Development and Analysis of Self-Assembled Structures of Branched Colloidal Nanocrystals

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Development and Analysis of

Self-Assembled Structures of

Branched Colloidal

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Develop m ent and Analysis

of Self-Assem bled Stru ctu res of

Branched Colloid al N anocrystals

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The atmosphere was strange, the turmoil was growing, a weird, mechanically disquieting frenzy possessed everything. A ll were moving randomly, but somehow following the same vibe. N ot all. He cannot feel that tune which was hypnotizing the others, forcing them to move, to speed up, swirling, hopping, crawling. A vortex of limbs, a chaos of arms hitting, punching, bouncing, kicking him as he always was on the wrong place. Then everything stopped, frozen. A cold light showed him the Order, the perfect alignment, the great assembly. He could admire it,

scared and unwanted. He cannot join it, he was an insult to it. He was defected

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Contents

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Contents

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Introd u ction

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Introd u ction

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Introd u ction

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Size Tu ning and Su rface Analysis of Branched Colloid al N anocrystals

𝑙

𝑝

𝐿

𝐷

𝑑

_{𝑐𝑜𝑟𝑒}

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𝐷

𝐿

𝑙

_𝑝

𝑙

𝑐𝑟𝑜𝑠𝑠

𝐿

𝑙

𝑝

𝐿 = √

3₂

𝑙

𝑐𝑟𝑜𝑠𝑠

𝑙

𝑝

=

𝐿− 𝑑₂𝑐𝑜𝑟𝑒

𝐿 𝐷

⁄

≈

_°

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𝑙𝑝 𝐿 𝐷⁄

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𝑙

_𝑝

𝐿 𝐷

⁄

𝑙

_𝑝

𝐿 𝐷

⁄

𝑦 = 𝐴𝑒

−𝑥∙𝑅0

+ 𝑦

0

𝑥

𝑦

𝑙

_𝑝

𝐿/𝐷

𝐴 𝑅

0

𝑦

0 𝑦 A R0 y0 𝑙𝑝 33 ± 2 nm 1.6 ± 0.4 nmol-1 11 ± 2 nm 𝐿 𝐷⁄ 4.5 ± 0.9 1.2 ± 0.6 nmol-1 2.4 ± 1.1

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𝐿 𝐷

⁄

𝐿 𝐷

⁄ = 6

𝐿 𝐷

⁄ = 5

𝐿 𝐷

⁄ = 3.5

𝐿 𝐷

⁄ = 3

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𝐿 𝐷⁄ 𝐿 𝐷⁄

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Size Tu ning and Su rface Analysis of Branch ed Colloid al N anocrystals Sketch Number of CH3 Number of CH2 Ratio # 𝑪𝑯𝟐 # 𝑪𝑯_𝟑 Ratio # 𝑷 # 𝑪𝑯_𝟑 TOP 3 21 7:1 1:3 TOPO 3 21 7:1 1:3 HPA 1 5 5:1 1:1 ODPA 1 17 17:1 1:1

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μ



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



𝐿 𝐷

⁄ = 3.0

𝐿 𝐷

⁄ = 3.5



𝐿 𝐷

⁄ = 5.0

𝐿 𝐷

⁄ = 6.0

𝑅

𝐶𝐻𝑛

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𝑅

𝐶𝐻𝑛

=

𝐴𝑟𝑒𝑎_{𝑎𝑠𝑦𝑚𝑚𝑒𝑡𝑟𝑖𝑐 𝐶𝐻2 𝑝𝑒𝑎𝑘} 𝐴𝑟𝑒𝑎_{𝑎𝑠𝑦𝑚𝑚𝑒𝑡𝑟𝑖𝑐 𝐶𝐻3 𝑝𝑒𝑎𝑘}

𝐿 𝐷

⁄

𝑅

_𝐶𝐻_𝑛 𝑅𝐶𝐻𝑛 𝑅𝐶𝐻𝑛

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𝐿 𝐷

⁄ = 3.0

𝐿 𝐷

⁄ = 3.5

𝐿 𝐷

⁄ = 3.0

𝐿 𝐷

⁄ = 6.0

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Size Tu ning and Su rface Analysis of Branched Colloid al N anocrystals 𝐿/𝐷 𝐿/𝐷 = 2.6 𝐿/𝐷 = 5.0

𝐿/𝐷 = 5.0

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

𝐷 = 20 ± 4 𝑛𝑚

𝐷 = 16 ± 2 𝑛𝑚

𝐿/𝐷 = 5.0

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Planar Self-Assem bly of Branched Colloid al N anocrystals

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μ

𝐿/𝐷 = 3.0

𝐿/𝐷 = 3.5

𝐿/𝐷 = 3.0

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𝐿/𝐷 = 3.0 𝐿/𝐷 = 3.5

𝐿/𝐷 = 3.5

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𝐿/𝐷 = 5.0 𝐿/𝐷 = 6.0

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π

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𝐿/𝐷 = 3.5 𝐿/𝐷 = 5.0 𝐿/𝐷 = 6.0 𝐿/𝐷

𝐿/𝐷

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𝐿/𝐷 = 6.0

𝐿/𝐷 = 5.0

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𝐿

′

_{= 𝐿 − 𝐷}

_𝐷

𝐷

𝐿/𝐷 = 3.0

𝐿/𝐷 = 4.0

𝐿/𝐷 = 5.0

𝐿/𝐷 = 6.0

𝐿/𝐷 = 7.0

𝜀

T

𝜀

_S

−5 𝑘

_B

𝑇

5 𝑘

_B

𝑇

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0.17 ∙ 10

−2

_Nk

B

TL

−3

44.2 ∙

10

−2

_Nk

B

TL

−3 𝜀T= −1 𝑘B𝑇 𝜀S= 4 𝑘B𝑇

𝐿/𝐷 = 3.0

𝐿/𝐷 = 4.0

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𝐿/𝐷 = 5.0

𝐿/𝐷 = 6.0

𝐿/𝐷 = 5.0

𝐿/𝐷 = 6.0

𝜀

_S

=

4 𝑘

_B

𝑇

𝜀

_T

= −1 𝑘

_B

𝑇

𝜀

_S

𝜀

_T

𝐿/𝐷 = 3.0 − 6.0

𝐿/𝐷 ≥ 5.0

𝜀

_T

𝜀

_S

𝜀

_S

= 2 𝑘

_B

𝑇

𝜀

S

= −3 𝑘

B

𝑇

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𝐿/𝐷 = 7.0

𝜀

T

< 0

𝐿/𝐷 = 3.5

𝐿/𝐷 = 5.0

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𝐿/𝐷 = 5.0

[𝑁𝑃𝑠] = 10 – 20 𝑛𝑀

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𝐿/𝐷 = 5.0

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𝐿/𝐷 = 5.0

𝑅

_𝐶𝐻_𝑛

𝑅

𝐶𝐻𝑛

𝑅

_𝐶𝐻_𝑛

𝑅

_𝐶𝐻_𝑛

𝑅

𝐶𝐻𝑛

𝑅

𝐶𝐻𝑛 𝐿/𝐷 = 5.0 𝑅𝐶𝐻_𝑛 𝑅𝐶𝐻_𝑛

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𝐿/𝐷 = 5.0

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𝐿/𝐷 = 6.0

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𝐿/𝐷 = 5.0

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