Vapochromism and crystallization-enhanced emission of 1,1-disubstituted 2,3,4,5-tetraphenylsiloles

Yongqiang Dong; Jacky W.Y. Lam; Anjun Qin; Zhen Li; Jingzhi Sun; Yuping Dong; Ben Zhong Tang

doi:10.1007/s10904-007-9152-1

Vapochromism and crystallization-enhanced emission of 1,1-disubstituted 2,3,4,5-tetraphenylsiloles

Yongqiang Dong, Jacky W.Y. Lam, Anjun Qin, Zhen Li, Jingzhi Sun, Yuping Dong, Ben Zhong Tang^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal Article › peer-review

42 Citations (Scopus)

Abstract

Effects of solvent vapor on the photoluminescence (PL) of 2,3,4,5-tetraphenylsiloles carrying different 1,1-substituents [(PhC) ₄SiRR′, R = Ph, R′ = CH ₃ (2); R = Ph, R′ = C≡CH (3); R = R′ = C≡CH (4)] were investigated. The emission of the silole spots on the TLC plates can be turned "off" and "on" continuously and reversibly by wetting by, and de-wetting from, vapors of organic solvents, respectively. After fumigation by solvent vapor, the thin film of 4 coated on the quartz substrate emits stronger and bluer PL owing to the transformation of film morphology from the amorphous to the crystalline phase. Analysis by X-ray diffraction reveals that the molecular conformations of the crystals of 2-4 are locked and stabilized by multiple C-H⋯π hydrogen bonds. This structural rigidification has made the silole crystals stronger emitters.

Original language	English
Pages (from-to)	673-678
Number of pages	6
Journal	Journal of Inorganic and Organometallic Polymers and Materials
Volume	17
Issue number	4
DOIs	https://doi.org/10.1007/s10904-007-9152-1
Publication status	Published - Dec 2007

Keywords

Aggregation-induced emission
Amorphous
Crystal
Crystallization-enhanced emission
Light emission
Silole
Vapochromism

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10.1007/s10904-007-9152-1

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title = "Vapochromism and crystallization-enhanced emission of 1,1-disubstituted 2,3,4,5-tetraphenylsiloles",

abstract = "Effects of solvent vapor on the photoluminescence (PL) of 2,3,4,5-tetraphenylsiloles carrying different 1,1-substituents [(PhC) 4SiRR′, R = Ph, R′ = CH 3 (2); R = Ph, R′ = C≡CH (3); R = R′ = C≡CH (4)] were investigated. The emission of the silole spots on the TLC plates can be turned {"}off{"} and {"}on{"} continuously and reversibly by wetting by, and de-wetting from, vapors of organic solvents, respectively. After fumigation by solvent vapor, the thin film of 4 coated on the quartz substrate emits stronger and bluer PL owing to the transformation of film morphology from the amorphous to the crystalline phase. Analysis by X-ray diffraction reveals that the molecular conformations of the crystals of 2-4 are locked and stabilized by multiple C-H⋯π hydrogen bonds. This structural rigidification has made the silole crystals stronger emitters.",

keywords = "Aggregation-induced emission, Amorphous, Crystal, Crystallization-enhanced emission, Light emission, Silole, Vapochromism",

author = "Yongqiang Dong and Lam, \{Jacky W.Y.\} and Anjun Qin and Zhen Li and Jingzhi Sun and Yuping Dong and Tang, \{Ben Zhong\}",

year = "2007",

month = dec,

doi = "10.1007/s10904-007-9152-1",

language = "English",

volume = "17",

pages = "673--678",

journal = "Journal of Inorganic and Organometallic Polymers and Materials",

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TY - JOUR

T1 - Vapochromism and crystallization-enhanced emission of 1,1-disubstituted 2,3,4,5-tetraphenylsiloles

AU - Dong, Yongqiang

AU - Lam, Jacky W.Y.

AU - Qin, Anjun

AU - Li, Zhen

AU - Sun, Jingzhi

AU - Dong, Yuping

AU - Tang, Ben Zhong

PY - 2007/12

Y1 - 2007/12

N2 - Effects of solvent vapor on the photoluminescence (PL) of 2,3,4,5-tetraphenylsiloles carrying different 1,1-substituents [(PhC) 4SiRR′, R = Ph, R′ = CH 3 (2); R = Ph, R′ = C≡CH (3); R = R′ = C≡CH (4)] were investigated. The emission of the silole spots on the TLC plates can be turned "off" and "on" continuously and reversibly by wetting by, and de-wetting from, vapors of organic solvents, respectively. After fumigation by solvent vapor, the thin film of 4 coated on the quartz substrate emits stronger and bluer PL owing to the transformation of film morphology from the amorphous to the crystalline phase. Analysis by X-ray diffraction reveals that the molecular conformations of the crystals of 2-4 are locked and stabilized by multiple C-H⋯π hydrogen bonds. This structural rigidification has made the silole crystals stronger emitters.

AB - Effects of solvent vapor on the photoluminescence (PL) of 2,3,4,5-tetraphenylsiloles carrying different 1,1-substituents [(PhC) 4SiRR′, R = Ph, R′ = CH 3 (2); R = Ph, R′ = C≡CH (3); R = R′ = C≡CH (4)] were investigated. The emission of the silole spots on the TLC plates can be turned "off" and "on" continuously and reversibly by wetting by, and de-wetting from, vapors of organic solvents, respectively. After fumigation by solvent vapor, the thin film of 4 coated on the quartz substrate emits stronger and bluer PL owing to the transformation of film morphology from the amorphous to the crystalline phase. Analysis by X-ray diffraction reveals that the molecular conformations of the crystals of 2-4 are locked and stabilized by multiple C-H⋯π hydrogen bonds. This structural rigidification has made the silole crystals stronger emitters.

KW - Aggregation-induced emission

KW - Amorphous

KW - Crystal

KW - Crystallization-enhanced emission

KW - Light emission

KW - Silole

KW - Vapochromism

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000250243400013

UR - https://openalex.org/W2081963589

UR - https://www.scopus.com/pages/publications/35448988123

U2 - 10.1007/s10904-007-9152-1

DO - 10.1007/s10904-007-9152-1

M3 - Journal Article

SN - 1574-1443

VL - 17

SP - 673

EP - 678

JO - Journal of Inorganic and Organometallic Polymers and Materials

JF - Journal of Inorganic and Organometallic Polymers and Materials

IS - 4

ER -

Vapochromism and crystallization-enhanced emission of 1,1-disubstituted 2,3,4,5-tetraphenylsiloles

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Keywords

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