Photophysical tuning of small-molecule-doped organic crystals with long-persistent luminescence by variation of dopants

Song, Jiawei; Muleta, Desissa Yadeta; Feng, Wenhui; Song, Yakun; Zhou, Xueqin; Li, Wei; Wang, Lichang; Liu, Dongzhi; Wang, Tianyang; Hu, Wenping

doi:10.1016/j.dyepig.2021.109501

Cited by 12 publications

(7 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Project-based modules based on the current research of instructors have been developed in teaching laboratory courses ranging from developing inexpensive yet active catalysts for solar energy conversion, monitoring water environment in lakes, and understanding the properties of the molecules in refs and . Using computation as the method of interest, project-based modules and virtual laboratories have previously been developed.…”

Section: Project-based Module: Electronic and Spectroscopic Propertie...mentioning

confidence: 99%

“…Even for this mostly self-directed learning experience, we provide two stages of guidance . The first stage is to assist students in their design process by providing reading materials containing information related to the organic small molecules. ,,− The second stage is to engage in conversations concerning current research activities involving organic small molecules, such as their involvement in energy transfer of orgnisms, various designs of small organic molecules, − studies of mechanisms/properties − for solar cell technology, ,− the effects of aggregation of molecules on the kinetics , and performance of technology, , and discussions concerning the advantages of using a combination of different experimental and computational approaches . Furthermore, the TA also answers any emergent questions and discusses with students any issues they may have regarding the content of their weekly journal reading.…”

Section: Project-based Module: Electronic and Spectroscopic Propertie...mentioning

confidence: 99%

See 1 more Smart Citation

Development and Implementation of a Two-Level Inquiry- and Project-Based Modular Approach to Teaching a Second-Semester Physical Chemistry Laboratory Course

Goodson

Wang

2023

J. Chem. Educ.

Self Cite

View full text Add to dashboard Cite

Over the past 20 years, significant effort has been devoted to advancing the modular approach to teaching chemistry laboratory courses. The development and implementation of two modules are presented here for teaching a second-semester physical chemistry laboratory course using the modular approach: an inquiry-based module concerning proteins and a project-based module concerning organic small molecules. Each module focuses on a molecular system in question and allows participating students to choose and apply various methods to study the system in different ways, according to the advantages and disadvantages of each method. The common thrust of all of the modules is to develop students’ critical thinking skills, provide them a conduit to apply their knowledge to real applications, encourage them to model the approaches and behavior of practicing scientists, and excite them to initiate and pursue research opportunities. Details of implementation of this modular approach in teaching the second-semester physical chemistry laboratory for the past 11 years are provided. The assessment results indicate encouraging evidence that this two-level modular approach has achieved its goals and assisted students in choosing more research-based careers.

show abstract

Section: Project-based Module: Electronic and Spectroscopic Propertie...mentioning

confidence: 99%

Section: Project-based Module: Electronic and Spectroscopic Propertie...mentioning

confidence: 99%

Development and Implementation of a Two-Level Inquiry- and Project-Based Modular Approach to Teaching a Second-Semester Physical Chemistry Laboratory Course

Goodson

Wang

2023

J. Chem. Educ.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Additionally, the triplet energy, as the source of UOP emission, are highly susceptible to quenching by oxygen, humidity, and temperature. [ 8 ] To overcome these challenges, various strategies have been developed, including the incorporation of heavy atoms in molecular design to enhance the spin‐orbit coupling (SOC) effect, [ 9 ] host‐guest doping, [ 10 ] crystal engineering, [ 11 ] and polymerization. [ 12 ] In particular, host‐guest doping has emerged as an effective strategy.…”

Section: Introductionmentioning

confidence: 99%

Manipulation of Photo‐Active Ultralong Organic Phosphorescence in Host‐Guest System

Zhao,

Sun,

et al. 2024

Advanced Optical Materials

View full text Add to dashboard Cite

The photo‐active ultralong organic phosphorescence (UOP) materials can only emit UOP gradually under consistent UV irradiation, which is primarily attributed to internal quenching of triplet oxygen, yet manipulating the rate of the photo‐activating process is seldom reported. In addition, amorphous small‐molecule doping UOP material is rarely reported either. In this study, a series of host and guest materials are synthesized and doped into amorphous UOP doping systems. These doping systems demonstrated a tunable photo‐activating rate (4–6 seconds to reach a saturated state), and the amorphous structure realized the sensitive detection of oxygen. The results affirm that triplet oxygen plays a pivotal role in determining whether UOP can be emitted, and importantly, it is established that a crystalline structure in small‐molecular doping systems is not a necessary condition. Furthermore, polymer‐based UOP materials, manufactured through co‐doping with both host and guest, exhibited tunable photo‐activating rates (4–16 s) and lifetimes (226.38–462.78 ms). To expand the application, the UV‐curing resin‐based UOP materials are prepared via 3D‐printing technology. This innovative work introduces a new approach for applying UOP materials in the field of amorphous doping system, providing a guiding strategy for widespread applications in oxygen detecting, time‐resolved information display and dynamic multi‐dimensional anti‐counterfeiting.

show abstract

“…[41][42][43][44][45][46][47][48][49] Recently we have reported a series synthetic and theoretical studies based on the triphenylamine structure (TPA). [50][51][52][53][54][55][56][57][58][59][60][61][62] Five styryl triphenylamines or indoline derivatives have been synthesized, and the UV-vis spectrum of the styryl indoline derivative showed obvious red shift of 20 nm than the styryl triphenylamine, indicating a better electron-donating ability of the indoline ring. 63 In addition, a new type of DSSC dye with a donor-acceptor1-acceptor2 architecture using a styryl triphenylamine moiety as the donor and a triazine and an anthraquinone molecules as serial acceptors was designed and synthesized by our group, and a sequential electron transfers together with effective hole transfer and a charge separated state with lifetime of 650 ns in this D-A1-A2 dye were observed.…”

Section: Introductionmentioning

confidence: 99%

Tuning the HOMO Energy of the Triarylamine Molecules with Orthogonal HOMO and LUMO Using Functional Groups

Zhuang

Amaro

Testoff

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Tuning the HOMO and LUMO energy strategically of triphenylamine derivatives plays an important role towards understanding and design of high performance organic photovoltaics. To improve on the charge separation and electron transfer properties, twenty one D-pi-A organic dyes with nitrostyryl triphenylamine-based structures (NTPAs) were designed and computationally studied, in which triphenylamine, carbazole, or indoline structures were used as donor and NO2 group as acceptor. The LUMOs of these dyes are more localized at the nitrostyryl moiety with almost the same energy and the HOMOs, which are orthogonal to the LUMOs, can be conveniently tuned by changing the donor structure and using different functional groups substituted on the donor. Compared with triphenylamine molecules, carbazole molecules decrease the HOMO energy of NTPA, whereas cis N-phenylindoline structure increase the HOMO energy. In addition, the exciton sizes generated by these dyes are also tuned in a range of 7.0-12.7 A. These results show that introduction of dimethylamino group on the triphenylamine moiety greatly increases the HOMO energy and prolongs the maximum absorption wavelength as well as increases the exciton size, indicating that NTPA dyes containing strong electron donating dimethylamino group on the donor part are promising candidates as sensitizers in the dye-sensitized solar cell applications. The results of the structural and spectral properties show good correlation with the experimental results, which confirms that the DFT method employed in this work is an effective way to design organic small molecule based sensitizers.

show abstract

Photophysical tuning of small-molecule-doped organic crystals with long-persistent luminescence by variation of dopants

Cited by 12 publications

References 41 publications

Development and Implementation of a Two-Level Inquiry- and Project-Based Modular Approach to Teaching a Second-Semester Physical Chemistry Laboratory Course

Development and Implementation of a Two-Level Inquiry- and Project-Based Modular Approach to Teaching a Second-Semester Physical Chemistry Laboratory Course

Manipulation of Photo‐Active Ultralong Organic Phosphorescence in Host‐Guest System

Tuning the HOMO Energy of the Triarylamine Molecules with Orthogonal HOMO and LUMO Using Functional Groups

Contact Info

Product

Resources

About