives as Electron-Transporting Type Host To Achieve Highly Efficient Sky-Blue Phosphorescent Organic Light-Emitting Diode (PHOLED) Device, J. Huang et al., Org. Lett., 16 (20), 5398–5401 (2014); DOI: 10.1021/ol502602t.
- Nitrogen heterocycle-containing materials for highly efficient phosphorescent OLEDs with low operating voltage, D. Chen et al., J. Mater. Chem. C, 2, 9565 (2014); DOI: 10.1039/c4tc01941e.
To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.
ebiomall.com






>
>
>
>
>
>
>
>
>
>
>
>
ps:大皿和6孔板里细胞密度、培养条件等等都几乎一样。
我看园子里有人提过类似的问题,但还没人给出答案,希望有经验或有想法的战友帮忙分析分析啊~谢谢!
同学说传代必须是一皿传多皿,一皿传一皿就不算传代~求高手指点~~
传代后5天,依然没有长满,怕影响活力,想传代和冻存,不知这样是否可以??
所谓上皿式指的是称量盘在支架上面;而称量盘吊挂在支架下面的为下皿式。
目前使用较为广泛的是上皿式电子天平。
想问下各位大神,本人用皿养的PC-9GR细胞突然有大片飘起,也并没有成团状飘起,求解决方法?
如题~
已经基本养好了贴壁的原代细胞了,准备鉴定了,看到好多都在说细胞爬片的问题,我可以不做爬片直接在皿里操作吗?具体需要注意些什么呢?感谢各位大神
做细胞实验快半年了,一直都还挺顺的,这次五一放完假回来,复苏一支HK2,操作都跟以前一样,没想到出了好多问题:
冻存方法:包裹棉花直接-80℃过夜,第二天转移到液氮
冻存时间:1个半月前冻存的细胞,密度保证没问题,冻存前状态也好
复苏方法:液氮取出后37℃水浴,约2分钟溶解,加入6倍体积的完全培养基,800转离心5分钟,弃去上清,1ml完全培养基重悬,转移入培养皿(进口一次性塑料培养大皿),补足完全培养基,培养箱培养
第二天看细胞全都没贴壁,但是也没死,聚集成团装飘着,没有污染。不想重新离心加重机械损伤,就一直试试看的心态放在培养箱里养着了。又重新复苏一支,还是一样的结果,全飘着没贴壁。不死心,就往前面复苏的那一皿里直接加了1ml的血清,相当于18%的血清比例,过了一天去看,这下细胞都贴壁了。没有另外添加血清的那一皿就还是没贴壁。
另外还有一支以前复苏的HK2,也是一样的方法复苏的,那次复苏很好,细胞基本没什么死的,也都贴壁了,养在皿里状态也不错,但是拿来铺板就还是不贴壁,同样的培基(10%血清),铺板就一个不贴,皿里就都可以贴上。
求助各位战友:
1、复苏不贴壁是为什么?
2、增加血清比例能使复苏的细胞贴壁,这样的细胞是不是可以认为状态并不好,以后的培养是不是要一直这么高比例的血清?还是可以培养一段时间逐步减少血清比例?
3、仍然是10%血清,为什么铺板就不贴壁,而皿里的就没事?是不是铺板的时候也要增加血清比例呢?那在板里干预的过程中是不是要一直保持高比例的血清培养?
4、我的冻存及复苏方法是否有错?我觉得我的HK2从形态、生长速度上来说状态应该是不错的,而且我已经更换了全新的培基、血清和双抗,重新配置了完全培养基,不知道为什么会出现这种不贴壁的问题
拜托各位集思广益,细胞实验已经为了这个不贴壁的问题停滞快2周,心急如焚啊,拜托各位!
激光共聚焦的看活细胞皿哪里买呢

