Cascading electron transfer and photophysics in a donor-π-acceptor graphene nanoconjugate

Lulu Fu; Hui Li; Yan Fang; Zihao Guan; Zhiyuan Wei; Naying Shan; Fang Liu; Yang Zhao; Mingfei Zhang; Zhipeng Huang; Mark G. Humphrey; Chi Zhang

doi:10.1007/s12274-022-5167-8

Cascading electron transfer and photophysics in a donor-π-acceptor graphene nanoconjugate

Lulu Fu
, Hui Li
, Yan Fang
, Zihao Guan
, Zhiyuan Wei
, Naying Shan
, Fang Liu
, Yang Zhao
, Mingfei Zhang
, Zhipeng Huang
, Mark G. Humphrey
, Chi Zhang^*

^*Corresponding author for this work

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

11 Citations (Scopus)

Abstract

Electron-donating porphyrins (Por), electron-accepting phthalocyanines (Pcs), and reduced graphene oxide (RGO) were integrated into a multicomponent nanoconjugate (Por-RGO-Pc). The donor-π-acceptor nanoconjugate Por-RGO-Pc was characterized using Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic force microscopy (AFM), and ultraviolet—visible (UV—Vis) spectroscopy. Photoinduced cascading electron/charge transfer from Por to RGO and from RGO to Pc was established from fluorescence, electrochemical, and femtosecond transient absorption (fs-TA) spectroscopy studies. The increased distance between the electron donors and acceptors of the Por-RGO-Pc nanoconjugate compared to the parent materials and the intermediate RGO-Pc results in long-lived charge separation, and an enhancement in nonlinear optical (NLO) absorption (a large NLO coefficient of about 827.44 cm/GW) towards nanosecond laser irradiation at 532 nm. [Figure not available: see fulltext.]

Original language	English
Pages (from-to)	5909-5918
Number of pages	10
Journal	Nano Research
Volume	16
Issue number	4
DOIs	https://doi.org/10.1007/s12274-022-5167-8
Publication status	Published - 2023

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@article{2bc3d3daf9a645b5b9aa96c79360c234,

title = "Cascading electron transfer and photophysics in a donor-π-acceptor graphene nanoconjugate",

abstract = "Electron-donating porphyrins (Por), electron-accepting phthalocyanines (Pcs), and reduced graphene oxide (RGO) were integrated into a multicomponent nanoconjugate (Por-RGO-Pc). The donor-π-acceptor nanoconjugate Por-RGO-Pc was characterized using Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic force microscopy (AFM), and ultraviolet—visible (UV—Vis) spectroscopy. Photoinduced cascading electron/charge transfer from Por to RGO and from RGO to Pc was established from fluorescence, electrochemical, and femtosecond transient absorption (fs-TA) spectroscopy studies. The increased distance between the electron donors and acceptors of the Por-RGO-Pc nanoconjugate compared to the parent materials and the intermediate RGO-Pc results in long-lived charge separation, and an enhancement in nonlinear optical (NLO) absorption (a large NLO coefficient of about 827.44 cm/GW) towards nanosecond laser irradiation at 532 nm. [Figure not available: see fulltext.]",

keywords = "cascading charge separation, donor-π-acceptor (D-π-A), graphene, nanoconjugate, nonlinear optics",

author = "Lulu Fu and Hui Li and Yan Fang and Zihao Guan and Zhiyuan Wei and Naying Shan and Fang Liu and Yang Zhao and Mingfei Zhang and Zhipeng Huang and Humphrey, \{Mark G.\} and Chi Zhang",

note = "{\textcopyright} 2022 The Author(s)",

year = "2023",

doi = "10.1007/s12274-022-5167-8",

language = "English",

volume = "16",

pages = "5909--5918",

journal = "Nano Research",

issn = "1998-0124",

publisher = "Tsinghua University Press",

number = "4",

}

TY - JOUR

T1 - Cascading electron transfer and photophysics in a donor-π-acceptor graphene nanoconjugate

AU - Fu, Lulu

AU - Li, Hui

AU - Fang, Yan

AU - Guan, Zihao

AU - Wei, Zhiyuan

AU - Shan, Naying

AU - Liu, Fang

AU - Zhao, Yang

AU - Zhang, Mingfei

AU - Huang, Zhipeng

AU - Humphrey, Mark G.

AU - Zhang, Chi

PY - 2023

Y1 - 2023

N2 - Electron-donating porphyrins (Por), electron-accepting phthalocyanines (Pcs), and reduced graphene oxide (RGO) were integrated into a multicomponent nanoconjugate (Por-RGO-Pc). The donor-π-acceptor nanoconjugate Por-RGO-Pc was characterized using Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic force microscopy (AFM), and ultraviolet—visible (UV—Vis) spectroscopy. Photoinduced cascading electron/charge transfer from Por to RGO and from RGO to Pc was established from fluorescence, electrochemical, and femtosecond transient absorption (fs-TA) spectroscopy studies. The increased distance between the electron donors and acceptors of the Por-RGO-Pc nanoconjugate compared to the parent materials and the intermediate RGO-Pc results in long-lived charge separation, and an enhancement in nonlinear optical (NLO) absorption (a large NLO coefficient of about 827.44 cm/GW) towards nanosecond laser irradiation at 532 nm. [Figure not available: see fulltext.]

AB - Electron-donating porphyrins (Por), electron-accepting phthalocyanines (Pcs), and reduced graphene oxide (RGO) were integrated into a multicomponent nanoconjugate (Por-RGO-Pc). The donor-π-acceptor nanoconjugate Por-RGO-Pc was characterized using Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic force microscopy (AFM), and ultraviolet—visible (UV—Vis) spectroscopy. Photoinduced cascading electron/charge transfer from Por to RGO and from RGO to Pc was established from fluorescence, electrochemical, and femtosecond transient absorption (fs-TA) spectroscopy studies. The increased distance between the electron donors and acceptors of the Por-RGO-Pc nanoconjugate compared to the parent materials and the intermediate RGO-Pc results in long-lived charge separation, and an enhancement in nonlinear optical (NLO) absorption (a large NLO coefficient of about 827.44 cm/GW) towards nanosecond laser irradiation at 532 nm. [Figure not available: see fulltext.]

KW - cascading charge separation

KW - donor-π-acceptor (D-π-A)

KW - graphene

KW - nanoconjugate

KW - nonlinear optics

UR - https://www.scopus.com/pages/publications/85141173049

U2 - 10.1007/s12274-022-5167-8

DO - 10.1007/s12274-022-5167-8

M3 - Article

SN - 1998-0124

VL - 16

SP - 5909

EP - 5918

JO - Nano Research

JF - Nano Research

IS - 4

ER -

Cascading electron transfer and photophysics in a donor-π-acceptor graphene nanoconjugate

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