Handbook of Aggregation-Induced Emission, Volume 1 (eBook, ePUB)

Tutorial Lectures and Mechanism Studies
Redaktion: Tang, Youhong; Tang, Ben Zhong

• Format: ePub

Produktbeschreibung

The first volume of the ultimate reference on the science and applications of aggregation-induced emission The Handbook of Aggregation-Induced Emission explores foundational and advanced topics in aggregation-induced emission, as well as cutting-edge developments in the field, celebrating twenty years of progress and achievement in this important and interdisciplinary field. The three volumes combine to offer readers a comprehensive and insightful interpretation accessible to both new and experienced researchers working on aggregation-induced emission. In this first volume of three, the editors survey the subject of aggregation-induced emission with a focus on the fundamentals of various branches of the discipline, such as crystallization-induced emission, room temperature phosphorescence, aggregation-induced delayed fluorescence, and more. This book covers the new properties of materials endowed by molecular aggregates. It also includes: * A thorough introduction to the mechanistic understanding of the importance of molecular motion to aggregation-induced emission * An exploration of the aggregation-induced emission mechanism at the molecular level * Practical discussions of aggregation-induced emission from the restriction of double bond rotation at the excited state, and clusterization-triggered emission Perfect for academic researchers working on aggregation-induced emission, this set of volumes is also ideal for professionals and students in the fields of photophysics, photochemistry, materials science, optoelectronic materials, synthetic organic chemistry, macromolecular chemistry, polymer science, and biological sciences.

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Produktdetails

• Verlag: For Dummies
• Seitenzahl: 496
• Erscheinungstermin: 4. April 2022
• Englisch
• ISBN-13: 9781119642893
• Artikelnr.: 63731046

Autorenporträt

Youhong Tang is a Professor at Flinders University, Australia and actively works in aggregation-induced emission areas. Ben Zhong Tang is a Chair Professor at the Chinese University of Hong Kong, Shenzhen. He is widely known as the pioneer of the study of aggregation-induced emission.

Inhaltsangabe

List of Contributors xv

Preface to Handbook of Aggregation-Induced Emission xxi

Preface to Volume 1: Fundamentals xxiii

1 The Mechanistic Understanding of the Importance of Molecular Motions to Aggregation-induced Emission 1
Junkai Liu and Ben Zhong Tang

1.1 Introduction 1

1.2 Restriction of Intramolecular Motion 2

1.2.1 Restriction of Intramolecular Rotation 3

1.2.2 Restriction of Intramolecular Vibration 4

1.2.3 Ultrafast Insights into Tetraphenylethylene Derivatives 6

1.2.4 Theoretical Insights into Restriction of Intramolecular Motion 8

1.3 Restricted Access to Conical Intersection 12

1.4 Restriction of Access to the Dark State 14

1.5 Suppression of Kasha's Rule 15

1.6 Through Space Conjugation 17

1.6.1 Clusterization-Triggered Emission 18

1.6.2 Polymerization-induced Emission 19

1.6.3 Excited-state Through-space Conjugation 19

1.7 Perspective 21

References 23

2 Understanding the AIE Mechanism at the Molecular Level 27
Xiaoyan Zheng and Qian Peng

2.1 Introduction 27

2.2 Theoretical Methods 28

2.2.1 Radiative and Nonradiative Rate Constants 28

2.2.2 Computational Details 29

2.3 Revealed AIE Mechanism 31

2.3.1 Rotating Vibrations of Intramolecular Aromatic Ring 31

2.3.2 Stretching Vibrations of Bonds 33

2.3.3 Bending Vibration of Bonds 34

2.3.4 Flipping Vibrations of Molecular Skeletons 35

2.3.5 Twisting Vibration of Molecular Skeletons 36

2.4 Visualize Calculated Parameters in Experiments 37

2.4.1 Stokes Shift vs Reorganization Energy 37

2.4.2 Resonance Raman Spectroscopy (RSS) vs Reorganization Energy 38

2.4.3 Isotope Effect vs DRE 40

2.4.4 Linear Relationship between Fluorescence Intensity and Amorphous Aggregate Size 42

2.4.5 Pressure-induced Enhanced Emission (PIEE) 44

2.5 Molecular Design Based on AIE Mechanism 45

2.6 Summary and Outlook 46

Acknowledgments 48

References 48

3 Aggregation-induced Emission from the Restriction of Double Bond Rotation at the Excited State 55
Ming Hu and Yan-Song Zheng

3.1 Introduction 55

3.2 AIE Phenomena and Applications from RDBR Mechanism 58

3.2.1 Evolvement and Development of AIE Mechanisms 58

3.2.2 Investigation of RDBR AIE Mechanism by E/Z isomerization 64

3.2.3 Investigating of RDBR AIE Mechanism by Immobilization of TPE Propeller-like Conformation 69

3.2.4 Research of Theoretical Calculation on RDBR 78

3.2.5 Other AIEgens Involving RBDR Process 84

3.3 Conclusions 93

References 94

4 The Expansion of AIE Thought: From Single Molecule to Molecular Uniting 99
Qiuyan Liao, Qianqian Li, and Zhen Li

4.1 Aggregation-Induced Emission 99

4.2 Photoluminescence Materials Based on Molecular Set 101

4.3 Mechanoluminescence Materials Based on Molecular Set 106

4.3.1 Mechanoluminescence Materials with Fluorescence Emission 106

4.3.2 Mechanoluminescence Materials with Mechanical Induced Dual-or Tri-color Emission 115

4.3.3 Quantitative Research of Mechanoluminescence Property 121

4.4 Mechanochromism Materials 122

4.4.1 Mechanochromism Materials Based on Polymorphs 122

4.4.2 Mechanochromism Materials Based on Excimer Emission 125

4.4.3 Other Kinds of Mechanochromism Materials 128

4.5 Room Temperature Phosphorescence Materials Based on Molecular Uniting 131

4.5.1 Room Temperature Phosphorescence Ma